TY  - CONF
AU  - Đurović-Pejčev, Rada
AU  - Kaluđerović, Lazar
AU  - Šantrić, Ljiljana
AU  - Đorđević, Tijana
AU  - Radmanović, Svjetlana
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6686
AB  - Klomazon (IUPAC: 2-(2-hlorobenzil)-4,4-dimetil-1,2-oksazolidin-3-on) je selektivni
herbicid iz grupe izoksazolidinona, koji se na osnovu svojih fizičko-hemijskih karakteristika
može svrstati u grupu pesticida koji predstavljaju potencijalne kontaminante površinskih
voda, dubljih slojeva zemljišta i podzemnih voda.
Glina i organska materija, pre svega huminske kiseline (HA), su glavne sorbujuće
komponente zemljišta. Literaturni podaci ukazuju da u sorpciji klomazona u zemljištu
učestvuje ili organska materija [1-3]ili glina i organska materija [4,5]. S toga je cilj ovog
radabio ispitati potencijal HA i glina izdvojenih iz različitih tipova poljoprivrednog zemljišta
sa područja Republike Srbije (rendzina, černozem i smonica) u sorpciji klomazona, odnosno
odrediti njihov remedijacioni potencijal.
Za proučavanje sorpcionog ponašanja klomazona i određivanje njegovih sorpcionih
konstanti (Kd) za pomenute supstrate je korišćen batch metod [6], zasnovan na ravnotežnoj
raspodeli molekula klomazona u sistemu supstrat/vodena faza. U slučaju HA, sistem se
sastojao od smeše 25 mg supstratai 2,5 mL rastvora određene koncentracije (0,5 – 25
g/mL)klomazona u 0,01 M CaCl2, dok je u slučaju glina sistem sadržao 250 mg gline i 2
mL pomenutih rastvora. Svaka smeša je homogenizovana 24 h radi dostizanja ravnotežne
raspodele ovog jedinjenja između dve faze sistema. Nakon centrifugiranja, vodena faza je
analizirana HPLC-om opremljenim sa PDA detektorom, pri čemu su Kd koeficijenti
klomazona za proučavane supstrate računati kao odnos koncentracije pesticida koja je
sorbovana za supstrat (Cs) i koncentracije jedinjenja koja je zaostala u vodenoj fazi (Ce), u
uslovima ravnotežne raspodele. Adsorpcione izoterme su dobijene primenom Frojndlihove
jednačine na eksperimentalno dobijene rezultate, pri čemu su Frojndlihovi koeficijenti Kf i
n, dobijeni primenom linearne forme Frojdlihove jednačine.
Dobijeni rezultati ukazuju da je sorpcija klomazona mnogo veća za HA nego za gline,
i da opada u sledećem nizu: HA, rendzina (Kd=114,02 mL/g) >HA, smonica
(Kd=97,71 mL/g) >HA, černozem (Kd=91,24 mL/g)>> glina, smonica (Kd=2,29 mL/g)>
glina, černozem (Kd=2,16 mL/g)>glina, rendzina(Kd=1,61 mL/g).
Da je sorpcija klomazona za HA znatno veća nego za gline, ukazuju i vrednosti
Frojndlihovih Kf koeficijenata, koji za pomenute supstrate imaju sledeće vrednosti:
Kf=188,63 (HA, rendzina), Kf=170,61 (HA, smonica), Kf=167,19 (HA, černozem), Kf=1,80
(glina, černozem), Kf=1,10 (glina, rendzina) i Kf=0,98 (glina, smonica). Dobijene vrednosti
Frojndlihovih 1/n koeficijenata ukazuju da su izoterme dobijene za sve analizirane HA Ltpa (0,767, 0,698 i 0,708 za HA poreklom iz zemljišta tipa rendzina, černozem i smonica,
redom), što ukazuje na snažnu sorpciju molekula klomazona za sorpcione centre analiziranih
HA pri nižim koncentracijama pesticida, pri čemu ona opada kako koncentracija jedinjenja
raste. Sa druge strane, izoterme dobijene za gline poreklom iz rendzine i smonice (1/n=1,146
i 1,342, redom) su tzv. S-tipa, što ukazuje na slabiju adsorpciju klomazona za sorpcione
centre supstrata pri nižim koncentracijama pesticida u sistemu, nakon čega se sorpcija
pojačava, da bi pri većim količinama pesticida u sistemu, ona opet počela da se smanjuje
(postepena saturacija sorpcionih centara supstrata). Izoterma dobijena za glinu izdvojenu iz
zemljišta tipa černozem (1/n=1,074) je C-tipa i karakteriše je linearna zavisnost između
sorbovane količine klomazona i količine ovog pesticida koja zaostaje u rastvoru u sistemu
glina/voda.
Prikazani rezultati ukazuju da HA imaju dobar sorpcioni potencijal za klomazon,
odnosno da se mogu koristiti za remedijaciju zemljišta i različitih vodenih sistema
kontaminiranim klomazonom. Dodatne FTIR analize treba da pokažu koje funkcionalne
grupe HA i glina su odgovorne za vezivanje molekula klomazona i samim tim objasne
razlike u veličini sorpcije između različitih HA i glina poreklom iz različitih zemljišta.
PB  - Srpsko hemijsko društvo/Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection EnviroChem2023 with international participation, Kladovo, Serbia
T1  - Potencijal huminskih kiselina i glina u remedijaciji životne sredine kontaminirane klomazonom
T1  - Potential of humic acids and clays in the remediation of clomazonecontaminated environment
EP  - 72
EP  - 72
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6686
ER  - 

@conference{
author = "Đurović-Pejčev, Rada and Kaluđerović, Lazar and Šantrić, Ljiljana and Đorđević, Tijana and Radmanović, Svjetlana",
year = "2023",
abstract = "Klomazon (IUPAC: 2-(2-hlorobenzil)-4,4-dimetil-1,2-oksazolidin-3-on) je selektivni
herbicid iz grupe izoksazolidinona, koji se na osnovu svojih fizičko-hemijskih karakteristika
može svrstati u grupu pesticida koji predstavljaju potencijalne kontaminante površinskih
voda, dubljih slojeva zemljišta i podzemnih voda.
Glina i organska materija, pre svega huminske kiseline (HA), su glavne sorbujuće
komponente zemljišta. Literaturni podaci ukazuju da u sorpciji klomazona u zemljištu
učestvuje ili organska materija [1-3]ili glina i organska materija [4,5]. S toga je cilj ovog
radabio ispitati potencijal HA i glina izdvojenih iz različitih tipova poljoprivrednog zemljišta
sa područja Republike Srbije (rendzina, černozem i smonica) u sorpciji klomazona, odnosno
odrediti njihov remedijacioni potencijal.
Za proučavanje sorpcionog ponašanja klomazona i određivanje njegovih sorpcionih
konstanti (Kd) za pomenute supstrate je korišćen batch metod [6], zasnovan na ravnotežnoj
raspodeli molekula klomazona u sistemu supstrat/vodena faza. U slučaju HA, sistem se
sastojao od smeše 25 mg supstratai 2,5 mL rastvora određene koncentracije (0,5 – 25
g/mL)klomazona u 0,01 M CaCl2, dok je u slučaju glina sistem sadržao 250 mg gline i 2
mL pomenutih rastvora. Svaka smeša je homogenizovana 24 h radi dostizanja ravnotežne
raspodele ovog jedinjenja između dve faze sistema. Nakon centrifugiranja, vodena faza je
analizirana HPLC-om opremljenim sa PDA detektorom, pri čemu su Kd koeficijenti
klomazona za proučavane supstrate računati kao odnos koncentracije pesticida koja je
sorbovana za supstrat (Cs) i koncentracije jedinjenja koja je zaostala u vodenoj fazi (Ce), u
uslovima ravnotežne raspodele. Adsorpcione izoterme su dobijene primenom Frojndlihove
jednačine na eksperimentalno dobijene rezultate, pri čemu su Frojndlihovi koeficijenti Kf i
n, dobijeni primenom linearne forme Frojdlihove jednačine.
Dobijeni rezultati ukazuju da je sorpcija klomazona mnogo veća za HA nego za gline,
i da opada u sledećem nizu: HA, rendzina (Kd=114,02 mL/g) >HA, smonica
(Kd=97,71 mL/g) >HA, černozem (Kd=91,24 mL/g)>> glina, smonica (Kd=2,29 mL/g)>
glina, černozem (Kd=2,16 mL/g)>glina, rendzina(Kd=1,61 mL/g).
Da je sorpcija klomazona za HA znatno veća nego za gline, ukazuju i vrednosti
Frojndlihovih Kf koeficijenata, koji za pomenute supstrate imaju sledeće vrednosti:
Kf=188,63 (HA, rendzina), Kf=170,61 (HA, smonica), Kf=167,19 (HA, černozem), Kf=1,80
(glina, černozem), Kf=1,10 (glina, rendzina) i Kf=0,98 (glina, smonica). Dobijene vrednosti
Frojndlihovih 1/n koeficijenata ukazuju da su izoterme dobijene za sve analizirane HA Ltpa (0,767, 0,698 i 0,708 za HA poreklom iz zemljišta tipa rendzina, černozem i smonica,
redom), što ukazuje na snažnu sorpciju molekula klomazona za sorpcione centre analiziranih
HA pri nižim koncentracijama pesticida, pri čemu ona opada kako koncentracija jedinjenja
raste. Sa druge strane, izoterme dobijene za gline poreklom iz rendzine i smonice (1/n=1,146
i 1,342, redom) su tzv. S-tipa, što ukazuje na slabiju adsorpciju klomazona za sorpcione
centre supstrata pri nižim koncentracijama pesticida u sistemu, nakon čega se sorpcija
pojačava, da bi pri većim količinama pesticida u sistemu, ona opet počela da se smanjuje
(postepena saturacija sorpcionih centara supstrata). Izoterma dobijena za glinu izdvojenu iz
zemljišta tipa černozem (1/n=1,074) je C-tipa i karakteriše je linearna zavisnost između
sorbovane količine klomazona i količine ovog pesticida koja zaostaje u rastvoru u sistemu
glina/voda.
Prikazani rezultati ukazuju da HA imaju dobar sorpcioni potencijal za klomazon,
odnosno da se mogu koristiti za remedijaciju zemljišta i različitih vodenih sistema
kontaminiranim klomazonom. Dodatne FTIR analize treba da pokažu koje funkcionalne
grupe HA i glina su odgovorne za vezivanje molekula klomazona i samim tim objasne
razlike u veličini sorpcije između različitih HA i glina poreklom iz različitih zemljišta.",
publisher = "Srpsko hemijsko društvo/Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection EnviroChem2023 with international participation, Kladovo, Serbia",
title = "Potencijal huminskih kiselina i glina u remedijaciji životne sredine kontaminirane klomazonom, Potential of humic acids and clays in the remediation of clomazonecontaminated environment",
pages = "72-72-71",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6686"
}

Đurović-Pejčev, R., Kaluđerović, L., Šantrić, L., Đorđević, T.,& Radmanović, S.. (2023). Potencijal huminskih kiselina i glina u remedijaciji životne sredine kontaminirane klomazonom. in 9th Symposium Chemistry and Environmental Protection EnviroChem2023 with international participation, Kladovo, Serbia
Srpsko hemijsko društvo/Serbian Chemical Society., 71-72.
https://hdl.handle.net/21.15107/rcub_agrospace_6686

Đurović-Pejčev R, Kaluđerović L, Šantrić L, Đorđević T, Radmanović S. Potencijal huminskih kiselina i glina u remedijaciji životne sredine kontaminirane klomazonom. in 9th Symposium Chemistry and Environmental Protection EnviroChem2023 with international participation, Kladovo, Serbia. 2023;:71-72.
https://hdl.handle.net/21.15107/rcub_agrospace_6686 .

Đurović-Pejčev, Rada, Kaluđerović, Lazar, Šantrić, Ljiljana, Đorđević, Tijana, Radmanović, Svjetlana, "Potencijal huminskih kiselina i glina u remedijaciji životne sredine kontaminirane klomazonom" in 9th Symposium Chemistry and Environmental Protection EnviroChem2023 with international participation, Kladovo, Serbia (2023):71-72,
https://hdl.handle.net/21.15107/rcub_agrospace_6686 .

TY  - CONF
AU  - Čokeša, Đuro
AU  - Marković, Mirjana
AU  - Potkonjak, Nebojša
AU  - Kaluđerović, Branka
AU  - Radmanović, Svjetlana
AU  - Šerbula, Snežana
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6692
AB  - Arsenite–humic acid-binding process was investigated using the Isothermal Titration Calorimetry
(ITC). The ITC data were successfully (R2=0.996-0.936) interpreted by applying the MNIS model,
enabling thermodynamic parameters to be determined. The MNIS model was adjusted to the arsenite–
HA binding process assuming hydrogen bonding as the dominant type of interaction in the system.
Negative enthalpy change values indicated the arsenite–HAs binding as an exothermic process.
Negative ΔG values (-(27.85-26.83) kJ mol-1) pointed out to spontaneous binding reaction, leading to
the formation of the arsenite–HA complexes. High binding constants values ((7.57-5.02)105 M-1)
clearly demonstrated pronounced binding affinity. As ΔS values (0.041-0.027) kJ mol-1 K-1) were
apparently positive, but close to zero, and ΔH>ΔS, the reaction could be considered enthalpy driven.
Reaction heats and H values (-(18.96-15.64) kJ mol-1) confirmed hydrogen bonds as the most
ascendant interaction type in the arsenite–HA complex. Thermodynamic and reaction parameters
clearly indicated that arsenite–HA complexes are formed at common soil pH values, confirming the
possible influence of humic acids on increased As mobility, and its reduced bioavailability.
PB  - University of Belgrade, Technical Faculty in Bor
C3  - 29th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’22, Sokobanja, Serbia
T1  - ARSENITE–SOIL HUMIC ACID BINDING BY ISOTHERMAL TITRATION CALORIMETRY: THERMODYNAMICS AND MNIS MODEL
EP  - 126
SP  - 121
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6692
ER  - 

@conference{
author = "Čokeša, Đuro and Marković, Mirjana and Potkonjak, Nebojša and Kaluđerović, Branka and Radmanović, Svjetlana and Šerbula, Snežana",
year = "2023",
abstract = "Arsenite–humic acid-binding process was investigated using the Isothermal Titration Calorimetry
(ITC). The ITC data were successfully (R2=0.996-0.936) interpreted by applying the MNIS model,
enabling thermodynamic parameters to be determined. The MNIS model was adjusted to the arsenite–
HA binding process assuming hydrogen bonding as the dominant type of interaction in the system.
Negative enthalpy change values indicated the arsenite–HAs binding as an exothermic process.
Negative ΔG values (-(27.85-26.83) kJ mol-1) pointed out to spontaneous binding reaction, leading to
the formation of the arsenite–HA complexes. High binding constants values ((7.57-5.02)105 M-1)
clearly demonstrated pronounced binding affinity. As ΔS values (0.041-0.027) kJ mol-1 K-1) were
apparently positive, but close to zero, and ΔH>ΔS, the reaction could be considered enthalpy driven.
Reaction heats and H values (-(18.96-15.64) kJ mol-1) confirmed hydrogen bonds as the most
ascendant interaction type in the arsenite–HA complex. Thermodynamic and reaction parameters
clearly indicated that arsenite–HA complexes are formed at common soil pH values, confirming the
possible influence of humic acids on increased As mobility, and its reduced bioavailability.",
publisher = "University of Belgrade, Technical Faculty in Bor",
journal = "29th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’22, Sokobanja, Serbia",
title = "ARSENITE–SOIL HUMIC ACID BINDING BY ISOTHERMAL TITRATION CALORIMETRY: THERMODYNAMICS AND MNIS MODEL",
pages = "126-121",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6692"
}

Čokeša, Đ., Marković, M., Potkonjak, N., Kaluđerović, B., Radmanović, S.,& Šerbula, S.. (2023). ARSENITE–SOIL HUMIC ACID BINDING BY ISOTHERMAL TITRATION CALORIMETRY: THERMODYNAMICS AND MNIS MODEL. in 29th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’22, Sokobanja, Serbia
University of Belgrade, Technical Faculty in Bor., 121-126.
https://hdl.handle.net/21.15107/rcub_agrospace_6692

Čokeša Đ, Marković M, Potkonjak N, Kaluđerović B, Radmanović S, Šerbula S. ARSENITE–SOIL HUMIC ACID BINDING BY ISOTHERMAL TITRATION CALORIMETRY: THERMODYNAMICS AND MNIS MODEL. in 29th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’22, Sokobanja, Serbia. 2023;:121-126.
https://hdl.handle.net/21.15107/rcub_agrospace_6692 .

Čokeša, Đuro, Marković, Mirjana, Potkonjak, Nebojša, Kaluđerović, Branka, Radmanović, Svjetlana, Šerbula, Snežana, "ARSENITE–SOIL HUMIC ACID BINDING BY ISOTHERMAL TITRATION CALORIMETRY: THERMODYNAMICS AND MNIS MODEL" in 29th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’22, Sokobanja, Serbia (2023):121-126,
https://hdl.handle.net/21.15107/rcub_agrospace_6692 .

TY  - JOUR
AU  - Ðurović-Pejčev, Rada
AU  - Radmanović, Svjetlana
AU  - Tomić, Zorica P.
AU  - Kaluđerović, Lazar
AU  - Đorđević, Tijana
PY  - 2023
UR  - https://pubs.rsc.org/en/content/articlelanding/2023/em/d2em00272h
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6286
AB  - Kinetic studies are important for understanding the parameters and processes involved in the sorption of pesticides to soil. Considering the agricultural and environmental relevance of clomazone, its sorption kinetics was studied in four agricultural soils (Regosol, Planosol, Chernozem and Vertisol) at two concentrations (0.5 and 15 mg L−1). Different kinetic models were applied to the experimental data. The pseudo-second-order model described the data much better than the hyperbolic and pseudo-first-order models, and the kinetic rate constants indicated concentration-dependent clomazone sorption kinetics. The application of the two-site nonequilibrium model (TSNE) revealed a more time-dependent sorption of the lower clomazone concentration than that of the higher clomazone concentration, and the greatest concentration impact occurred in Regosol. Elovich and intraparticle diffusion models predicted more intensive sorption during the slower second phase and that sorption kinetics is governed more by mass transfer across the boundary layer than by a intraparticle diffusion process at higher clomazone concentration. Intraparticle diffusion is the rate-controlling process in Regosol at lower concentration, while this process and the boundary layer control the sorption kinetics in other soils. Significant correlations between some kinetic parameters and soil properties indicate an impact of the soil texture on the clomazone sorption mechanism, which must be considered in assessing the clomazone leaching behavior.
T2  - Environmental Science: Processes & Impacts
T2  - Environmental Science: Processes & ImpactsEnviron. Sci.: Processes Impacts
T1  - Characterization of the clomazone sorption process in four agricultural soils using different kinetic models
DO  - 10.1039/D2EM00272H
ER  - 

@article{
author = "Ðurović-Pejčev, Rada and Radmanović, Svjetlana and Tomić, Zorica P. and Kaluđerović, Lazar and Đorđević, Tijana",
year = "2023",
abstract = "Kinetic studies are important for understanding the parameters and processes involved in the sorption of pesticides to soil. Considering the agricultural and environmental relevance of clomazone, its sorption kinetics was studied in four agricultural soils (Regosol, Planosol, Chernozem and Vertisol) at two concentrations (0.5 and 15 mg L−1). Different kinetic models were applied to the experimental data. The pseudo-second-order model described the data much better than the hyperbolic and pseudo-first-order models, and the kinetic rate constants indicated concentration-dependent clomazone sorption kinetics. The application of the two-site nonequilibrium model (TSNE) revealed a more time-dependent sorption of the lower clomazone concentration than that of the higher clomazone concentration, and the greatest concentration impact occurred in Regosol. Elovich and intraparticle diffusion models predicted more intensive sorption during the slower second phase and that sorption kinetics is governed more by mass transfer across the boundary layer than by a intraparticle diffusion process at higher clomazone concentration. Intraparticle diffusion is the rate-controlling process in Regosol at lower concentration, while this process and the boundary layer control the sorption kinetics in other soils. Significant correlations between some kinetic parameters and soil properties indicate an impact of the soil texture on the clomazone sorption mechanism, which must be considered in assessing the clomazone leaching behavior.",
journal = "Environmental Science: Processes & Impacts, Environmental Science: Processes & ImpactsEnviron. Sci.: Processes Impacts",
title = "Characterization of the clomazone sorption process in four agricultural soils using different kinetic models",
doi = "10.1039/D2EM00272H"
}

Ðurović-Pejčev, R., Radmanović, S., Tomić, Z. P., Kaluđerović, L.,& Đorđević, T.. (2023). Characterization of the clomazone sorption process in four agricultural soils using different kinetic models. in Environmental Science: Processes & Impacts.
https://doi.org/10.1039/D2EM00272H

Ðurović-Pejčev R, Radmanović S, Tomić ZP, Kaluđerović L, Đorđević T. Characterization of the clomazone sorption process in four agricultural soils using different kinetic models. in Environmental Science: Processes & Impacts. 2023;.
doi:10.1039/D2EM00272H .

Ðurović-Pejčev, Rada, Radmanović, Svjetlana, Tomić, Zorica P., Kaluđerović, Lazar, Đorđević, Tijana, "Characterization of the clomazone sorption process in four agricultural soils using different kinetic models" in Environmental Science: Processes & Impacts (2023),
https://doi.org/10.1039/D2EM00272H . .

TY  - CONF
AU  - Aćić, Svetlana
AU  - Bogosavljević, Jelena
AU  - Radmanović, Svjetlana
AU  - Šilc, Urban
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6651
AB  - Understanding the relationships between soil features and grassland vegetation have significant importance for agriculture and nature conservation. The aim of this study was to analyse the soil physical and chemical characteristics influencing plant species composition and species richness of grassland vegetation developed on the consolidated limestone in eastern Serbia. The analyses have been carried out on 22 phytosociological relevés, corresponding mixed soil samples (0-10 cm depth) and 8 soil profiles. The collected soils samples were classified according to the World Reference Base for Soil Resources (2015). Numerical classification distinguished two grassland vegetation types: Balkan endemic steppe alliance Saturejion montanae and steppe fescue grasslands on deep calcareous soils, alliance Festucion valesiacae. The grasslands of both vegetation types are developed on Leptosols and Phaeozems. According to the results of the Detrended Correspondence Analysis, the most important soil parameters affecting the species composition of steppe grasslands were humus, soil exchange capacity, the content of calcium, total acidity, base saturation, altitude, soil depth and pH.
PB  - UNIVERSITA DI ROMA
C3  - 31st Conference of the European Vegetation Survey: European vegetation survey: methods and approaches in a changing environment, Rome, Italy, 21-25 May, 2023, 190
T1  - Vegetation-soil relationships on consolidated limestone of Serbia
EP  - 190
SP  - 190
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6651
ER  - 

@conference{
author = "Aćić, Svetlana and Bogosavljević, Jelena and Radmanović, Svjetlana and Šilc, Urban",
year = "2023",
abstract = "Understanding the relationships between soil features and grassland vegetation have significant importance for agriculture and nature conservation. The aim of this study was to analyse the soil physical and chemical characteristics influencing plant species composition and species richness of grassland vegetation developed on the consolidated limestone in eastern Serbia. The analyses have been carried out on 22 phytosociological relevés, corresponding mixed soil samples (0-10 cm depth) and 8 soil profiles. The collected soils samples were classified according to the World Reference Base for Soil Resources (2015). Numerical classification distinguished two grassland vegetation types: Balkan endemic steppe alliance Saturejion montanae and steppe fescue grasslands on deep calcareous soils, alliance Festucion valesiacae. The grasslands of both vegetation types are developed on Leptosols and Phaeozems. According to the results of the Detrended Correspondence Analysis, the most important soil parameters affecting the species composition of steppe grasslands were humus, soil exchange capacity, the content of calcium, total acidity, base saturation, altitude, soil depth and pH.",
publisher = "UNIVERSITA DI ROMA",
journal = "31st Conference of the European Vegetation Survey: European vegetation survey: methods and approaches in a changing environment, Rome, Italy, 21-25 May, 2023, 190",
title = "Vegetation-soil relationships on consolidated limestone of Serbia",
pages = "190-190",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6651"
}

Aćić, S., Bogosavljević, J., Radmanović, S.,& Šilc, U.. (2023). Vegetation-soil relationships on consolidated limestone of Serbia. in 31st Conference of the European Vegetation Survey: European vegetation survey: methods and approaches in a changing environment, Rome, Italy, 21-25 May, 2023, 190
UNIVERSITA DI ROMA., 190-190.
https://hdl.handle.net/21.15107/rcub_agrospace_6651

Aćić S, Bogosavljević J, Radmanović S, Šilc U. Vegetation-soil relationships on consolidated limestone of Serbia. in 31st Conference of the European Vegetation Survey: European vegetation survey: methods and approaches in a changing environment, Rome, Italy, 21-25 May, 2023, 190. 2023;:190-190.
https://hdl.handle.net/21.15107/rcub_agrospace_6651 .

Aćić, Svetlana, Bogosavljević, Jelena, Radmanović, Svjetlana, Šilc, Urban, "Vegetation-soil relationships on consolidated limestone of Serbia" in 31st Conference of the European Vegetation Survey: European vegetation survey: methods and approaches in a changing environment, Rome, Italy, 21-25 May, 2023, 190 (2023):190-190,
https://hdl.handle.net/21.15107/rcub_agrospace_6651 .

TY  - CONF
AU  - Marković, Mirjana
AU  - Radmanović, Svjetlana
AU  - Čokeša, Đuro
AU  - Potkonjak, Nebojša
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6690
AB  - Humic acids, belonging to the humic substances, are the most reactive organic compounds in water, soil and sediments. They are known for their role in processes related to soil structure, biology, and chemistry, as well as for their effects on the behavior of environmental pollutants. The effects of humic acids on the environment are strongly influenced by their composition and structure. Humic acids are
used in various fields, especially in agriculture, environmental remediation and medicine. Agricultural
fertilizers containing humic acids as additives are often used to improve plant growth and soil fertility.
The content of heavy metals, metalloids, radionuclides and various organic pollutants can be reduced
by adsorption, complexation, and redox processes involving humic acids. Owing to the ability of
humic acids to form composites with inorganic and organic oxides, pollutants are adsorbed and
removed from water. In addition, the composites formed exhibit pronounced antibacterial activity in
water. Various organic pollutants such as pesticides, microplastics and antibiotics can also be
removed from soil and water by adsorption on the composites or humic acids. Various viruses with
positively charged glycoproteins can be bound by the negatively charged humic acids, defining them
as antivirally active. Currently, the humic acids are isolated from various matrices such as coals, peat
and organic wastes. Due to the increasing requirements for the commercial applications of humic
acids, their production and utilization are significantly important and trendy tasks. The humic acid
production with the higher yield is the focus of research today.
PB  - University of Belgrade, Technical Faculty in Bor
C3  - 30th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’23, Serbia
T1  - HUMIC ACIDS IN THE ENVIRONMENT
EP  - 39
SP  - 30
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6690
ER  - 

@conference{
author = "Marković, Mirjana and Radmanović, Svjetlana and Čokeša, Đuro and Potkonjak, Nebojša",
year = "2023",
abstract = "Humic acids, belonging to the humic substances, are the most reactive organic compounds in water, soil and sediments. They are known for their role in processes related to soil structure, biology, and chemistry, as well as for their effects on the behavior of environmental pollutants. The effects of humic acids on the environment are strongly influenced by their composition and structure. Humic acids are
used in various fields, especially in agriculture, environmental remediation and medicine. Agricultural
fertilizers containing humic acids as additives are often used to improve plant growth and soil fertility.
The content of heavy metals, metalloids, radionuclides and various organic pollutants can be reduced
by adsorption, complexation, and redox processes involving humic acids. Owing to the ability of
humic acids to form composites with inorganic and organic oxides, pollutants are adsorbed and
removed from water. In addition, the composites formed exhibit pronounced antibacterial activity in
water. Various organic pollutants such as pesticides, microplastics and antibiotics can also be
removed from soil and water by adsorption on the composites or humic acids. Various viruses with
positively charged glycoproteins can be bound by the negatively charged humic acids, defining them
as antivirally active. Currently, the humic acids are isolated from various matrices such as coals, peat
and organic wastes. Due to the increasing requirements for the commercial applications of humic
acids, their production and utilization are significantly important and trendy tasks. The humic acid
production with the higher yield is the focus of research today.",
publisher = "University of Belgrade, Technical Faculty in Bor",
journal = "30th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’23, Serbia",
title = "HUMIC ACIDS IN THE ENVIRONMENT",
pages = "39-30",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6690"
}

Marković, M., Radmanović, S., Čokeša, Đ.,& Potkonjak, N.. (2023). HUMIC ACIDS IN THE ENVIRONMENT. in 30th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’23, Serbia
University of Belgrade, Technical Faculty in Bor., 30-39.
https://hdl.handle.net/21.15107/rcub_agrospace_6690

Marković M, Radmanović S, Čokeša Đ, Potkonjak N. HUMIC ACIDS IN THE ENVIRONMENT. in 30th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’23, Serbia. 2023;:30-39.
https://hdl.handle.net/21.15107/rcub_agrospace_6690 .

Marković, Mirjana, Radmanović, Svjetlana, Čokeša, Đuro, Potkonjak, Nebojša, "HUMIC ACIDS IN THE ENVIRONMENT" in 30th INTERNATIONAL CONFERENCE ECOLOGICAL TRUTH AND ENVIRONMENTAL RESEARCH – EcoTER’23, Serbia (2023):30-39,
https://hdl.handle.net/21.15107/rcub_agrospace_6690 .

TY  - CONF
AU  - Bogosavljević, Jelena
AU  - Nikolić, Nataša
AU  - Radmanović, Svjetlana
AU  - Branković, Snežana
AU  - Kaluđerović, Lazar
AU  - Đorđević, Aleksandar
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6575
AB  - UVOD i CILjEVI: Sadržaja organske materije (OM) u zemljištu je bitan faktor pri odabiru
loznih podloga i sorti vinove loze pošto značajno utiče na vegetativni porast i prinos, koji su u
proizvodnji vina kontrolisani, tako da je važno precizno odrediti sadržaj OM pri podizanju i
eksploataciji zasada vinove loze. Cilj ovog istraživanja jeste precizno i prostorno predstavljanje
sadržaja OM u rendzinama na području Krnjevačkog vinogorja. Rendzina je jedno od najpogodnijih
vinogradarskih zemljišta kod nas. Prema zvaničnom sistemu klasifikacije zemljišta Srbije,
rendzina je tip zemljišta sa A – AC – C – R profilom, razvijen na matičnoj steni koja sadrži
više od 20% krečnjačkog materijala (osim zemljišta sa A – R profilom na tvrdom čistom
krečnjaku ili dolomitu). U Svetskoj referentnoj bazi za zemljišne resurse (WRB) rendzine
odgovaraju uglavnom renzičnim leptosolima (Rendzic Leptosols) ili faozemima (Phaeozems).
MATERIJAL i METOD: Krnjevačko vinogorje je deo Šumadijskog vinogradarskog rejona, nalazi
se na brežuljkastim padinama i kosama zapadno od Velike Morave, a severno od Smederevske
Palanke i Velike Plane, prostire se na površini od 11188,22 ha. Istraživanje je sprovedeno u
vinogradu Podruma Radovanović (44°25ʹ57,60ʺ SGŠ; 21°02ʹ40,34ʺ IGD i 44°25ʹ 41,33ʺ SGŠ;
21°02ʹ51,29ʺ IGD), na pet parcela zasađenih različitim sortama vinove loze gde je otvoreno i
opisano 15 pedoloških profila. Uzorci u narušenom stanju su uzeti iz svih genetskih horizonata
od površine do matične stene. Sadržaj organskog ugljenika (OC) određen je dihromatnom metodom
u 54 uzorka zemljišta, a sadržaj OM je proračunat prema formuli OM = OC x 1,72. Prostorni
prikaz sadržaja OM u ispitivanim zemljištima urađen je korišćenjem programa ArcGis 10.0.
REZULTATI i ZAKLjUČCI: Na ispitivanom lokalitetu identifikovana su tri varijeteta
rendzine: karbonatana rendzina, rendzina u ogajnjačavanju i izlužena rendzina. Sadržaj OM u
humusnom horizontu rendzina varirao je u opsegu od 1,18% do 4,17%, sa prosečno vrednošću od
2,55 ± 0,56%. Zemljišta ispitivanog područja su slabo i srednje humusna, što je povoljno s
obzirom na to da se najbolji vinogradraski i vinarski rezultati dobijaju na srednje plodnim
zemljištima koja imaju neka pedološka ograničenja. Idealno vinogradarsko zemljište sadrži 2–
4% OM. Sadržaj OM se pravilno smanjivao po dubini profila, tako da je u C horizontu iznosio od
0,67% do 1,04%, a prosečna vrednost je bila 0,97 ± 0,21%. Relativno visok sadržaj OM u C
horizontu je posledica dubokog prodiranja korenovog sistema vinove loze. Na tematskoj karti koja
prostorno prikazuje sadržaj OM u površinskom horizontu može se uočiti da je najviši sadržaj
OM u zoni gde se vinograd graniči sa šumom, što dovodi do zaključka da je u ovom delu izraženije
nakupljanje OM (u odnosu na preostalu ispitivanu površinu), verovatno kao posledica prirodnog
unošenja organskih ostataka šumske vegetacije. Na osnovu rezultat studije može se zaključiti da
su ispitivana zemljišta prema sadržaju OM pogodna za uzgoj vinove loze. Prostorni prikaz
sadržaja OM omogućava izdvajanje određenih površina za dalje analize kvaliteta grožđa i vina.
PB  - Poljoprivredni fakultet Novi Sad
C3  - Simpozijum ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022''
T1  - Prostorni prikaz sadržaja organske materije u rendzinama Krnjevačkog Vinogorja, Srbija.
EP  - 27
SP  - 26
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6575
ER  - 

@conference{
author = "Bogosavljević, Jelena and Nikolić, Nataša and Radmanović, Svjetlana and Branković, Snežana and Kaluđerović, Lazar and Đorđević, Aleksandar",
year = "2022",
abstract = "UVOD i CILjEVI: Sadržaja organske materije (OM) u zemljištu je bitan faktor pri odabiru
loznih podloga i sorti vinove loze pošto značajno utiče na vegetativni porast i prinos, koji su u
proizvodnji vina kontrolisani, tako da je važno precizno odrediti sadržaj OM pri podizanju i
eksploataciji zasada vinove loze. Cilj ovog istraživanja jeste precizno i prostorno predstavljanje
sadržaja OM u rendzinama na području Krnjevačkog vinogorja. Rendzina je jedno od najpogodnijih
vinogradarskih zemljišta kod nas. Prema zvaničnom sistemu klasifikacije zemljišta Srbije,
rendzina je tip zemljišta sa A – AC – C – R profilom, razvijen na matičnoj steni koja sadrži
više od 20% krečnjačkog materijala (osim zemljišta sa A – R profilom na tvrdom čistom
krečnjaku ili dolomitu). U Svetskoj referentnoj bazi za zemljišne resurse (WRB) rendzine
odgovaraju uglavnom renzičnim leptosolima (Rendzic Leptosols) ili faozemima (Phaeozems).
MATERIJAL i METOD: Krnjevačko vinogorje je deo Šumadijskog vinogradarskog rejona, nalazi
se na brežuljkastim padinama i kosama zapadno od Velike Morave, a severno od Smederevske
Palanke i Velike Plane, prostire se na površini od 11188,22 ha. Istraživanje je sprovedeno u
vinogradu Podruma Radovanović (44°25ʹ57,60ʺ SGŠ; 21°02ʹ40,34ʺ IGD i 44°25ʹ 41,33ʺ SGŠ;
21°02ʹ51,29ʺ IGD), na pet parcela zasađenih različitim sortama vinove loze gde je otvoreno i
opisano 15 pedoloških profila. Uzorci u narušenom stanju su uzeti iz svih genetskih horizonata
od površine do matične stene. Sadržaj organskog ugljenika (OC) određen je dihromatnom metodom
u 54 uzorka zemljišta, a sadržaj OM je proračunat prema formuli OM = OC x 1,72. Prostorni
prikaz sadržaja OM u ispitivanim zemljištima urađen je korišćenjem programa ArcGis 10.0.
REZULTATI i ZAKLjUČCI: Na ispitivanom lokalitetu identifikovana su tri varijeteta
rendzine: karbonatana rendzina, rendzina u ogajnjačavanju i izlužena rendzina. Sadržaj OM u
humusnom horizontu rendzina varirao je u opsegu od 1,18% do 4,17%, sa prosečno vrednošću od
2,55 ± 0,56%. Zemljišta ispitivanog područja su slabo i srednje humusna, što je povoljno s
obzirom na to da se najbolji vinogradraski i vinarski rezultati dobijaju na srednje plodnim
zemljištima koja imaju neka pedološka ograničenja. Idealno vinogradarsko zemljište sadrži 2–
4% OM. Sadržaj OM se pravilno smanjivao po dubini profila, tako da je u C horizontu iznosio od
0,67% do 1,04%, a prosečna vrednost je bila 0,97 ± 0,21%. Relativno visok sadržaj OM u C
horizontu je posledica dubokog prodiranja korenovog sistema vinove loze. Na tematskoj karti koja
prostorno prikazuje sadržaj OM u površinskom horizontu može se uočiti da je najviši sadržaj
OM u zoni gde se vinograd graniči sa šumom, što dovodi do zaključka da je u ovom delu izraženije
nakupljanje OM (u odnosu na preostalu ispitivanu površinu), verovatno kao posledica prirodnog
unošenja organskih ostataka šumske vegetacije. Na osnovu rezultat studije može se zaključiti da
su ispitivana zemljišta prema sadržaju OM pogodna za uzgoj vinove loze. Prostorni prikaz
sadržaja OM omogućava izdvajanje određenih površina za dalje analize kvaliteta grožđa i vina.",
publisher = "Poljoprivredni fakultet Novi Sad",
journal = "Simpozijum ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022''",
title = "Prostorni prikaz sadržaja organske materije u rendzinama Krnjevačkog Vinogorja, Srbija.",
pages = "27-26",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6575"
}

Bogosavljević, J., Nikolić, N., Radmanović, S., Branković, S., Kaluđerović, L.,& Đorđević, A.. (2022). Prostorni prikaz sadržaja organske materije u rendzinama Krnjevačkog Vinogorja, Srbija.. in Simpozijum ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022''
Poljoprivredni fakultet Novi Sad., 26-27.
https://hdl.handle.net/21.15107/rcub_agrospace_6575

Bogosavljević J, Nikolić N, Radmanović S, Branković S, Kaluđerović L, Đorđević A. Prostorni prikaz sadržaja organske materije u rendzinama Krnjevačkog Vinogorja, Srbija.. in Simpozijum ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022''. 2022;:26-27.
https://hdl.handle.net/21.15107/rcub_agrospace_6575 .

Bogosavljević, Jelena, Nikolić, Nataša, Radmanović, Svjetlana, Branković, Snežana, Kaluđerović, Lazar, Đorđević, Aleksandar, "Prostorni prikaz sadržaja organske materije u rendzinama Krnjevačkog Vinogorja, Srbija." in Simpozijum ''Zemljište u doba precizne poljoprivrede i informacionih tehnologija – Soil AgroIT 2022'' (2022):26-27,
https://hdl.handle.net/21.15107/rcub_agrospace_6575 .

TY  - JOUR
AU  - Dugonjić, Mladen
AU  - Đorđević, Aleksandar
AU  - Golubović, Slađana
AU  - Radmanović, Svjetlana
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6776
AB  - The impact of various types of uses of Pseudogley soils in southern Mačva and Pocerina on
theiraggregate distributionand stability was studied on soil samples collected from profiles under
forest, meadow and arable land, at three localities. The aggregate composition and stability were
determined by Savinov’smethod. The soil structure was assessed by using Revut’s coefficient of soil
structure (Ks) and Vershinin’s coefficient of soil aggregate structure (KA). The results show that the
studied Pseudogley soils are characterized by an unfavorable structure, while the type of land use has
a significant impact on the aggregate composition and stability, especially in surface Ah and Ahp
horizons, where these differences are the most pronounced. The most favorable aggregate
composition and highest wet-stability are found in Pseudogley profiles under forest vegetation. The
aggregate distribution of meadow profiles was intermediate and of arable land the poorest. Statistical
analysis of the collected data shows that Ks values, determined by dry sieving, were the highest in
forest profiles (2.261.21 on average), while the values for meadow were 1.591.09 and of arable
land 1.140.62. The values of KA, used to assess the aggregate stability to water, also show that forest
Pseudogleys have the highest average values (2.051.03), followed by meadow (1.96 0.99) and
cultivated soils (1.931.22). The results of correlation analysis indicate that Ks is negatively
correlated with clay, pH value and base saturation, but positively correlated with soil humus (r=-0.77,
-0.70, -0.81 and 0.79, respectively, p<0.01). Conversely, KA is negatively correlated with humus and
positively correlated with clay, pH value and base saturation (r=-0.21, 0.82, 0.69 and 0.69,
respectively, p<0.01).
PB  - Srpsko društvo za proučavanje zemljišta
T2  - ZEMLJIŠTE I BILJKA
T1  - Land use impact on soil structure of Pseudogleys in southern Mačva and Pocerina, Serbia
EP  - 14
IS  - 1
SP  - 1
VL  - 71
DO  - 10.5937/ZemBilj2201001D
ER  - 

@article{
author = "Dugonjić, Mladen and Đorđević, Aleksandar and Golubović, Slađana and Radmanović, Svjetlana",
year = "2022",
abstract = "The impact of various types of uses of Pseudogley soils in southern Mačva and Pocerina on
theiraggregate distributionand stability was studied on soil samples collected from profiles under
forest, meadow and arable land, at three localities. The aggregate composition and stability were
determined by Savinov’smethod. The soil structure was assessed by using Revut’s coefficient of soil
structure (Ks) and Vershinin’s coefficient of soil aggregate structure (KA). The results show that the
studied Pseudogley soils are characterized by an unfavorable structure, while the type of land use has
a significant impact on the aggregate composition and stability, especially in surface Ah and Ahp
horizons, where these differences are the most pronounced. The most favorable aggregate
composition and highest wet-stability are found in Pseudogley profiles under forest vegetation. The
aggregate distribution of meadow profiles was intermediate and of arable land the poorest. Statistical
analysis of the collected data shows that Ks values, determined by dry sieving, were the highest in
forest profiles (2.261.21 on average), while the values for meadow were 1.591.09 and of arable
land 1.140.62. The values of KA, used to assess the aggregate stability to water, also show that forest
Pseudogleys have the highest average values (2.051.03), followed by meadow (1.96 0.99) and
cultivated soils (1.931.22). The results of correlation analysis indicate that Ks is negatively
correlated with clay, pH value and base saturation, but positively correlated with soil humus (r=-0.77,
-0.70, -0.81 and 0.79, respectively, p<0.01). Conversely, KA is negatively correlated with humus and
positively correlated with clay, pH value and base saturation (r=-0.21, 0.82, 0.69 and 0.69,
respectively, p<0.01).",
publisher = "Srpsko društvo za proučavanje zemljišta",
journal = "ZEMLJIŠTE I BILJKA",
title = "Land use impact on soil structure of Pseudogleys in southern Mačva and Pocerina, Serbia",
pages = "14-1",
number = "1",
volume = "71",
doi = "10.5937/ZemBilj2201001D"
}

Dugonjić, M., Đorđević, A., Golubović, S.,& Radmanović, S.. (2022). Land use impact on soil structure of Pseudogleys in southern Mačva and Pocerina, Serbia. in ZEMLJIŠTE I BILJKA
Srpsko društvo za proučavanje zemljišta., 71(1), 1-14.
https://doi.org/10.5937/ZemBilj2201001D

Dugonjić M, Đorđević A, Golubović S, Radmanović S. Land use impact on soil structure of Pseudogleys in southern Mačva and Pocerina, Serbia. in ZEMLJIŠTE I BILJKA. 2022;71(1):1-14.
doi:10.5937/ZemBilj2201001D .

Dugonjić, Mladen, Đorđević, Aleksandar, Golubović, Slađana, Radmanović, Svjetlana, "Land use impact on soil structure of Pseudogleys in southern Mačva and Pocerina, Serbia" in ZEMLJIŠTE I BILJKA, 71, no. 1 (2022):1-14,
https://doi.org/10.5937/ZemBilj2201001D . .

TY  - CONF
AU  - Bogosavljević, Jelena
AU  - Radmanović, Svjetlana
AU  - Životić, Ljubomir
AU  - Kaluđerović, Lazar
AU  - Đorđević, Aleksandar
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6503
AB  - Soil structure pertains to the natural organization of soil particles into various forms as a result of pedogenic processes. On one hand, it is formed in interaction of physical, chemical, mineralogical, and biological factors, whereas on the other hand it affects them. Soil structure can differ in grade of development, size and type of aggregates, and their stability to mechanical pressure and water, which is often soil-horizon or soil-type dependent. This paper aims to analyze the structure of Calcomelanosols of mountain Rtanj, Serbia, as that is the most widespread soil type in this area. Calcomelanosols are soils from the national classification system that often correspond to Rendzic Leptosols in the World Reference Base (WRB) for soil resources. Soil structure is analyzed in terms of soil dry aggregate size distribution (ASD) and soil aggregate stability to water (WAS), and related soil structure indices, as they are essential parameters in understanding the structural state of the soil. Eight soil profiles have been excavated, described and sampled in the field. Soil horizon sequence of all profiles was A – R, with humus-accumulative horizon overlying calcareous bedrock. Six profiles of Calcomelanosols correspond to Rendzic Leptosols of WRB, whereas other two profiles correspond to Leptic Rendzic Phaeozems and Leptic Chernic Rendzic Phaeozems. Basic physical and chemical soil properties were determined. Both ASD and WAS were determined by Savinov's method. The following soil structure indices were calculated: dry mean weight diameter (dMWD), wet mean weight diameter (wMWD), dry geometric mean diameter (dGMD), wet geometric mean diameter (wGMD) and structural stability index (SI). The results indicate favorable structure of the examined Calcomelanosols. The content of agronomically most valuable aggregates (0.25–10 mm) in all soil profiles exceeds 80% (90.5±3.6% on average). Among these aggregates, very fine, fine and medium size aggregates dominate. Dry MWD showed values ranging from 3.0–5.5 mm, whereas wMWD ranges from 1.9– 3.3 mm. The wMWD and dMWD ratio is an indicator of the stability of structural aggregates. A small change in the aggregate size after wet sieving was found, 0.7±0.1 mm on average. In all examined soil profiles SI is higher than 19% (32.9±7.1% on average), which indicates an extremely stable structure, without risk of the structural degradation of soil. Correlation analysis showed a significant positive relationship between the content of agronomically valuable fractions (0.25–10 mm) and the following soil parameters: soil organic matter (SOM), pH, and base saturation (%V). Also, there is a strong positive correlation between SI and pH, and SI with %V. Other calculated structural indices show a strong negative correlation with SOM, pH and %V. All analyzed soil profiles have favorable soil structure and water stable soil aggregates with low risk of soil structure degradation. This is of extreme importance because Calcomelanosols cover the steep and
sloping land which is naturally more prone to soil water erosion and soil degradation.
PB  - Serbian Society of Soil Science
C3  - 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia, 21-24 September 2021
T1  - Soil Structure of Calcomelanosols from the Rtanj Mountain, Serbia
EP  - 165
SP  - 154
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6503
ER  - 

@conference{
author = "Bogosavljević, Jelena and Radmanović, Svjetlana and Životić, Ljubomir and Kaluđerović, Lazar and Đorđević, Aleksandar",
year = "2022",
abstract = "Soil structure pertains to the natural organization of soil particles into various forms as a result of pedogenic processes. On one hand, it is formed in interaction of physical, chemical, mineralogical, and biological factors, whereas on the other hand it affects them. Soil structure can differ in grade of development, size and type of aggregates, and their stability to mechanical pressure and water, which is often soil-horizon or soil-type dependent. This paper aims to analyze the structure of Calcomelanosols of mountain Rtanj, Serbia, as that is the most widespread soil type in this area. Calcomelanosols are soils from the national classification system that often correspond to Rendzic Leptosols in the World Reference Base (WRB) for soil resources. Soil structure is analyzed in terms of soil dry aggregate size distribution (ASD) and soil aggregate stability to water (WAS), and related soil structure indices, as they are essential parameters in understanding the structural state of the soil. Eight soil profiles have been excavated, described and sampled in the field. Soil horizon sequence of all profiles was A – R, with humus-accumulative horizon overlying calcareous bedrock. Six profiles of Calcomelanosols correspond to Rendzic Leptosols of WRB, whereas other two profiles correspond to Leptic Rendzic Phaeozems and Leptic Chernic Rendzic Phaeozems. Basic physical and chemical soil properties were determined. Both ASD and WAS were determined by Savinov's method. The following soil structure indices were calculated: dry mean weight diameter (dMWD), wet mean weight diameter (wMWD), dry geometric mean diameter (dGMD), wet geometric mean diameter (wGMD) and structural stability index (SI). The results indicate favorable structure of the examined Calcomelanosols. The content of agronomically most valuable aggregates (0.25–10 mm) in all soil profiles exceeds 80% (90.5±3.6% on average). Among these aggregates, very fine, fine and medium size aggregates dominate. Dry MWD showed values ranging from 3.0–5.5 mm, whereas wMWD ranges from 1.9– 3.3 mm. The wMWD and dMWD ratio is an indicator of the stability of structural aggregates. A small change in the aggregate size after wet sieving was found, 0.7±0.1 mm on average. In all examined soil profiles SI is higher than 19% (32.9±7.1% on average), which indicates an extremely stable structure, without risk of the structural degradation of soil. Correlation analysis showed a significant positive relationship between the content of agronomically valuable fractions (0.25–10 mm) and the following soil parameters: soil organic matter (SOM), pH, and base saturation (%V). Also, there is a strong positive correlation between SI and pH, and SI with %V. Other calculated structural indices show a strong negative correlation with SOM, pH and %V. All analyzed soil profiles have favorable soil structure and water stable soil aggregates with low risk of soil structure degradation. This is of extreme importance because Calcomelanosols cover the steep and
sloping land which is naturally more prone to soil water erosion and soil degradation.",
publisher = "Serbian Society of Soil Science",
journal = "3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia, 21-24 September 2021",
title = "Soil Structure of Calcomelanosols from the Rtanj Mountain, Serbia",
pages = "165-154",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6503"
}

Bogosavljević, J., Radmanović, S., Životić, L., Kaluđerović, L.,& Đorđević, A.. (2022). Soil Structure of Calcomelanosols from the Rtanj Mountain, Serbia. in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia, 21-24 September 2021
Serbian Society of Soil Science., 154-165.
https://hdl.handle.net/21.15107/rcub_agrospace_6503

Bogosavljević J, Radmanović S, Životić L, Kaluđerović L, Đorđević A. Soil Structure of Calcomelanosols from the Rtanj Mountain, Serbia. in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia, 21-24 September 2021. 2022;:154-165.
https://hdl.handle.net/21.15107/rcub_agrospace_6503 .

Bogosavljević, Jelena, Radmanović, Svjetlana, Životić, Ljubomir, Kaluđerović, Lazar, Đorđević, Aleksandar, "Soil Structure of Calcomelanosols from the Rtanj Mountain, Serbia" in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia, 21-24 September 2021 (2022):154-165,
https://hdl.handle.net/21.15107/rcub_agrospace_6503 .

TY  - JOUR
AU  - Jovanović, Uroš D.
AU  - Marković, Mirjana M.
AU  - Čokeša, Đuro M.
AU  - Živković, Nikola V.
AU  - Radmanović, Svjetlana B.
PY  - 2022
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0352-51392200010J
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6139
AB  - The main goal of this work was to estimate the influence of carboxyl and phenolic groups, as well as aromatic, aliphatic and polysaccharide components, on the soil humic acids (HA) self-aggregation process. Soil HAs (leptosol and regosol) were separated using base resin getting fractions with different functional group contents. Blocking of carboxyl groups was performed using the esterification procedure to estimate the participation of each functional group in the HA aggregation. The presence of HA structural components was evaluated by potentiometric titration and ATR-FTIR. The aggregation was monitored at pH 3 using dynamic light scattering. Results indicated that the higher group content, the HA aggregation is less pronounced. A significant positive correlation of aliphatic C and aggregate size revealed their dominant influence in the HA self-aggregation. A lower abundance of aliphatic C in HA fractions could be considered as not sufficient to start the process. An increase of aromatic C in esters likely pointed out to its participation in hydrophobic bonding and, consequently, more pronounced aggregation. The relation of HA self-aggregate size with carboxyl and phenolic group, as well as aliphatic C, at low pH, could be considered universal regardless of the structural characteristics of the original or modified HA forms.
T2  - Journal of the Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Self-aggregation of soil humic acids with respect to their structural characteristics
EP  - 773
IS  - 6
SP  - 761
VL  - 87
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6139
ER  - 

@article{
author = "Jovanović, Uroš D. and Marković, Mirjana M. and Čokeša, Đuro M. and Živković, Nikola V. and Radmanović, Svjetlana B.",
year = "2022",
abstract = "The main goal of this work was to estimate the influence of carboxyl and phenolic groups, as well as aromatic, aliphatic and polysaccharide components, on the soil humic acids (HA) self-aggregation process. Soil HAs (leptosol and regosol) were separated using base resin getting fractions with different functional group contents. Blocking of carboxyl groups was performed using the esterification procedure to estimate the participation of each functional group in the HA aggregation. The presence of HA structural components was evaluated by potentiometric titration and ATR-FTIR. The aggregation was monitored at pH 3 using dynamic light scattering. Results indicated that the higher group content, the HA aggregation is less pronounced. A significant positive correlation of aliphatic C and aggregate size revealed their dominant influence in the HA self-aggregation. A lower abundance of aliphatic C in HA fractions could be considered as not sufficient to start the process. An increase of aromatic C in esters likely pointed out to its participation in hydrophobic bonding and, consequently, more pronounced aggregation. The relation of HA self-aggregate size with carboxyl and phenolic group, as well as aliphatic C, at low pH, could be considered universal regardless of the structural characteristics of the original or modified HA forms.",
journal = "Journal of the Serbian Chemical Society, Journal of the Serbian Chemical Society",
title = "Self-aggregation of soil humic acids with respect to their structural characteristics",
pages = "773-761",
number = "6",
volume = "87",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6139"
}

Jovanović, U. D., Marković, M. M., Čokeša, Đ. M., Živković, N. V.,& Radmanović, S. B.. (2022). Self-aggregation of soil humic acids with respect to their structural characteristics. in Journal of the Serbian Chemical Society, 87(6), 761-773.
https://hdl.handle.net/21.15107/rcub_agrospace_6139

Jovanović UD, Marković MM, Čokeša ĐM, Živković NV, Radmanović SB. Self-aggregation of soil humic acids with respect to their structural characteristics. in Journal of the Serbian Chemical Society. 2022;87(6):761-773.
https://hdl.handle.net/21.15107/rcub_agrospace_6139 .

Jovanović, Uroš D., Marković, Mirjana M., Čokeša, Đuro M., Živković, Nikola V., Radmanović, Svjetlana B., "Self-aggregation of soil humic acids with respect to their structural characteristics" in Journal of the Serbian Chemical Society, 87, no. 6 (2022):761-773,
https://hdl.handle.net/21.15107/rcub_agrospace_6139 .

TY  - CONF
AU  - Radmanović, Svjetlana
AU  - Đorđević, Aleksandar
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6693
AB  - Soil moisture and temperature regimes are diagnostic characteristics used for higher categories of the USDA Soil Taxonomy System. The first step of Rendzina soil classification in Serbia according to this international system is to determine the soil temperature and moisture regime classes. As measured soil moisture and temperature data of the investigated Rendzina profiles were missing, the Rendzina soil temperature and moisture regimes were estimated based on climate data (30 years) – monthly and annual air temperature and precipitation, and potential evapotranspiration. Six weather stations were selected: at Novi Sad for the northern, Valjevo for the western, Belgrade for the central, Negotin for the eastern, Sjenica for the southwestern and Niš for the southeastern regions of Serbia. The estimated mean annual soil temperature in the study areas ranged from 8.7 to 14.5°C, and the mean summer and winter soil temperatures differed by 18.6-21.4°C. The Rendzina soils in all the study areas match the criteria for the mesic soil temperature regime. Precipitation becomes greater than potential evapotranspiration and water recharge begins in September in Sjenica and October in the other areas. Potential evapotranspiration exceeds precipitation and utilization starts in March (Novi Sad, Belgrade and Niš) or April (Valjevo, Sjenica and Niš). The amount of moisture stored in the soil during this period, plus precipitation, is believed to be sufficient to support potential evapotranspiration and avoid significant water deficits in western and southwestern Serbia (Valjevo and Sjenica). Utilization is expected to exceed recharge plus precipitation in all other areas, causing soil water deficit to begin in April in Belgrade and May in Novi Sad, Negotin and Niš. Therefore, the soils in the western and southwestern areas match the criteria for the udic soil moisture regime, whereas soils in the other areas (central, east and southeast) correspond to the ustic soil moisture regime. Possibly lower water infiltration and available water capacity, caused by geomorphological and physical properties of Rendzina soils, can increase water deficits further, but precipitation in the summer months is hopefully sufficient to avoid long periods of dry days. Separation of Rendzina soils in Serbia into two soil moisture regimes, udic and ustic, could affect their classification at higher taxonomic levels according to the Soil Taxonomy System.
PB  - Serbian Society of Soil Science
C3  - 3rd International and 15th National Congress: SOILS FOR FUTURE UNDER GLOBAL CHALLENGES, Sokobanja, Serbia
T1  - TEMPERATURE AND MOISTURE REGIMES OF RENDZINA SOILS IN SERBIA ACCORDING TO THE USDA SOIL TAXONOMY SYSTEM
EP  - 153
SP  - 143
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6693
ER  - 

@conference{
author = "Radmanović, Svjetlana and Đorđević, Aleksandar",
year = "2021",
abstract = "Soil moisture and temperature regimes are diagnostic characteristics used for higher categories of the USDA Soil Taxonomy System. The first step of Rendzina soil classification in Serbia according to this international system is to determine the soil temperature and moisture regime classes. As measured soil moisture and temperature data of the investigated Rendzina profiles were missing, the Rendzina soil temperature and moisture regimes were estimated based on climate data (30 years) – monthly and annual air temperature and precipitation, and potential evapotranspiration. Six weather stations were selected: at Novi Sad for the northern, Valjevo for the western, Belgrade for the central, Negotin for the eastern, Sjenica for the southwestern and Niš for the southeastern regions of Serbia. The estimated mean annual soil temperature in the study areas ranged from 8.7 to 14.5°C, and the mean summer and winter soil temperatures differed by 18.6-21.4°C. The Rendzina soils in all the study areas match the criteria for the mesic soil temperature regime. Precipitation becomes greater than potential evapotranspiration and water recharge begins in September in Sjenica and October in the other areas. Potential evapotranspiration exceeds precipitation and utilization starts in March (Novi Sad, Belgrade and Niš) or April (Valjevo, Sjenica and Niš). The amount of moisture stored in the soil during this period, plus precipitation, is believed to be sufficient to support potential evapotranspiration and avoid significant water deficits in western and southwestern Serbia (Valjevo and Sjenica). Utilization is expected to exceed recharge plus precipitation in all other areas, causing soil water deficit to begin in April in Belgrade and May in Novi Sad, Negotin and Niš. Therefore, the soils in the western and southwestern areas match the criteria for the udic soil moisture regime, whereas soils in the other areas (central, east and southeast) correspond to the ustic soil moisture regime. Possibly lower water infiltration and available water capacity, caused by geomorphological and physical properties of Rendzina soils, can increase water deficits further, but precipitation in the summer months is hopefully sufficient to avoid long periods of dry days. Separation of Rendzina soils in Serbia into two soil moisture regimes, udic and ustic, could affect their classification at higher taxonomic levels according to the Soil Taxonomy System.",
publisher = "Serbian Society of Soil Science",
journal = "3rd International and 15th National Congress: SOILS FOR FUTURE UNDER GLOBAL CHALLENGES, Sokobanja, Serbia",
title = "TEMPERATURE AND MOISTURE REGIMES OF RENDZINA SOILS IN SERBIA ACCORDING TO THE USDA SOIL TAXONOMY SYSTEM",
pages = "153-143",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6693"
}

Radmanović, S.,& Đorđević, A.. (2021). TEMPERATURE AND MOISTURE REGIMES OF RENDZINA SOILS IN SERBIA ACCORDING TO THE USDA SOIL TAXONOMY SYSTEM. in 3rd International and 15th National Congress: SOILS FOR FUTURE UNDER GLOBAL CHALLENGES, Sokobanja, Serbia
Serbian Society of Soil Science., 143-153.
https://hdl.handle.net/21.15107/rcub_agrospace_6693

Radmanović S, Đorđević A. TEMPERATURE AND MOISTURE REGIMES OF RENDZINA SOILS IN SERBIA ACCORDING TO THE USDA SOIL TAXONOMY SYSTEM. in 3rd International and 15th National Congress: SOILS FOR FUTURE UNDER GLOBAL CHALLENGES, Sokobanja, Serbia. 2021;:143-153.
https://hdl.handle.net/21.15107/rcub_agrospace_6693 .

Radmanović, Svjetlana, Đorđević, Aleksandar, "TEMPERATURE AND MOISTURE REGIMES OF RENDZINA SOILS IN SERBIA ACCORDING TO THE USDA SOIL TAXONOMY SYSTEM" in 3rd International and 15th National Congress: SOILS FOR FUTURE UNDER GLOBAL CHALLENGES, Sokobanja, Serbia (2021):143-153,
https://hdl.handle.net/21.15107/rcub_agrospace_6693 .

TY  - CONF
AU  - Radmanović, Svjetlana
AU  - Marković, Mirjana
AU  - Živković, Nikola
AU  - Čokeša, Đuro
AU  - Jovanović, Uroš
AU  - Bogosavljević, Jelena
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6650
AB  - Humic substances, including humic acids (HAs), are the most abundant fractions of soil organic matter. Their composition, structure and properties, determined by soil formation conditions, can be used as indicators of pedogenetic processes. In this study, elemental composition as very important part of HAs characterization was determined for humic acids isolated from the soils of Serbia developed under different pedogenetic conditions (Chernozem (CH), Smonica/Vertisol (VR), Rendzina/Regosol (RG), Pseudoglej/Planosol (PL) and Prelazni treset/Histosol (HI) and related to soil properties and origin. Soil samples were collected at 0 to 15-30 cm depth. Soil texture, organic C (soil organic matter for HI), and pH were determined by common methods. HA samples were isolated using a modified IHSS method. The C, H, and N contents of HA samples were determined using elemental analyzer (CHNS 628, LECO Corporation, USA) after drying the samples over P2O5 under vacuum. Their percentages were calculated on the ash-free basis. The oxygen content was obtained as the difference. The ash content was determined by a dry combustion method. The C/N, O/C, H/C and O/H atomic ratios were used as indicators of variations in HA properties as a function of HA origin. Internal oxidation degree (ω) was calculated by the equation: ω = (2O+3N-H)/C, where: O, N, H and C are element contents (atomic %). Elemental compositions of investigated HAs fall within the range of average values reported for soil HAs. According to the humification degree obtained, HAs studied are ranged as follows: CH>VR>RG>HI>PL. Both correlations done (H/C versus O/C and H versus C) separate HAs in three groups: CH and VR - the most dehydrogenated and demethylated, i.e. the most stable; RG - the most oxidated; and HI and PL - the most hydrogenated. HAs elemental composition is related to soil organic C and pH, but not related to soil clay. Internal oxidation degree is used as an indicator of plant residue humification progress. Positive ω values point out well drained soils with prevailing oxidizing conditions and negative values reflect anaerobic soil conditions. Internal oxidation degree values are obviously lower in hydromorphic HI and PL HAs compared to terrestrial RG, CH and VR HAs, but positive values indicate predominance of aerobic under anaerobic conditions in surface layer of hydromorphic soils. Results obtained in this study are in agreement with the literature data, indicating characteristics of HAs as particularly dependant on environmental conditions.
PB  - Serbian Society of Soil Science
C3  - 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia
T1  - ELEMENTAL COMPOSITION OF HUMIC ACIDS ISOLATED FROM CHERNOZEM, VERTISOL, REGOSOL, PLANOSOL AND HISTOSOL
EP  - 70
SP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6650
ER  - 

@conference{
author = "Radmanović, Svjetlana and Marković, Mirjana and Živković, Nikola and Čokeša, Đuro and Jovanović, Uroš and Bogosavljević, Jelena",
year = "2021",
abstract = "Humic substances, including humic acids (HAs), are the most abundant fractions of soil organic matter. Their composition, structure and properties, determined by soil formation conditions, can be used as indicators of pedogenetic processes. In this study, elemental composition as very important part of HAs characterization was determined for humic acids isolated from the soils of Serbia developed under different pedogenetic conditions (Chernozem (CH), Smonica/Vertisol (VR), Rendzina/Regosol (RG), Pseudoglej/Planosol (PL) and Prelazni treset/Histosol (HI) and related to soil properties and origin. Soil samples were collected at 0 to 15-30 cm depth. Soil texture, organic C (soil organic matter for HI), and pH were determined by common methods. HA samples were isolated using a modified IHSS method. The C, H, and N contents of HA samples were determined using elemental analyzer (CHNS 628, LECO Corporation, USA) after drying the samples over P2O5 under vacuum. Their percentages were calculated on the ash-free basis. The oxygen content was obtained as the difference. The ash content was determined by a dry combustion method. The C/N, O/C, H/C and O/H atomic ratios were used as indicators of variations in HA properties as a function of HA origin. Internal oxidation degree (ω) was calculated by the equation: ω = (2O+3N-H)/C, where: O, N, H and C are element contents (atomic %). Elemental compositions of investigated HAs fall within the range of average values reported for soil HAs. According to the humification degree obtained, HAs studied are ranged as follows: CH>VR>RG>HI>PL. Both correlations done (H/C versus O/C and H versus C) separate HAs in three groups: CH and VR - the most dehydrogenated and demethylated, i.e. the most stable; RG - the most oxidated; and HI and PL - the most hydrogenated. HAs elemental composition is related to soil organic C and pH, but not related to soil clay. Internal oxidation degree is used as an indicator of plant residue humification progress. Positive ω values point out well drained soils with prevailing oxidizing conditions and negative values reflect anaerobic soil conditions. Internal oxidation degree values are obviously lower in hydromorphic HI and PL HAs compared to terrestrial RG, CH and VR HAs, but positive values indicate predominance of aerobic under anaerobic conditions in surface layer of hydromorphic soils. Results obtained in this study are in agreement with the literature data, indicating characteristics of HAs as particularly dependant on environmental conditions.",
publisher = "Serbian Society of Soil Science",
journal = "3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia",
title = "ELEMENTAL COMPOSITION OF HUMIC ACIDS ISOLATED FROM CHERNOZEM, VERTISOL, REGOSOL, PLANOSOL AND HISTOSOL",
pages = "70-64",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6650"
}

Radmanović, S., Marković, M., Živković, N., Čokeša, Đ., Jovanović, U.,& Bogosavljević, J.. (2021). ELEMENTAL COMPOSITION OF HUMIC ACIDS ISOLATED FROM CHERNOZEM, VERTISOL, REGOSOL, PLANOSOL AND HISTOSOL. in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia
Serbian Society of Soil Science., 64-70.
https://hdl.handle.net/21.15107/rcub_agrospace_6650

Radmanović S, Marković M, Živković N, Čokeša Đ, Jovanović U, Bogosavljević J. ELEMENTAL COMPOSITION OF HUMIC ACIDS ISOLATED FROM CHERNOZEM, VERTISOL, REGOSOL, PLANOSOL AND HISTOSOL. in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia. 2021;:64-70.
https://hdl.handle.net/21.15107/rcub_agrospace_6650 .

Radmanović, Svjetlana, Marković, Mirjana, Živković, Nikola, Čokeša, Đuro, Jovanović, Uroš, Bogosavljević, Jelena, "ELEMENTAL COMPOSITION OF HUMIC ACIDS ISOLATED FROM CHERNOZEM, VERTISOL, REGOSOL, PLANOSOL AND HISTOSOL" in 3rd International and 15th National Congress of Serbian Society of Soil Science: Soils for Future under Global Challenges, Sokobanja, Serbia (2021):64-70,
https://hdl.handle.net/21.15107/rcub_agrospace_6650 .

TY  - CONF
AU  - Životić, Ljubomir
AU  - Radmanović, Svjetlana
AU  - Žarković, Branka
AU  - Radovanović, Vesna
AU  - Bogosavljević, Jelena
AU  - Djordjević, Aleksandar
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6652
AB  - The global estimates of soil organic carbon (SOC) stocks using modeling approaches are prone to under and overestimations. The aim of this work is to present the variation of SOC stocks at the foot and toe slopes of Mt. Vukan, East-Central Serbia. Investigated area is located at the contact of Jurassic limestones and dolomites, and fluviatile-colluvial deposits. Soil survey encountered 42 soil profiles and collection of 183 soil disturbed samples, and five undisturbed samples per each horizon. Humus content was determined by Tjurin method. Five different soil mapping units, according to national classification, were discovered at 168 ha of Great Field: Colluvial Kalkomelanosols, Calcaric Chernozems, non-carbonate Chernozems, Eutric Cambisols, and Colluvial Soils. SOC stocks extracted from Soilgrids ranges between 65–72 t ha-1 for 0–30 cm depth (avg. 67.0 t ha-1). Measured data indicate much higher variations, between 50.2 and 110.6 t ha-1, with an average value of 77.8±16.3 t ha-1. Hence, around 15% difference was found between measured and estimated data. Eutric Cambisols have the lowest SOC stocks, 61.3±9.9 t ha-1, lower then estimated value. All other soil types have higher SOC stocks compared with modeled data. Non carbonate Chernozems have an average SOC stocks of 72.6±10.8 t ha-1, whereas Colluvial soil have similar values, 73.6±8.2 t ha-1. The highest SOC stocks was found in Colluvial Kalkomelanosols, 89.6±15.8 t ha-1, followed by Carbonate Chernozems, 84.3±9.3 t ha-1. These values are for 25–33% higher compared with modeled data. Variation of SOC stocks data has normal distribution for all soil types (11.0–18.0%). Our results indicate that global SOC stocks are underestimated in the area of Great Field and that SOC stock can face large variations on small area. These variations might be related to the impact of landscape and land use practices, and are relevant to soil mapping units. Another raising question raised from this study is related to the number of samples that should be collected in SOC campaigns in the conditions of high soil spatial variability.
PB  - Serbian Society of Soil Science
C3  - Symposium with international participation of Serbian Society of Soil Science: Irrigation and drainage in the light of climate change, Vršac, Serbia, 9-11 September, 2020, 57
T1  - VARIATION IN SOIL ORGANIC CARBON STOCKS IN THE SOILS OF FOOT AND TOE SLOPES OF MOUNTAIN VUKAN, EAST–CENTRAL SERBIA
EP  - 57
SP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6652
ER  - 

@conference{
author = "Životić, Ljubomir and Radmanović, Svjetlana and Žarković, Branka and Radovanović, Vesna and Bogosavljević, Jelena and Djordjević, Aleksandar",
year = "2020",
abstract = "The global estimates of soil organic carbon (SOC) stocks using modeling approaches are prone to under and overestimations. The aim of this work is to present the variation of SOC stocks at the foot and toe slopes of Mt. Vukan, East-Central Serbia. Investigated area is located at the contact of Jurassic limestones and dolomites, and fluviatile-colluvial deposits. Soil survey encountered 42 soil profiles and collection of 183 soil disturbed samples, and five undisturbed samples per each horizon. Humus content was determined by Tjurin method. Five different soil mapping units, according to national classification, were discovered at 168 ha of Great Field: Colluvial Kalkomelanosols, Calcaric Chernozems, non-carbonate Chernozems, Eutric Cambisols, and Colluvial Soils. SOC stocks extracted from Soilgrids ranges between 65–72 t ha-1 for 0–30 cm depth (avg. 67.0 t ha-1). Measured data indicate much higher variations, between 50.2 and 110.6 t ha-1, with an average value of 77.8±16.3 t ha-1. Hence, around 15% difference was found between measured and estimated data. Eutric Cambisols have the lowest SOC stocks, 61.3±9.9 t ha-1, lower then estimated value. All other soil types have higher SOC stocks compared with modeled data. Non carbonate Chernozems have an average SOC stocks of 72.6±10.8 t ha-1, whereas Colluvial soil have similar values, 73.6±8.2 t ha-1. The highest SOC stocks was found in Colluvial Kalkomelanosols, 89.6±15.8 t ha-1, followed by Carbonate Chernozems, 84.3±9.3 t ha-1. These values are for 25–33% higher compared with modeled data. Variation of SOC stocks data has normal distribution for all soil types (11.0–18.0%). Our results indicate that global SOC stocks are underestimated in the area of Great Field and that SOC stock can face large variations on small area. These variations might be related to the impact of landscape and land use practices, and are relevant to soil mapping units. Another raising question raised from this study is related to the number of samples that should be collected in SOC campaigns in the conditions of high soil spatial variability.",
publisher = "Serbian Society of Soil Science",
journal = "Symposium with international participation of Serbian Society of Soil Science: Irrigation and drainage in the light of climate change, Vršac, Serbia, 9-11 September, 2020, 57",
title = "VARIATION IN SOIL ORGANIC CARBON STOCKS IN THE SOILS OF FOOT AND TOE SLOPES OF MOUNTAIN VUKAN, EAST–CENTRAL SERBIA",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6652"
}

Životić, L., Radmanović, S., Žarković, B., Radovanović, V., Bogosavljević, J.,& Djordjević, A.. (2020). VARIATION IN SOIL ORGANIC CARBON STOCKS IN THE SOILS OF FOOT AND TOE SLOPES OF MOUNTAIN VUKAN, EAST–CENTRAL SERBIA. in Symposium with international participation of Serbian Society of Soil Science: Irrigation and drainage in the light of climate change, Vršac, Serbia, 9-11 September, 2020, 57
Serbian Society of Soil Science., 57-57.
https://hdl.handle.net/21.15107/rcub_agrospace_6652

Životić L, Radmanović S, Žarković B, Radovanović V, Bogosavljević J, Djordjević A. VARIATION IN SOIL ORGANIC CARBON STOCKS IN THE SOILS OF FOOT AND TOE SLOPES OF MOUNTAIN VUKAN, EAST–CENTRAL SERBIA. in Symposium with international participation of Serbian Society of Soil Science: Irrigation and drainage in the light of climate change, Vršac, Serbia, 9-11 September, 2020, 57. 2020;:57-57.
https://hdl.handle.net/21.15107/rcub_agrospace_6652 .

Životić, Ljubomir, Radmanović, Svjetlana, Žarković, Branka, Radovanović, Vesna, Bogosavljević, Jelena, Djordjević, Aleksandar, "VARIATION IN SOIL ORGANIC CARBON STOCKS IN THE SOILS OF FOOT AND TOE SLOPES OF MOUNTAIN VUKAN, EAST–CENTRAL SERBIA" in Symposium with international participation of Serbian Society of Soil Science: Irrigation and drainage in the light of climate change, Vršac, Serbia, 9-11 September, 2020, 57 (2020):57-57,
https://hdl.handle.net/21.15107/rcub_agrospace_6652 .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Gajić-Kvaščev, Maja D.
AU  - Mrvić, Vesna
AU  - Djordjević, Aleksandar
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5471
AB  - According to the Serbian official soil classification system, Rendzina is a soil type with an A-AC-C-R profile, developed on parent rock containing more than 20% of calcareous material (except soils with an A-R profile on hard pure limestone or dolomite). Previous investigations have shown that 29 Rendzina soil profiles from Serbia belong to the reference soil groups (RSGs) of Leptosols, Regosols and Phaeozems according to the World Reference Base for Soil Resources (WRB 2015). The present study addresses the correlations among three WRB RSGs in terms of soil texture, mean weight diameter (MWD), total N content, and humus fractional composition using Principal Component Analysis (PCA). The objective is to better understand the mutual relationship between the classification soil units used in Serbia and the international WRB system. The results show that PCA cannot unequivocally distinguish between these three RSGs. Leptosols and Regosols are highly incoherent groups while the group of Phaeozems is highly coherent, leading to the conclusion that the physical and chemical properties of the soil profiles of Phaoeozems are specific. It is obvious that soil depth and color, which are the overriding factors in the differentiation of Rendzina soils into three WRB RSGs, had no significant effect on these properties. The results further show that soil properties such as texture, MWD, humus fractional composition, etc. cannot be used to correlate Rendzina soils from Serbia with WRB. Instead, careful correlation of individual soil profiles is needed based on quantitative soil data analysis as required by WRB.
AB  - Prema zvaničnoj klasifikaciji zemljišta Srbije prema Škoriću i saradnicima, rendzina je tip zemljišta građe profila A-AC-C-R, čiji matični supstrati sadrže više od 20% karbonata (izuzev zemljišta građe profila A-R, obrazovanih na čistim tvrdim krečnjacima i dolomitima). Prethodna istraživanja su pokazala da 29 profila rendzine sa područja Srbije, prema međunarodnoj WRB klasifikaciji zemljišta iz 2015. godine, pripadaju referentnim grupama zemljišta (RSG): leptosola, faozema i regosola. U ovom radu je testiran međusobni odnos izdvojenih WRB RSG prema teksturi, prosečnom masenom prečniku (MWD), sadržaju ukupnog N i frakcionom sastavu humusa, metodom analize glavnih komponenti (PCA), a sve s ciljem boljeg razumevanja međusobnog odnosa klasifikacionih jedinica domaćeg i međunarodnog WRB sistema za klasifikaciju zemljišta. Rezultati su pokazali da PCA ne može na nedvosmislen način da razlikuje ove tri referentne grupe zemljišta. Pri tome su RSG leptosola i regosola veoma nekoherentne, dok je RSG faozema izrazito koherentna što ostavlja prostora za zaključak o specifičnosti fizičkih i hemijskih osobina rendzina koje pripadaju faozemima. Očito je da dubina i boja zemljišta, koje su bile presudne za diferenciranje zemljišta tipa rendzina na tri WRB RSG, nisu imale značajan uticaj na osobine ispitivane u ovom radu. Rezultati su nadalje pokazali da podatke o osobinama zemljišta kao što su tekstura, MWD, frakcioni sastav humusa, itd., nije moguće koristiti za korelaciju zemljišta tipa rendzina u Srbiji sa WRB sistemom klasifikacije, već je neophodna pažljiva klasifikacija svakog pojedinačnog profila zemljišta bazirana isključivo na kvantitativnim podacima koje je WRB sistem predvideo svojim zahtevima.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - Characteristics of Rendzina soils in Serbia and their WRB classification
T1  - Karakteristike rendzina u Srbiji i njihova klasifikacija prema WRB sistemu
EP  - 261
IS  - 3
SP  - 251
VL  - 65
DO  - 10.2298/JAS2003251R
ER  - 

@article{
author = "Radmanović, Svjetlana and Gajić-Kvaščev, Maja D. and Mrvić, Vesna and Djordjević, Aleksandar",
year = "2020",
abstract = "According to the Serbian official soil classification system, Rendzina is a soil type with an A-AC-C-R profile, developed on parent rock containing more than 20% of calcareous material (except soils with an A-R profile on hard pure limestone or dolomite). Previous investigations have shown that 29 Rendzina soil profiles from Serbia belong to the reference soil groups (RSGs) of Leptosols, Regosols and Phaeozems according to the World Reference Base for Soil Resources (WRB 2015). The present study addresses the correlations among three WRB RSGs in terms of soil texture, mean weight diameter (MWD), total N content, and humus fractional composition using Principal Component Analysis (PCA). The objective is to better understand the mutual relationship between the classification soil units used in Serbia and the international WRB system. The results show that PCA cannot unequivocally distinguish between these three RSGs. Leptosols and Regosols are highly incoherent groups while the group of Phaeozems is highly coherent, leading to the conclusion that the physical and chemical properties of the soil profiles of Phaoeozems are specific. It is obvious that soil depth and color, which are the overriding factors in the differentiation of Rendzina soils into three WRB RSGs, had no significant effect on these properties. The results further show that soil properties such as texture, MWD, humus fractional composition, etc. cannot be used to correlate Rendzina soils from Serbia with WRB. Instead, careful correlation of individual soil profiles is needed based on quantitative soil data analysis as required by WRB., Prema zvaničnoj klasifikaciji zemljišta Srbije prema Škoriću i saradnicima, rendzina je tip zemljišta građe profila A-AC-C-R, čiji matični supstrati sadrže više od 20% karbonata (izuzev zemljišta građe profila A-R, obrazovanih na čistim tvrdim krečnjacima i dolomitima). Prethodna istraživanja su pokazala da 29 profila rendzine sa područja Srbije, prema međunarodnoj WRB klasifikaciji zemljišta iz 2015. godine, pripadaju referentnim grupama zemljišta (RSG): leptosola, faozema i regosola. U ovom radu je testiran međusobni odnos izdvojenih WRB RSG prema teksturi, prosečnom masenom prečniku (MWD), sadržaju ukupnog N i frakcionom sastavu humusa, metodom analize glavnih komponenti (PCA), a sve s ciljem boljeg razumevanja međusobnog odnosa klasifikacionih jedinica domaćeg i međunarodnog WRB sistema za klasifikaciju zemljišta. Rezultati su pokazali da PCA ne može na nedvosmislen način da razlikuje ove tri referentne grupe zemljišta. Pri tome su RSG leptosola i regosola veoma nekoherentne, dok je RSG faozema izrazito koherentna što ostavlja prostora za zaključak o specifičnosti fizičkih i hemijskih osobina rendzina koje pripadaju faozemima. Očito je da dubina i boja zemljišta, koje su bile presudne za diferenciranje zemljišta tipa rendzina na tri WRB RSG, nisu imale značajan uticaj na osobine ispitivane u ovom radu. Rezultati su nadalje pokazali da podatke o osobinama zemljišta kao što su tekstura, MWD, frakcioni sastav humusa, itd., nije moguće koristiti za korelaciju zemljišta tipa rendzina u Srbiji sa WRB sistemom klasifikacije, već je neophodna pažljiva klasifikacija svakog pojedinačnog profila zemljišta bazirana isključivo na kvantitativnim podacima koje je WRB sistem predvideo svojim zahtevima.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "Characteristics of Rendzina soils in Serbia and their WRB classification, Karakteristike rendzina u Srbiji i njihova klasifikacija prema WRB sistemu",
pages = "261-251",
number = "3",
volume = "65",
doi = "10.2298/JAS2003251R"
}

Radmanović, S., Gajić-Kvaščev, M. D., Mrvić, V.,& Djordjević, A.. (2020). Characteristics of Rendzina soils in Serbia and their WRB classification. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 65(3), 251-261.
https://doi.org/10.2298/JAS2003251R

Radmanović S, Gajić-Kvaščev MD, Mrvić V, Djordjević A. Characteristics of Rendzina soils in Serbia and their WRB classification. in Journal of Agricultural Sciences (Belgrade). 2020;65(3):251-261.
doi:10.2298/JAS2003251R .

Radmanović, Svjetlana, Gajić-Kvaščev, Maja D., Mrvić, Vesna, Djordjević, Aleksandar, "Characteristics of Rendzina soils in Serbia and their WRB classification" in Journal of Agricultural Sciences (Belgrade), 65, no. 3 (2020):251-261,
https://doi.org/10.2298/JAS2003251R . .

TY  - JOUR
AU  - Durović-Pejcev, Rada D.
AU  - Radmanović, Svjetlana
AU  - Tomić, Zorica
AU  - Kaludjerović, Lazar
AU  - Bursić, Vojislava P.
AU  - Santrić, Ljiljana R.
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5277
AB  - Studies of adsorption and desorption of pesticides by soils are important for understanding and predicting their fate and transmission in the environment. Considering the agricultural and environmental relevance of clomazone, its sorption-desorption behaviour was studied in two widespread Serbian agricultural soil types named Regosol and Chernozem. Both phenomena are well-described by the Freundlich equation, which shows that clomazone is generally sorbed more to organic matter than to the mineral soil fractions. Chernozem, a soil containing more of both organic matter and clay, was found to bind more, and desorb less herbicide, than Regosol. Higher desorption hysteresis obtained for Chernozem could be attributed to its larger number of high-energy sorption sites, compared to Regosol. In both soils, the hysteresis effect increases with the rise of initial clomazone concentration in the soil-water system, while the percentage of desorbed amount during successive desorption cycles decreases. The presented adsorption-desorption study shows that soil composition plays an important role in clomazone behaviour and fate in the environment, and a significantly reduced probability of contamination of both the deeper soil layers and groundwater may be expected when this herbicide is found in humus-rich soils.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Adsorption-desorption behaviour of clomazone in Regosol and Chernozem agricultural soils
EP  - 819
IS  - 6
SP  - 809
VL  - 85
DO  - 10.2298/JSC190917122D
ER  - 

@article{
author = "Durović-Pejcev, Rada D. and Radmanović, Svjetlana and Tomić, Zorica and Kaludjerović, Lazar and Bursić, Vojislava P. and Santrić, Ljiljana R.",
year = "2020",
abstract = "Studies of adsorption and desorption of pesticides by soils are important for understanding and predicting their fate and transmission in the environment. Considering the agricultural and environmental relevance of clomazone, its sorption-desorption behaviour was studied in two widespread Serbian agricultural soil types named Regosol and Chernozem. Both phenomena are well-described by the Freundlich equation, which shows that clomazone is generally sorbed more to organic matter than to the mineral soil fractions. Chernozem, a soil containing more of both organic matter and clay, was found to bind more, and desorb less herbicide, than Regosol. Higher desorption hysteresis obtained for Chernozem could be attributed to its larger number of high-energy sorption sites, compared to Regosol. In both soils, the hysteresis effect increases with the rise of initial clomazone concentration in the soil-water system, while the percentage of desorbed amount during successive desorption cycles decreases. The presented adsorption-desorption study shows that soil composition plays an important role in clomazone behaviour and fate in the environment, and a significantly reduced probability of contamination of both the deeper soil layers and groundwater may be expected when this herbicide is found in humus-rich soils.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Adsorption-desorption behaviour of clomazone in Regosol and Chernozem agricultural soils",
pages = "819-809",
number = "6",
volume = "85",
doi = "10.2298/JSC190917122D"
}

Durović-Pejcev, R. D., Radmanović, S., Tomić, Z., Kaludjerović, L., Bursić, V. P.,& Santrić, L. R.. (2020). Adsorption-desorption behaviour of clomazone in Regosol and Chernozem agricultural soils. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 85(6), 809-819.
https://doi.org/10.2298/JSC190917122D

Durović-Pejcev RD, Radmanović S, Tomić Z, Kaludjerović L, Bursić VP, Santrić LR. Adsorption-desorption behaviour of clomazone in Regosol and Chernozem agricultural soils. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2020;85(6):809-819.
doi:10.2298/JSC190917122D .

Durović-Pejcev, Rada D., Radmanović, Svjetlana, Tomić, Zorica, Kaludjerović, Lazar, Bursić, Vojislava P., Santrić, Ljiljana R., "Adsorption-desorption behaviour of clomazone in Regosol and Chernozem agricultural soils" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 85, no. 6 (2020):809-819,
https://doi.org/10.2298/JSC190917122D . .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Marković, Mirjana M.
AU  - Jovanović, Uroš D.
AU  - Gajić-Kvascev, Maja D.
AU  - Čokeša, Djuro M.
AU  - Lilić, Jasmina A.
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5393
AB  - Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991. Humic acids isolated from these Technosols were investigated to find out if their properties underwent any changes since reclamation. Two groups of control samples were used. Elemental composition (CHNS analysis) falls within the range of average soil humic acids. Humic acids belong to the type B pointing out to its lower humification degree (UV-Vis). Relative abundances of functional groups are ranged as follows: polysaccharide C >= aromatic C > carboxyl C > OH group > aliphatic C. Aromaticity indexes are low, 1.883.25 (ATR-FTIR). Basic units at pH 10 are in the 11.7-26.8 nm range. Pronounced reaggregation (1462--5218 nm) at pH 3 points out to less expressed humic acid sol stability, as well as to increase in aromatic condensation degree (dynamic light scattering). No significant changes have occurred in technosol humic acids since the recultivation, confirming stability of their properties over time (PCA). Nevertheless, humic acids from very strongly acidic Technosols show higher humifycation degree possibly originating from arable soils used in reclamation, but more likely from low soil pH and low litter input, results of unsuccessful reclamation.
PB  - Srpsko hemijsko društvo, Beograd
T2  - JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
T1  - Properties of humic acids from copper tailings 20 years after reclamation
EP  - 419
IS  - 3
SP  - 407
VL  - 85
DO  - 10.2298/JSC190717112R
ER  - 

@article{
author = "Radmanović, Svjetlana and Marković, Mirjana M. and Jovanović, Uroš D. and Gajić-Kvascev, Maja D. and Čokeša, Djuro M. and Lilić, Jasmina A.",
year = "2020",
abstract = "Part of Cu post flotation tailings of Serbia ZiJin Bor Copper, Serbia, was reclaimed by restoration of top soil with arable soils, and revegetation in 1991. Humic acids isolated from these Technosols were investigated to find out if their properties underwent any changes since reclamation. Two groups of control samples were used. Elemental composition (CHNS analysis) falls within the range of average soil humic acids. Humic acids belong to the type B pointing out to its lower humification degree (UV-Vis). Relative abundances of functional groups are ranged as follows: polysaccharide C >= aromatic C > carboxyl C > OH group > aliphatic C. Aromaticity indexes are low, 1.883.25 (ATR-FTIR). Basic units at pH 10 are in the 11.7-26.8 nm range. Pronounced reaggregation (1462--5218 nm) at pH 3 points out to less expressed humic acid sol stability, as well as to increase in aromatic condensation degree (dynamic light scattering). No significant changes have occurred in technosol humic acids since the recultivation, confirming stability of their properties over time (PCA). Nevertheless, humic acids from very strongly acidic Technosols show higher humifycation degree possibly originating from arable soils used in reclamation, but more likely from low soil pH and low litter input, results of unsuccessful reclamation.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "JOURNAL OF THE SERBIAN CHEMICAL SOCIETY",
title = "Properties of humic acids from copper tailings 20 years after reclamation",
pages = "419-407",
number = "3",
volume = "85",
doi = "10.2298/JSC190717112R"
}

Radmanović, S., Marković, M. M., Jovanović, U. D., Gajić-Kvascev, M. D., Čokeša, D. M.,& Lilić, J. A.. (2020). Properties of humic acids from copper tailings 20 years after reclamation. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Srpsko hemijsko društvo, Beograd., 85(3), 407-419.
https://doi.org/10.2298/JSC190717112R

Radmanović S, Marković MM, Jovanović UD, Gajić-Kvascev MD, Čokeša DM, Lilić JA. Properties of humic acids from copper tailings 20 years after reclamation. in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY. 2020;85(3):407-419.
doi:10.2298/JSC190717112R .

Radmanović, Svjetlana, Marković, Mirjana M., Jovanović, Uroš D., Gajić-Kvascev, Maja D., Čokeša, Djuro M., Lilić, Jasmina A., "Properties of humic acids from copper tailings 20 years after reclamation" in JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 85, no. 3 (2020):407-419,
https://doi.org/10.2298/JSC190717112R . .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Djordjević, Aleksandar
AU  - Nikolić, Nataša
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4677
AB  - This paper shows organic matter composition (humic acids, fulvic acids, humins) and fractions of humic (free and bounded with mobile R2O3 (HAI), bounded with Ca (HA2), and bounded with clay and stabile R2O3 (HA3)), and fulvo acids (free and bounded with mobile R2O3), bounded with HA1 bounded with HA2, and bounded with HA3), in Rendzina soils on different altitudes (151-1210 m), landforms (hilltop, flat or very gentle slope; foot slope, very gentle slope, south, southwest; slope 45-80 degrees, south, southeast, southwest; slope 20-60 degrees, north, northwest, northeast), and regions (Srem, west, central, east and southeast Serbia). Differences in temperature and water regimes of Rendzinas on various altitudes are not so prominent to have a significant impact on organic matter composition. Landform has more significant impact, with average higher content of HA on slopes, and FA on flat positions, which could be attributed to reduced wetting of soils on slopes. Exposition had no significant impact on humus composition. Differences in soil moisture among regions are more pronounced than differences in soil temperature. Differences in soil organic matter composition among Rendzinas from various regions are small and do not follow pattern of humidity change. Still, organic matter of Rendzina from most humid western region has the least favourable HA/FA ratio, while at the driest east and southeast regions content of humin is the greatest.
PB  - Technical Inst Bijeljina, Bijeljina
T2  - Archives for Technical Sciences
T1  - Humus composition of rendzina soils in different environmental conditions of Serbia
EP  - 64
IS  - 19
SP  - 57
DO  - 10.7251/afts.2018.1019.057R
ER  - 

@article{
author = "Radmanović, Svjetlana and Djordjević, Aleksandar and Nikolić, Nataša",
year = "2018",
abstract = "This paper shows organic matter composition (humic acids, fulvic acids, humins) and fractions of humic (free and bounded with mobile R2O3 (HAI), bounded with Ca (HA2), and bounded with clay and stabile R2O3 (HA3)), and fulvo acids (free and bounded with mobile R2O3), bounded with HA1 bounded with HA2, and bounded with HA3), in Rendzina soils on different altitudes (151-1210 m), landforms (hilltop, flat or very gentle slope; foot slope, very gentle slope, south, southwest; slope 45-80 degrees, south, southeast, southwest; slope 20-60 degrees, north, northwest, northeast), and regions (Srem, west, central, east and southeast Serbia). Differences in temperature and water regimes of Rendzinas on various altitudes are not so prominent to have a significant impact on organic matter composition. Landform has more significant impact, with average higher content of HA on slopes, and FA on flat positions, which could be attributed to reduced wetting of soils on slopes. Exposition had no significant impact on humus composition. Differences in soil moisture among regions are more pronounced than differences in soil temperature. Differences in soil organic matter composition among Rendzinas from various regions are small and do not follow pattern of humidity change. Still, organic matter of Rendzina from most humid western region has the least favourable HA/FA ratio, while at the driest east and southeast regions content of humin is the greatest.",
publisher = "Technical Inst Bijeljina, Bijeljina",
journal = "Archives for Technical Sciences",
title = "Humus composition of rendzina soils in different environmental conditions of Serbia",
pages = "64-57",
number = "19",
doi = "10.7251/afts.2018.1019.057R"
}

Radmanović, S., Djordjević, A.,& Nikolić, N.. (2018). Humus composition of rendzina soils in different environmental conditions of Serbia. in Archives for Technical Sciences
Technical Inst Bijeljina, Bijeljina.(19), 57-64.
https://doi.org/10.7251/afts.2018.1019.057R

Radmanović S, Djordjević A, Nikolić N. Humus composition of rendzina soils in different environmental conditions of Serbia. in Archives for Technical Sciences. 2018;(19):57-64.
doi:10.7251/afts.2018.1019.057R .

Radmanović, Svjetlana, Djordjević, Aleksandar, Nikolić, Nataša, "Humus composition of rendzina soils in different environmental conditions of Serbia" in Archives for Technical Sciences, no. 19 (2018):57-64,
https://doi.org/10.7251/afts.2018.1019.057R . .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Nikolić, Nataša
AU  - Djordjević, Aleksandar
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4788
AB  - This study examined the impact of climate, altitude and landforms on humic acids (HA) optical properties (E-4/E-6, Delta logK, RF indexes) in Serbian Rendzina soils. HA humification degree of calcareous and decarbonated Rendzinas under natural vegetation (forest and grassland, separately) decreased with altitude increasing. This particular rule was not manifested in arable Rendzinas. HA humification degree in Rendzinas on flat positions (hilltop and footslope) is significantly higher than in Rendzinas on slope sides. Humification degree of HA is the highest in Rendzinas in eastern Serbia (in the vicinity of Negotin), followed by central Serbia (Sumadija) and Srem, southeast and finally, southeast and southwest Serbia. With respect to the climate change foreseen for the end of this century, i.e. increase of precipitation and temperature variance among the regions in Serbia, also an increase in variance of quality of humic acids in Rendzinas on different altitudes and regions can be expected.
PB  - Technical Inst Bijeljina, Bijeljina
T2  - Archives for Technical Sciences
T1  - Humic acids optical properties of rendzina soils in diverse environmental conditions of Serbia
EP  - 70
IS  - 18
SP  - 63
DO  - 10.7251/afts.2018.1018.063R
ER  - 

@article{
author = "Radmanović, Svjetlana and Nikolić, Nataša and Djordjević, Aleksandar",
year = "2018",
abstract = "This study examined the impact of climate, altitude and landforms on humic acids (HA) optical properties (E-4/E-6, Delta logK, RF indexes) in Serbian Rendzina soils. HA humification degree of calcareous and decarbonated Rendzinas under natural vegetation (forest and grassland, separately) decreased with altitude increasing. This particular rule was not manifested in arable Rendzinas. HA humification degree in Rendzinas on flat positions (hilltop and footslope) is significantly higher than in Rendzinas on slope sides. Humification degree of HA is the highest in Rendzinas in eastern Serbia (in the vicinity of Negotin), followed by central Serbia (Sumadija) and Srem, southeast and finally, southeast and southwest Serbia. With respect to the climate change foreseen for the end of this century, i.e. increase of precipitation and temperature variance among the regions in Serbia, also an increase in variance of quality of humic acids in Rendzinas on different altitudes and regions can be expected.",
publisher = "Technical Inst Bijeljina, Bijeljina",
journal = "Archives for Technical Sciences",
title = "Humic acids optical properties of rendzina soils in diverse environmental conditions of Serbia",
pages = "70-63",
number = "18",
doi = "10.7251/afts.2018.1018.063R"
}

Radmanović, S., Nikolić, N.,& Djordjević, A.. (2018). Humic acids optical properties of rendzina soils in diverse environmental conditions of Serbia. in Archives for Technical Sciences
Technical Inst Bijeljina, Bijeljina.(18), 63-70.
https://doi.org/10.7251/afts.2018.1018.063R

Radmanović S, Nikolić N, Djordjević A. Humic acids optical properties of rendzina soils in diverse environmental conditions of Serbia. in Archives for Technical Sciences. 2018;(18):63-70.
doi:10.7251/afts.2018.1018.063R .

Radmanović, Svjetlana, Nikolić, Nataša, Djordjević, Aleksandar, "Humic acids optical properties of rendzina soils in diverse environmental conditions of Serbia" in Archives for Technical Sciences, no. 18 (2018):63-70,
https://doi.org/10.7251/afts.2018.1018.063R . .

TY  - CONF
AU  - Zivotic, Ljubomir
AU  - Golubović, Slađana
AU  - Radmanović, Svjetlana
AU  - Belić, Milivoj
AU  - Đorđević, Aleksandar
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6751
AB  - Land degradation neutrality (LDN) is defined as a state whereby the amount and quality of land
resources necessary to support ecosystem functions and services and enhance food security remain stable or increase within specified temporal and spatial scales. This concept is a part of sustainable development goal 15 of the UN Agenda for Sustainable Development. Target 15.3 aims to combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world by 2030. The achievement of this target is measured through indicator called “Proportion of land that is degraded over total land area”. United Nations Convention to Combat Desertification (UNCCD) endorsed SDG target 15.3 and the concept of land degradation neutrality as a strong vehicle for the implementation of the Convention. Countries are invited to formulate voluntary targets to achieve LDN. UNCCD provide guidance for formulating national voluntary targets and facilitate utilization of the UNCCD indicator framework. Republic of Serbia has ratified Convention in 2007 and actively works on LDN target setting process. This paper aims to present: (a) the basic principles of LDN concept, (b) global datasets provided by UNCCD, (c) SWOT analysis for the country, and (d) to discuss possible national datasets and further activities related to LDN.
Indicator “Proportion of land that is degraded over total land area” is measured by means of three subindicators: land cover, land productivity and soil organic carbon. This indicator framework could be broaden with national indicators by decision of the country. Country has been provided by global data on land cover from European Space Agency (ESA). Land productivity dynamics (LPD) dataset was prepared by Joint Research Centre of the European Commission, while soil organic carbon (SOC) dataset was provided by ISRIC. Watershed boundaries are provided from FAO GAUL network. Net area change as a result of comparison between two periods for land covers change and SOC, while LPD is obtained as a trend for the 15 years period. ESA land cover data are given for the two epochs, around 2000 and 2010. These data indicate the loss of 3,800 ha of forests and their conversion to croplands or shrubs. National datasets on land cover exist but their utilization is constrained with the necessity to have dataset for two period of time and to have regular acquisition of future data which are necessary for further analysis and monitoring.
Land productivity dynamics data indicated that 5% of the Serbian territory has negative trends in land productivity for the period 1998-2013. There are no national data on LPD obtained according to LDN concept. Soil organic carbon for the country indicates average content of 82.2 t/ha. National data on SOC stocks exist in the databases of relevant institutions but the problems in their utilization are related to the fact that they are sometimes very old, rarely geo-referenced, and obtained by various analytical and terrain procedures. Hence, global data on SOC stocks do not present real country situation, while national SOC stocks data should be systematized to be confident. Indicator analysis at watershed level has recognized the watersheds of Great Morava, Tisa, Sava 3 and South Morava and Nisava rivers, as four watersheds which present 50% of degraded areas according to the proposed methodology. These watersheds should be prone to detailed analysis of around 20 potential hotspots are found in the country. LDN baseline is not yet decided on a country level. Global land cover and land productivity dynamics data will be used until we obtain national data for these indicators. SOC national data should be systematized and used instead of global data. Further activities in LDN target setting process are related to the establishment of LDN baseline, analysis of land degradation trends and drivers, and suggestion of possible national voluntary targets and associated measures at the country, local and/or watershed level. The inclusion of national indicators should be further discussed. LDN concept should be strongly lead by the Government of Republic of Serbia. Hence, Serbian UNCCD NAP document should be finalized, adopted by the Government and LDN embedded into the NAP.
PB  - Srpsko društvo za proučavanje zemljišta
C3  - 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia
T1  - Land degradation neutrality in Serbia
EP  - 92
SP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6751
ER  - 

@conference{
author = "Zivotic, Ljubomir and Golubović, Slađana and Radmanović, Svjetlana and Belić, Milivoj and Đorđević, Aleksandar",
year = "2017",
abstract = "Land degradation neutrality (LDN) is defined as a state whereby the amount and quality of land
resources necessary to support ecosystem functions and services and enhance food security remain stable or increase within specified temporal and spatial scales. This concept is a part of sustainable development goal 15 of the UN Agenda for Sustainable Development. Target 15.3 aims to combat desertification, restore degraded land and soil, including land affected by desertification, drought and floods, and strive to achieve a land degradation-neutral world by 2030. The achievement of this target is measured through indicator called “Proportion of land that is degraded over total land area”. United Nations Convention to Combat Desertification (UNCCD) endorsed SDG target 15.3 and the concept of land degradation neutrality as a strong vehicle for the implementation of the Convention. Countries are invited to formulate voluntary targets to achieve LDN. UNCCD provide guidance for formulating national voluntary targets and facilitate utilization of the UNCCD indicator framework. Republic of Serbia has ratified Convention in 2007 and actively works on LDN target setting process. This paper aims to present: (a) the basic principles of LDN concept, (b) global datasets provided by UNCCD, (c) SWOT analysis for the country, and (d) to discuss possible national datasets and further activities related to LDN.
Indicator “Proportion of land that is degraded over total land area” is measured by means of three subindicators: land cover, land productivity and soil organic carbon. This indicator framework could be broaden with national indicators by decision of the country. Country has been provided by global data on land cover from European Space Agency (ESA). Land productivity dynamics (LPD) dataset was prepared by Joint Research Centre of the European Commission, while soil organic carbon (SOC) dataset was provided by ISRIC. Watershed boundaries are provided from FAO GAUL network. Net area change as a result of comparison between two periods for land covers change and SOC, while LPD is obtained as a trend for the 15 years period. ESA land cover data are given for the two epochs, around 2000 and 2010. These data indicate the loss of 3,800 ha of forests and their conversion to croplands or shrubs. National datasets on land cover exist but their utilization is constrained with the necessity to have dataset for two period of time and to have regular acquisition of future data which are necessary for further analysis and monitoring.
Land productivity dynamics data indicated that 5% of the Serbian territory has negative trends in land productivity for the period 1998-2013. There are no national data on LPD obtained according to LDN concept. Soil organic carbon for the country indicates average content of 82.2 t/ha. National data on SOC stocks exist in the databases of relevant institutions but the problems in their utilization are related to the fact that they are sometimes very old, rarely geo-referenced, and obtained by various analytical and terrain procedures. Hence, global data on SOC stocks do not present real country situation, while national SOC stocks data should be systematized to be confident. Indicator analysis at watershed level has recognized the watersheds of Great Morava, Tisa, Sava 3 and South Morava and Nisava rivers, as four watersheds which present 50% of degraded areas according to the proposed methodology. These watersheds should be prone to detailed analysis of around 20 potential hotspots are found in the country. LDN baseline is not yet decided on a country level. Global land cover and land productivity dynamics data will be used until we obtain national data for these indicators. SOC national data should be systematized and used instead of global data. Further activities in LDN target setting process are related to the establishment of LDN baseline, analysis of land degradation trends and drivers, and suggestion of possible national voluntary targets and associated measures at the country, local and/or watershed level. The inclusion of national indicators should be further discussed. LDN concept should be strongly lead by the Government of Republic of Serbia. Hence, Serbian UNCCD NAP document should be finalized, adopted by the Government and LDN embedded into the NAP.",
publisher = "Srpsko društvo za proučavanje zemljišta",
journal = "2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia",
title = "Land degradation neutrality in Serbia",
pages = "92-80",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6751"
}

Zivotic, L., Golubović, S., Radmanović, S., Belić, M.,& Đorđević, A.. (2017). Land degradation neutrality in Serbia. in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia
Srpsko društvo za proučavanje zemljišta., 80-92.
https://hdl.handle.net/21.15107/rcub_agrospace_6751

Zivotic L, Golubović S, Radmanović S, Belić M, Đorđević A. Land degradation neutrality in Serbia. in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia. 2017;:80-92.
https://hdl.handle.net/21.15107/rcub_agrospace_6751 .

Zivotic, Ljubomir, Golubović, Slađana, Radmanović, Svjetlana, Belić, Milivoj, Đorđević, Aleksandar, "Land degradation neutrality in Serbia" in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia (2017):80-92,
https://hdl.handle.net/21.15107/rcub_agrospace_6751 .

TY  - CONF
AU  - Radmanović, Svjetlana
AU  - Životić, Ljubomir
AU  - Nikolić, Nataša
AU  - Đorđević, Aleksandar
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6753
AB  - According to soil classification system used in Serbia (Škorić, Ćirić and Filipovski, 1985) Rendzina is a soil type within the order of automorphic soils and the class of humus-accumulative soils with an Amo-AmoC-C-R profile, which is developed on parent rock containing more than 20% of calcareous material. Rendzinas are divided onto subtypes - according to the parent material: (i) marl, marly limestone and soft limestone, (ii) loess and loess like sediments, (iii) dolomite sand, (iv) moraine; on varieties - according to stadium of evolution: (i) calcareous, (ii) decarbonated, (iii) brunified, (iv) colluvial, and forms - according to texture and coarse fragments content. Throughout the world, the term Rendzina (and Pararendzina) is used to denote soils formed on different calcareous parent material and it generally corresponds with Rendzic Leptosol of the WRB soil classification system. Rendzinas on marl, marly limestone and soft limestone is the most widespread subtype in Serbia, and the aim of this study was to precisely classify it according to the WRB 2015 system. Total of 29 Rendzina soil profiles from different parts of Serbia were studied. Field and laboratory investigations (soil depth, colour, coarse fragments, texture, structure, pH, soil organic carbon, base saturation) were determined using methods recommended by the WRB system (except for base saturation, where BaCl2, pH 8.1, was used instead of NH4OAc, pH 7).
According to soil classification system used in Serbia, from total of 21 soil profiles on soft limestone, 16 were calcareous variety (form: 8 loamy, low or medium skeletal and 1 clay, medium skeletal); 13 decarbonated variety (loamy, low skeletal); and 2 colluvial variety (loamy, low skeletal); and 8 profiles on marl of which 7 were calcareous variety (loamy, low or medium skeletal), and 1 profile was decarbonated variety (loamy, low skeletal). According to WRB 2015 system, investigated Rendzinas were classificated to RSG of Leptosols (12 profiles), Regosols (10 profiles) and Phaeozems (7 profiles). Leptosols include Rendzinas with A-R soil profile, where continuous rock (10 profiles on soft limestone and 2 profiles on marl) starting ≤15-25 cm from the soil surface. For calcareous Rendzina variety, combinations of the principal qualifiers were: Rendzic, Rendzic Calcaric, and Skeletic Calcaric. The decarbonated variety matched the
diagnostic criteria for the Eutric principal qualifier. The supplementary qualifiers for Leptosols were
Loamic or Clayic, Aric and Humic. Renzinas deeper than 25 cm, usually with A-AC-R soil profile, having a mollic diagnostic horizon were classified to RSG of Phaeozems. For calcareous Rendzinas variety, combinations of the principal qualifiers were: Rendzic Calcaric or Rendzic Skeletic Calcaric. The decarbonated Rendzinas variety only matched criteria for the Leptic principal qualifier. Loamic and Aric supplementary qualifiers were added to Phaeozems.
RSG of Regosols includes Rendzinas thicker than 25 cm, usually with A-AC-R soil profile, when
surface horizon does not match diagnostic criteria of a mollic horizon (in slightly crushed samples a
Munsell colour value of ≥3 moist, and ≤ 5 dry, and a chroma of ≥4 moist). Surface horizons were more than 20 cm deep (except for 2 profiles) and had over 0.6% (1.1-4.6%) soil organic carbon. For calcareous Rendzinas variety combinations of the principal qualifiers were: Leptic Calcaric or Leptic Skeletic Calcaric. For Colluvial Rendzinas variety (all calcareous) combination of the principal qualifiers was: Leptic Colluvic Calcaric. Loamic and Aric and/or Humic supplementary qualifiers were used for Regosols. Soil depth caused the first differentiation between Leptosols and Phaeozems, and soil (moist) colour caused the second differentiation between Phaeozems and Regosols. Somewhat brighter soil colour of Rendzina/Regosols is a result of low soil organic matter content and/or high content of calcaric material in the fine earth.
PB  - Srpsko društvo za proučavanje zemljišta
C3  - 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia
T1  - Classification of Rendzina soils in Serbia according to the WRB system
EP  - 9
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6753
ER  - 

@conference{
author = "Radmanović, Svjetlana and Životić, Ljubomir and Nikolić, Nataša and Đorđević, Aleksandar",
year = "2017",
abstract = "According to soil classification system used in Serbia (Škorić, Ćirić and Filipovski, 1985) Rendzina is a soil type within the order of automorphic soils and the class of humus-accumulative soils with an Amo-AmoC-C-R profile, which is developed on parent rock containing more than 20% of calcareous material. Rendzinas are divided onto subtypes - according to the parent material: (i) marl, marly limestone and soft limestone, (ii) loess and loess like sediments, (iii) dolomite sand, (iv) moraine; on varieties - according to stadium of evolution: (i) calcareous, (ii) decarbonated, (iii) brunified, (iv) colluvial, and forms - according to texture and coarse fragments content. Throughout the world, the term Rendzina (and Pararendzina) is used to denote soils formed on different calcareous parent material and it generally corresponds with Rendzic Leptosol of the WRB soil classification system. Rendzinas on marl, marly limestone and soft limestone is the most widespread subtype in Serbia, and the aim of this study was to precisely classify it according to the WRB 2015 system. Total of 29 Rendzina soil profiles from different parts of Serbia were studied. Field and laboratory investigations (soil depth, colour, coarse fragments, texture, structure, pH, soil organic carbon, base saturation) were determined using methods recommended by the WRB system (except for base saturation, where BaCl2, pH 8.1, was used instead of NH4OAc, pH 7).
According to soil classification system used in Serbia, from total of 21 soil profiles on soft limestone, 16 were calcareous variety (form: 8 loamy, low or medium skeletal and 1 clay, medium skeletal); 13 decarbonated variety (loamy, low skeletal); and 2 colluvial variety (loamy, low skeletal); and 8 profiles on marl of which 7 were calcareous variety (loamy, low or medium skeletal), and 1 profile was decarbonated variety (loamy, low skeletal). According to WRB 2015 system, investigated Rendzinas were classificated to RSG of Leptosols (12 profiles), Regosols (10 profiles) and Phaeozems (7 profiles). Leptosols include Rendzinas with A-R soil profile, where continuous rock (10 profiles on soft limestone and 2 profiles on marl) starting ≤15-25 cm from the soil surface. For calcareous Rendzina variety, combinations of the principal qualifiers were: Rendzic, Rendzic Calcaric, and Skeletic Calcaric. The decarbonated variety matched the
diagnostic criteria for the Eutric principal qualifier. The supplementary qualifiers for Leptosols were
Loamic or Clayic, Aric and Humic. Renzinas deeper than 25 cm, usually with A-AC-R soil profile, having a mollic diagnostic horizon were classified to RSG of Phaeozems. For calcareous Rendzinas variety, combinations of the principal qualifiers were: Rendzic Calcaric or Rendzic Skeletic Calcaric. The decarbonated Rendzinas variety only matched criteria for the Leptic principal qualifier. Loamic and Aric supplementary qualifiers were added to Phaeozems.
RSG of Regosols includes Rendzinas thicker than 25 cm, usually with A-AC-R soil profile, when
surface horizon does not match diagnostic criteria of a mollic horizon (in slightly crushed samples a
Munsell colour value of ≥3 moist, and ≤ 5 dry, and a chroma of ≥4 moist). Surface horizons were more than 20 cm deep (except for 2 profiles) and had over 0.6% (1.1-4.6%) soil organic carbon. For calcareous Rendzinas variety combinations of the principal qualifiers were: Leptic Calcaric or Leptic Skeletic Calcaric. For Colluvial Rendzinas variety (all calcareous) combination of the principal qualifiers was: Leptic Colluvic Calcaric. Loamic and Aric and/or Humic supplementary qualifiers were used for Regosols. Soil depth caused the first differentiation between Leptosols and Phaeozems, and soil (moist) colour caused the second differentiation between Phaeozems and Regosols. Somewhat brighter soil colour of Rendzina/Regosols is a result of low soil organic matter content and/or high content of calcaric material in the fine earth.",
publisher = "Srpsko društvo za proučavanje zemljišta",
journal = "2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia",
title = "Classification of Rendzina soils in Serbia according to the WRB system",
pages = "9-1",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6753"
}

Radmanović, S., Životić, L., Nikolić, N.,& Đorđević, A.. (2017). Classification of Rendzina soils in Serbia according to the WRB system. in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia
Srpsko društvo za proučavanje zemljišta., 1-9.
https://hdl.handle.net/21.15107/rcub_agrospace_6753

Radmanović S, Životić L, Nikolić N, Đorđević A. Classification of Rendzina soils in Serbia according to the WRB system. in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia. 2017;:1-9.
https://hdl.handle.net/21.15107/rcub_agrospace_6753 .

Radmanović, Svjetlana, Životić, Ljubomir, Nikolić, Nataša, Đorđević, Aleksandar, "Classification of Rendzina soils in Serbia according to the WRB system" in 2nd International and 14th National Congress of Soil Science Society of Serbia "Solutions and Projections for Sustainable Soil Management", Novi Sad, Serbia (2017):1-9,
https://hdl.handle.net/21.15107/rcub_agrospace_6753 .

TY  - JOUR
AU  - Životić, Ljubomir
AU  - Radmanović, Svjetlana
AU  - Gajić, Boško
AU  - Mrvić, Vesna
AU  - Djordjević, Aleksandar
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4481
AB  - This study describes and classifies the soils of the foot and toe slopes of the Vukan Mountain, Central Serbia, the contact point of two distinct geomorphological units, with a focus on their spatial distribution and their main soil-forming processes. The Vukan Mountain is formed of Jurassic limestones and dolomites, whereas the foot and toe slopes are of fluviatile-colluvial origin. A total of 42 soil profiles were examined. Soil profile locations were determined with respect to elevation differences, accounting for a set of six profiles for every 5-m elevation increase between 175 and 210 m a.s.l. The area is characterized by the dominance of chernic and mollic topsoil horizons and the major part of the area is covered with Phaeozems. Five Reference Soil Groups were found in a very small area. Eleven soil profiles are Chemic Phaeozems, five are Cambic Phaeozems, and twelve are Rendzic Phaeozems. The central part of the study area is characterized by the accumulation of secondary carbonates and Chernozems were identified. The northern part of the study area is covered with Fluvisols, Calcisols, and Leptic Rendzic Phaeozems, whereas Chernic and Cambic Phaeozems and Eutric Cambisols cover the western part of the study area. The differences in the CaCO3 content in the gravels, the differences in the gravel content, and the different lateral and vertical distribution of CaCO3 are strong evidence of surface processes that occurred in the past. The presence of different geological layers and buried horizons suggests fluviatile processes. The spatial distribution of soils is related mainly to parent material occurrence, and colluvial and alluvial processes that occurred in the past. The soil map created in GIS has Reference Soil Group as central unit following Rule 1 for map legend creation, except in the case of Phaeozems, which are present as Phaeozems (Leptic) and Phaeozems (other) following Rule 5. This soil survey with approximately one soil profile per 4 ha has indicated considerable soil heterogeneity in the study area. Detailed surveys are therefore recommended for areas with pronounced heterogeneity of soil-forming factors.
PB  - Elsevier Science Bv, Amsterdam
T2  - Catena
T1  - Classification and spatial distribution of soils in the foot and toe slopes of mountain Vukan, East-Central Serbia
EP  - 83
SP  - 70
VL  - 159
DO  - 10.1016/j.catena.2017.08.003
ER  - 

@article{
author = "Životić, Ljubomir and Radmanović, Svjetlana and Gajić, Boško and Mrvić, Vesna and Djordjević, Aleksandar",
year = "2017",
abstract = "This study describes and classifies the soils of the foot and toe slopes of the Vukan Mountain, Central Serbia, the contact point of two distinct geomorphological units, with a focus on their spatial distribution and their main soil-forming processes. The Vukan Mountain is formed of Jurassic limestones and dolomites, whereas the foot and toe slopes are of fluviatile-colluvial origin. A total of 42 soil profiles were examined. Soil profile locations were determined with respect to elevation differences, accounting for a set of six profiles for every 5-m elevation increase between 175 and 210 m a.s.l. The area is characterized by the dominance of chernic and mollic topsoil horizons and the major part of the area is covered with Phaeozems. Five Reference Soil Groups were found in a very small area. Eleven soil profiles are Chemic Phaeozems, five are Cambic Phaeozems, and twelve are Rendzic Phaeozems. The central part of the study area is characterized by the accumulation of secondary carbonates and Chernozems were identified. The northern part of the study area is covered with Fluvisols, Calcisols, and Leptic Rendzic Phaeozems, whereas Chernic and Cambic Phaeozems and Eutric Cambisols cover the western part of the study area. The differences in the CaCO3 content in the gravels, the differences in the gravel content, and the different lateral and vertical distribution of CaCO3 are strong evidence of surface processes that occurred in the past. The presence of different geological layers and buried horizons suggests fluviatile processes. The spatial distribution of soils is related mainly to parent material occurrence, and colluvial and alluvial processes that occurred in the past. The soil map created in GIS has Reference Soil Group as central unit following Rule 1 for map legend creation, except in the case of Phaeozems, which are present as Phaeozems (Leptic) and Phaeozems (other) following Rule 5. This soil survey with approximately one soil profile per 4 ha has indicated considerable soil heterogeneity in the study area. Detailed surveys are therefore recommended for areas with pronounced heterogeneity of soil-forming factors.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Catena",
title = "Classification and spatial distribution of soils in the foot and toe slopes of mountain Vukan, East-Central Serbia",
pages = "83-70",
volume = "159",
doi = "10.1016/j.catena.2017.08.003"
}

Životić, L., Radmanović, S., Gajić, B., Mrvić, V.,& Djordjević, A.. (2017). Classification and spatial distribution of soils in the foot and toe slopes of mountain Vukan, East-Central Serbia. in Catena
Elsevier Science Bv, Amsterdam., 159, 70-83.
https://doi.org/10.1016/j.catena.2017.08.003

Životić L, Radmanović S, Gajić B, Mrvić V, Djordjević A. Classification and spatial distribution of soils in the foot and toe slopes of mountain Vukan, East-Central Serbia. in Catena. 2017;159:70-83.
doi:10.1016/j.catena.2017.08.003 .

Životić, Ljubomir, Radmanović, Svjetlana, Gajić, Boško, Mrvić, Vesna, Djordjević, Aleksandar, "Classification and spatial distribution of soils in the foot and toe slopes of mountain Vukan, East-Central Serbia" in Catena, 159 (2017):70-83,
https://doi.org/10.1016/j.catena.2017.08.003 . .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Djordjević, Aleksandar
AU  - Nikolić, Nataša
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3727
AB  - Organic matter in Serbian Rendzina soils dependence on altitude and geographic regions was investigated. There was no regular dynamics of carbon and nitrogen content nor in C/N ratio, probably because of slight climatic variation among altitudes and regions, thus negligible differences in vegetation, organic litter and decomposition dynamics. Predicted climatic changes, uneven for regions, will exert a complex influence on soil C and N storage. These results should be used as a base for future monitoring of C and N content in Serbian Rendzina soils and their dependence on climate.
PB  - Technical Inst Bijeljina, Bijeljina
T2  - Archives for Technical Sciences
T1  - Influence of environmental conditions on carbon and nitrogen content in Serbian rendzina soils
EP  - 72
IS  - 12
SP  - 67
DO  - 10.7251/afts.2015.0712.067R
ER  - 

@article{
author = "Radmanović, Svjetlana and Djordjević, Aleksandar and Nikolić, Nataša",
year = "2015",
abstract = "Organic matter in Serbian Rendzina soils dependence on altitude and geographic regions was investigated. There was no regular dynamics of carbon and nitrogen content nor in C/N ratio, probably because of slight climatic variation among altitudes and regions, thus negligible differences in vegetation, organic litter and decomposition dynamics. Predicted climatic changes, uneven for regions, will exert a complex influence on soil C and N storage. These results should be used as a base for future monitoring of C and N content in Serbian Rendzina soils and their dependence on climate.",
publisher = "Technical Inst Bijeljina, Bijeljina",
journal = "Archives for Technical Sciences",
title = "Influence of environmental conditions on carbon and nitrogen content in Serbian rendzina soils",
pages = "72-67",
number = "12",
doi = "10.7251/afts.2015.0712.067R"
}

Radmanović, S., Djordjević, A.,& Nikolić, N.. (2015). Influence of environmental conditions on carbon and nitrogen content in Serbian rendzina soils. in Archives for Technical Sciences
Technical Inst Bijeljina, Bijeljina.(12), 67-72.
https://doi.org/10.7251/afts.2015.0712.067R

Radmanović S, Djordjević A, Nikolić N. Influence of environmental conditions on carbon and nitrogen content in Serbian rendzina soils. in Archives for Technical Sciences. 2015;(12):67-72.
doi:10.7251/afts.2015.0712.067R .

Radmanović, Svjetlana, Djordjević, Aleksandar, Nikolić, Nataša, "Influence of environmental conditions on carbon and nitrogen content in Serbian rendzina soils" in Archives for Technical Sciences, no. 12 (2015):67-72,
https://doi.org/10.7251/afts.2015.0712.067R . .

TY  - JOUR
AU  - Petrović, Petar G.
AU  - Radmanović, Svjetlana
AU  - Djordjević, Aleksandar
AU  - Životić, Ljubomir
AU  - Lalević, Blažo
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3860
AB  - This paper presents peat soil organic matter characteristics at Divčibare Mountain (950 m a.s.l, mountain climate). Excessive wetting is caused by groundwater and floods, and plant litter originates from hydrophilic vegetation. An investigation was aimed at determining the correlation between organic matter characteristics (humification degree, stability and bioavailability) with factors of soil formation and the most important physico-chemical characteristics of peat. Peat is mild acid and has a low base saturation. The content of organic matter is higher than 60% at depth of 40-80 cm, and higher than 40% at depths of 0-40 and 80-105 cm, respectively. Investigated peat had sapric characteristics. A content of humic acids in total organic matter indicates its unequal humification degree within profile, moderate to high at depth of 0-40 cm, low at 40-80-cm depth, and very low beneath 80 cm. A value of Ch/Cf ratio indicates high humus stability up to 80 cm where it has humate-type humus, while below 80 cm humus is the humatefulvate type. A low content of fractions separated with 0.1N cold H2SO4, and cold and hot water, points out a low bioavailability of organic matter through whole soil profile. UV-Vis indices indicate a low humification degree of humic acids (increased to 80-cm depth), and a very low humification degree of fulvic acids (variable, the highest at 60-80-cm depth). Overall results indicate that particle size of mineral fraction, soil reaction, and cation exchange capacity had no significant impact on organic matter characteristics. Soil moisture content, that is alterations of oxido-reductive conditions throughout soil profile had the crucial impact on peat organic matter characteristics.
AB  - U radu su prikazane karakteristike organske materije tresetišta na Divčibarama (950 m nadmorske visine, planinska klima). Suficitno vlaženje je uzrokovano podzemnom i poplavnom vodom, a biljni ostaci uglavnom potiču od hidrofilnih zeljastih biljaka. Cilj ispitivanja bio je utvrđivanje zavisnosti stanja organske materije (stepena humificiranosti, stabilnosti ili biodostupnosti) od pedogenetskih faktora i najvažnijih fizičkih i hemijskih osobina treseta. Treset je kisele reakcije, veoma slabo zasićen baznim katjonima. Sadržaj organske materije je >60% na dubini 40-80 cm, i >40% na 0-40 i 80-105 cm. Ispitivani treset je imao saprični karakter (stepen razloženosti organske materije >76%). Učešće huminskih kiselina u ukupnoj organskoj materiji pokazuje njen nejednak stepen humificiranosti po dubini profila, srednji do visok na 0-40 cm, nizak na 40-80 cm, a ispod 80 cm veoma nizak. Vrednosti odnosa Ch/Cf ukazuju na visoku stabilnost humusa do dubine od 80 cm gde je on humatnog, a ispod 80 cm humatno-fulvatnog tipa. Nizak sadržaj frakcija izdvojenih hladnom 0,1N H2SO4, i hladnom i vrućom H2O, ukazuje na malu biodostupnost (razgradljivost) organske materije po celoj dubini profila. UV-Vis indeksi su ukazali na niži stepen humificiranosti huminskih (povećavao do dubine 80 cm), i veoma nizak fulvo kiselina (promenljiv, najveći na 60-80 cm). Na osnovu primenjenih metoda istraživanja i statističke analize rezultata bilo je moguće zaključiti da mehanički sastav mineralne faze, reakcija zemljišta i stanje adsorptivnog kompleksa zemljišta nisu značajno uticali na stanje organske materije. Presudan uticaj na stanje organske materije ovog treseta imala je vlažnost zemljišta, odnosno promene oksido-redukcionih uslova po dubini profila.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - The content and UV-Vis absorbances of bog peat organic matter fractions (Divčivare, Serbia)
T1  - Sadržaj i UV-Vis apsorbance frakcija organske materije barskog treseta (Divčibare, Srbija)
EP  - 299
IS  - 3
SP  - 287
VL  - 60
DO  - 10.2298/jas1503287p
ER  - 

@article{
author = "Petrović, Petar G. and Radmanović, Svjetlana and Djordjević, Aleksandar and Životić, Ljubomir and Lalević, Blažo",
year = "2015",
abstract = "This paper presents peat soil organic matter characteristics at Divčibare Mountain (950 m a.s.l, mountain climate). Excessive wetting is caused by groundwater and floods, and plant litter originates from hydrophilic vegetation. An investigation was aimed at determining the correlation between organic matter characteristics (humification degree, stability and bioavailability) with factors of soil formation and the most important physico-chemical characteristics of peat. Peat is mild acid and has a low base saturation. The content of organic matter is higher than 60% at depth of 40-80 cm, and higher than 40% at depths of 0-40 and 80-105 cm, respectively. Investigated peat had sapric characteristics. A content of humic acids in total organic matter indicates its unequal humification degree within profile, moderate to high at depth of 0-40 cm, low at 40-80-cm depth, and very low beneath 80 cm. A value of Ch/Cf ratio indicates high humus stability up to 80 cm where it has humate-type humus, while below 80 cm humus is the humatefulvate type. A low content of fractions separated with 0.1N cold H2SO4, and cold and hot water, points out a low bioavailability of organic matter through whole soil profile. UV-Vis indices indicate a low humification degree of humic acids (increased to 80-cm depth), and a very low humification degree of fulvic acids (variable, the highest at 60-80-cm depth). Overall results indicate that particle size of mineral fraction, soil reaction, and cation exchange capacity had no significant impact on organic matter characteristics. Soil moisture content, that is alterations of oxido-reductive conditions throughout soil profile had the crucial impact on peat organic matter characteristics., U radu su prikazane karakteristike organske materije tresetišta na Divčibarama (950 m nadmorske visine, planinska klima). Suficitno vlaženje je uzrokovano podzemnom i poplavnom vodom, a biljni ostaci uglavnom potiču od hidrofilnih zeljastih biljaka. Cilj ispitivanja bio je utvrđivanje zavisnosti stanja organske materije (stepena humificiranosti, stabilnosti ili biodostupnosti) od pedogenetskih faktora i najvažnijih fizičkih i hemijskih osobina treseta. Treset je kisele reakcije, veoma slabo zasićen baznim katjonima. Sadržaj organske materije je >60% na dubini 40-80 cm, i >40% na 0-40 i 80-105 cm. Ispitivani treset je imao saprični karakter (stepen razloženosti organske materije >76%). Učešće huminskih kiselina u ukupnoj organskoj materiji pokazuje njen nejednak stepen humificiranosti po dubini profila, srednji do visok na 0-40 cm, nizak na 40-80 cm, a ispod 80 cm veoma nizak. Vrednosti odnosa Ch/Cf ukazuju na visoku stabilnost humusa do dubine od 80 cm gde je on humatnog, a ispod 80 cm humatno-fulvatnog tipa. Nizak sadržaj frakcija izdvojenih hladnom 0,1N H2SO4, i hladnom i vrućom H2O, ukazuje na malu biodostupnost (razgradljivost) organske materije po celoj dubini profila. UV-Vis indeksi su ukazali na niži stepen humificiranosti huminskih (povećavao do dubine 80 cm), i veoma nizak fulvo kiselina (promenljiv, najveći na 60-80 cm). Na osnovu primenjenih metoda istraživanja i statističke analize rezultata bilo je moguće zaključiti da mehanički sastav mineralne faze, reakcija zemljišta i stanje adsorptivnog kompleksa zemljišta nisu značajno uticali na stanje organske materije. Presudan uticaj na stanje organske materije ovog treseta imala je vlažnost zemljišta, odnosno promene oksido-redukcionih uslova po dubini profila.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "The content and UV-Vis absorbances of bog peat organic matter fractions (Divčivare, Serbia), Sadržaj i UV-Vis apsorbance frakcija organske materije barskog treseta (Divčibare, Srbija)",
pages = "299-287",
number = "3",
volume = "60",
doi = "10.2298/jas1503287p"
}

Petrović, P. G., Radmanović, S., Djordjević, A., Životić, L.,& Lalević, B.. (2015). The content and UV-Vis absorbances of bog peat organic matter fractions (Divčivare, Serbia). in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 60(3), 287-299.
https://doi.org/10.2298/jas1503287p

Petrović PG, Radmanović S, Djordjević A, Životić L, Lalević B. The content and UV-Vis absorbances of bog peat organic matter fractions (Divčivare, Serbia). in Journal of Agricultural Sciences (Belgrade). 2015;60(3):287-299.
doi:10.2298/jas1503287p .

Petrović, Petar G., Radmanović, Svjetlana, Djordjević, Aleksandar, Životić, Ljubomir, Lalević, Blažo, "The content and UV-Vis absorbances of bog peat organic matter fractions (Divčivare, Serbia)" in Journal of Agricultural Sciences (Belgrade), 60, no. 3 (2015):287-299,
https://doi.org/10.2298/jas1503287p . .

TY  - JOUR
AU  - Radmanović, Svjetlana
AU  - Djordjević, Aleksandar
AU  - Nikolić, Nataša S.
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3911
AB  - The humification degrees of humic acids extracted from calcareous and decarbonated Rendzinas under different land use were characterized upon their optical properties, to evaluate the influence of carbonate leaching (decarbonation) and different land uses. Decarbonation influenced the humification degree of humic acids positively. Base leaching and acidification of decarbonated Rendzinas led to a decrease in humification degree of humic acids. In calcareous Rendzinas, the humification degree of humic acids was in descending order: grassland>arable land>forest land, and in decarbonated Rendzinas: arable land>grassland>forest land. The humification degree of humic acids was higher in the calcareous forest and grassland Rendzinas compared to decarbonated Rendzinas, analogously in decarbonated arable land compared to calcareous arable land Rendzinas. Differences in the humification degree of humic acids among various land uses that emerged between calcareous and decarbonated Rendzinas indicate the dominant influence of soil chemical characteristics (carbonate content and pH value) compared with the quantity and quality of the organic litter input.
AB  - Prema domaćoj klasifikaciji, rendzine su zemljišta sa moličnim A horizontom koji postepeno prelazi u rastresiti karbonatni C horizont. Primarno su karbonatna, i njihova evolucija teče u pravcu izluživanja pa zatim posmeđivanja. Najčešće su pod prirodnom šumskom i travnom vegetacijom, manji deo njih se obraduje. U ovom radu su ispitivane optičke osobine huminskih kiselina zemljišta tipa rendzina, a istraživanja su imala za cilj praćenje posledica izluživanja i promene načina korišćenja ovog tipa zemljišta u Srbiji na stepen humificiranosti huminskih kiselina. Priprema rastvora huminskih kiselina za VIS spektroskopiju izvedena je metodom Kononove. Karakterizacija optičkih osobina huminskih kiselina je data preko optičkih indeksa: E4/E6, ΔlogA i RF. Rezultati su obrađeni u programu StatSoft, Inc. Statistica, Version 8. Proces izluživanja je pozitivno uticao na stepen humificiranosti huminskih kiselina u rendzinama (najveći je pri neutralnoj reakciji). Dalja debazifikacija i acidifikacija izluženih rendzina uticala je negativno, odnosno dovela do smanjenja stepena humificiranosti huminskih kiselina. Stepen humificiranosti huminskih kiselina u karbonatnim rendzinama se kretao travnjak>njiva>šuma, a u izluženim rendzinama njiva>travnjak>šuma. Huminske kiseline karbonatnih rendzina pod šumom i travnjakom su imale veći stepen humificiranosti u poredenju sa izluženim rendzinama pod šumom i travnjakom. U izluženim rendzinama pod njivom stepen humificiranosti huminskih kiselina je bio veći nego u karbonatnim rendzinama pod njivom. Razlike u stepenu humificiranosti huminskih kiselina prema načinu korišćenja koje su se pojavile između karbonatnih i izluženih rendzina ukazuju na dominantan uticaj hemijskih karakteristika zemljišta na osobine huminskih kiselina u poredenju sa količinom i kvalitetom organskih ostataka koji dospevaju u zemljište.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd
T2  - Journal of Agricultural Sciences (Belgrade)
T1  - Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use
T1  - Uticaj procesa izluživanja i načina korišćenja rendzina na stepen humificiranosti huminskih kiselina
EP  - 453
IS  - 4
SP  - 443
VL  - 60
DO  - 10.2298/JAS1504443R
ER  - 

@article{
author = "Radmanović, Svjetlana and Djordjević, Aleksandar and Nikolić, Nataša S.",
year = "2015",
abstract = "The humification degrees of humic acids extracted from calcareous and decarbonated Rendzinas under different land use were characterized upon their optical properties, to evaluate the influence of carbonate leaching (decarbonation) and different land uses. Decarbonation influenced the humification degree of humic acids positively. Base leaching and acidification of decarbonated Rendzinas led to a decrease in humification degree of humic acids. In calcareous Rendzinas, the humification degree of humic acids was in descending order: grassland>arable land>forest land, and in decarbonated Rendzinas: arable land>grassland>forest land. The humification degree of humic acids was higher in the calcareous forest and grassland Rendzinas compared to decarbonated Rendzinas, analogously in decarbonated arable land compared to calcareous arable land Rendzinas. Differences in the humification degree of humic acids among various land uses that emerged between calcareous and decarbonated Rendzinas indicate the dominant influence of soil chemical characteristics (carbonate content and pH value) compared with the quantity and quality of the organic litter input., Prema domaćoj klasifikaciji, rendzine su zemljišta sa moličnim A horizontom koji postepeno prelazi u rastresiti karbonatni C horizont. Primarno su karbonatna, i njihova evolucija teče u pravcu izluživanja pa zatim posmeđivanja. Najčešće su pod prirodnom šumskom i travnom vegetacijom, manji deo njih se obraduje. U ovom radu su ispitivane optičke osobine huminskih kiselina zemljišta tipa rendzina, a istraživanja su imala za cilj praćenje posledica izluživanja i promene načina korišćenja ovog tipa zemljišta u Srbiji na stepen humificiranosti huminskih kiselina. Priprema rastvora huminskih kiselina za VIS spektroskopiju izvedena je metodom Kononove. Karakterizacija optičkih osobina huminskih kiselina je data preko optičkih indeksa: E4/E6, ΔlogA i RF. Rezultati su obrađeni u programu StatSoft, Inc. Statistica, Version 8. Proces izluživanja je pozitivno uticao na stepen humificiranosti huminskih kiselina u rendzinama (najveći je pri neutralnoj reakciji). Dalja debazifikacija i acidifikacija izluženih rendzina uticala je negativno, odnosno dovela do smanjenja stepena humificiranosti huminskih kiselina. Stepen humificiranosti huminskih kiselina u karbonatnim rendzinama se kretao travnjak>njiva>šuma, a u izluženim rendzinama njiva>travnjak>šuma. Huminske kiseline karbonatnih rendzina pod šumom i travnjakom su imale veći stepen humificiranosti u poredenju sa izluženim rendzinama pod šumom i travnjakom. U izluženim rendzinama pod njivom stepen humificiranosti huminskih kiselina je bio veći nego u karbonatnim rendzinama pod njivom. Razlike u stepenu humificiranosti huminskih kiselina prema načinu korišćenja koje su se pojavile između karbonatnih i izluženih rendzina ukazuju na dominantan uticaj hemijskih karakteristika zemljišta na osobine huminskih kiselina u poredenju sa količinom i kvalitetom organskih ostataka koji dospevaju u zemljište.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd",
journal = "Journal of Agricultural Sciences (Belgrade)",
title = "Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use, Uticaj procesa izluživanja i načina korišćenja rendzina na stepen humificiranosti huminskih kiselina",
pages = "453-443",
number = "4",
volume = "60",
doi = "10.2298/JAS1504443R"
}

Radmanović, S., Djordjević, A.,& Nikolić, N. S.. (2015). Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use. in Journal of Agricultural Sciences (Belgrade)
Univerzitet u Beogradu - Poljoprivredni fakultet, Beograd., 60(4), 443-453.
https://doi.org/10.2298/JAS1504443R

Radmanović S, Djordjević A, Nikolić NS. Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use. in Journal of Agricultural Sciences (Belgrade). 2015;60(4):443-453.
doi:10.2298/JAS1504443R .

Radmanović, Svjetlana, Djordjević, Aleksandar, Nikolić, Nataša S., "Humification degree of Rendzina soil humic acids influenced by carbonate leaching and land use" in Journal of Agricultural Sciences (Belgrade), 60, no. 4 (2015):443-453,
https://doi.org/10.2298/JAS1504443R . .

TY  - JOUR
AU  - Dugonjić, Mladen
AU  - Radmanović, Svjetlana
AU  - Djordjević, Aleksandar
AU  - Tomić, Zorica
AU  - Nikolić, Nataša
AU  - Tanasić, Ljiljana
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3938
AB  - Water holding capacities and saturated hydraulic conductivity of Planosols in south Mačva and Pocerina (Serbia) were compared to assess how different types of land use (forest, arable and grassland) influence soils endangered by stagnating water. These changes came from decrease of total porosity and changes in pores size distribution in arable and grass land compared to forest land. Changes of water characteristics of arable and grassland Planosols compared to forest Planosols were statistically most significant in illuvial horizon Btg (absence of root network and fauna activity). It is important to emphasize: (i) surface A horizon of arable and grass land compared to forest showed insignificant increase of plant available water and significant decrease of saturated hydraulic conductivity (ii) significant decrease of saturation and macro porosity increased the risk of oxygen deficiency in Planosols in wet periods of year in this order: arable land > grassland > forest.
AB  - Cilj rada je utvrđivanje promena u vodnim kapacitetima i vodopropusnosti planosola na području Mačve i Pocerine zbog pretvaranja šuma u travnjake i njive. Promena načina korišćenja značajno je uticala na vodne kapacitete, ali ne i na vodopropusnost. Generalno u poređenju sa šumama, u njivama i travnjacima je došlo do smanjenja MVK i povećanja vrednosti PVK, LVK i VV. Navedene promene su posledica smanjenja ukupne poroznosti i promene diferencijalne poroznosti. Promene u njivama i travnjacima su najznačajnije u Btg horizontu (odustvo korenovog sistema i faune), zatim u A horizontu (smanjenje korenovog sistema, aktivnosti faune i sadržaja humusa), a najmanje u Eg horizontu (manja promena poroznosti zbog nestrukturnosti). Sa agroekološkog aspekta je važno istaći da u A horizontu njiva i travnjaka u poređenju sa šumama povećanje KPV i smanjenje SHC nije značajno; značajno smanjenje MVK i makroporoznosti povećava rizik od nedostatka kiseonika u vlažnom delu godine ovim redom: njive > travnjaci > šume.
PB  - Institut za ratarstvo i povrtarstvo, Novi Sad
T2  - Ratarstvo i povrtarstvo
T1  - Impact of land use on water characteristics of Planosols (south Mačva and Pocerina, Serbia)
T1  - Uticaj načina korišćenja na vodne karakteristike planosola (južna Mačva i Pocerina, Srbija)
EP  - 60
IS  - 2
SP  - 52
VL  - 52
DO  - 10.5937/ratpov52-7669
ER  - 

@article{
author = "Dugonjić, Mladen and Radmanović, Svjetlana and Djordjević, Aleksandar and Tomić, Zorica and Nikolić, Nataša and Tanasić, Ljiljana",
year = "2015",
abstract = "Water holding capacities and saturated hydraulic conductivity of Planosols in south Mačva and Pocerina (Serbia) were compared to assess how different types of land use (forest, arable and grassland) influence soils endangered by stagnating water. These changes came from decrease of total porosity and changes in pores size distribution in arable and grass land compared to forest land. Changes of water characteristics of arable and grassland Planosols compared to forest Planosols were statistically most significant in illuvial horizon Btg (absence of root network and fauna activity). It is important to emphasize: (i) surface A horizon of arable and grass land compared to forest showed insignificant increase of plant available water and significant decrease of saturated hydraulic conductivity (ii) significant decrease of saturation and macro porosity increased the risk of oxygen deficiency in Planosols in wet periods of year in this order: arable land > grassland > forest., Cilj rada je utvrđivanje promena u vodnim kapacitetima i vodopropusnosti planosola na području Mačve i Pocerine zbog pretvaranja šuma u travnjake i njive. Promena načina korišćenja značajno je uticala na vodne kapacitete, ali ne i na vodopropusnost. Generalno u poređenju sa šumama, u njivama i travnjacima je došlo do smanjenja MVK i povećanja vrednosti PVK, LVK i VV. Navedene promene su posledica smanjenja ukupne poroznosti i promene diferencijalne poroznosti. Promene u njivama i travnjacima su najznačajnije u Btg horizontu (odustvo korenovog sistema i faune), zatim u A horizontu (smanjenje korenovog sistema, aktivnosti faune i sadržaja humusa), a najmanje u Eg horizontu (manja promena poroznosti zbog nestrukturnosti). Sa agroekološkog aspekta je važno istaći da u A horizontu njiva i travnjaka u poređenju sa šumama povećanje KPV i smanjenje SHC nije značajno; značajno smanjenje MVK i makroporoznosti povećava rizik od nedostatka kiseonika u vlažnom delu godine ovim redom: njive > travnjaci > šume.",
publisher = "Institut za ratarstvo i povrtarstvo, Novi Sad",
journal = "Ratarstvo i povrtarstvo",
title = "Impact of land use on water characteristics of Planosols (south Mačva and Pocerina, Serbia), Uticaj načina korišćenja na vodne karakteristike planosola (južna Mačva i Pocerina, Srbija)",
pages = "60-52",
number = "2",
volume = "52",
doi = "10.5937/ratpov52-7669"
}

Dugonjić, M., Radmanović, S., Djordjević, A., Tomić, Z., Nikolić, N.,& Tanasić, L.. (2015). Impact of land use on water characteristics of Planosols (south Mačva and Pocerina, Serbia). in Ratarstvo i povrtarstvo
Institut za ratarstvo i povrtarstvo, Novi Sad., 52(2), 52-60.
https://doi.org/10.5937/ratpov52-7669

Dugonjić M, Radmanović S, Djordjević A, Tomić Z, Nikolić N, Tanasić L. Impact of land use on water characteristics of Planosols (south Mačva and Pocerina, Serbia). in Ratarstvo i povrtarstvo. 2015;52(2):52-60.
doi:10.5937/ratpov52-7669 .

Dugonjić, Mladen, Radmanović, Svjetlana, Djordjević, Aleksandar, Tomić, Zorica, Nikolić, Nataša, Tanasić, Ljiljana, "Impact of land use on water characteristics of Planosols (south Mačva and Pocerina, Serbia)" in Ratarstvo i povrtarstvo, 52, no. 2 (2015):52-60,
https://doi.org/10.5937/ratpov52-7669 . .

TY  - JOUR
AU  - Lilić, J.
AU  - Cupać, Svjetlana
AU  - Lalević, Blažo
AU  - Andrić, Velibor
AU  - Gajić-Kvascev, M.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3392
AB  - To gain a better knowledge of mining areas and potential remediation processes, some characteristics (morphological, physical, chemical and microbiological) of soils formed on open-pit Cu mine waste (OPW) and Cu post-flotation tailings (PFT) dumps were investigated. Soil profiles and surface samples were studied. In general, the investigated soils are characterized by large proportion of coarse soil particles, degraded structure, low humus content, low pH, high As and Cu concentrations, and low soil microbial activity. In all investigated profiles there is no recognizable topsoil layer containing in situ formed humus probably due to soil age, lack of plant cover and organic litter, as well as other unfavorable soil conditions. The specificity of investigated soils is an irregular distribution of some soil characteristics (porosity, humus content, microbiological activity) over depth, which is a result of their technogenic origin. By establishing correlations between the studied surface sample parameters, using principal component analysis (PCA), poorer aggregate properties of PFT than of OPW soils were found, resulting most likely from aggressive mining, i.e., flotation processes. Both OPW and PFT soils compared with control natural soils are characterized by lower clay and humus content, and poorer aggregate properties.
PB  - Springer International Publishing Ag, Cham
T2  - Journal of Soil Science and Plant Nutrition
T1  - Pedological characteristics of open-pit Cu wastes and post-flotation tailings (Bor, Serbia)
EP  - 175
IS  - 1
SP  - 161
VL  - 14
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3392
ER  - 

@article{
author = "Lilić, J. and Cupać, Svjetlana and Lalević, Blažo and Andrić, Velibor and Gajić-Kvascev, M.",
year = "2014",
abstract = "To gain a better knowledge of mining areas and potential remediation processes, some characteristics (morphological, physical, chemical and microbiological) of soils formed on open-pit Cu mine waste (OPW) and Cu post-flotation tailings (PFT) dumps were investigated. Soil profiles and surface samples were studied. In general, the investigated soils are characterized by large proportion of coarse soil particles, degraded structure, low humus content, low pH, high As and Cu concentrations, and low soil microbial activity. In all investigated profiles there is no recognizable topsoil layer containing in situ formed humus probably due to soil age, lack of plant cover and organic litter, as well as other unfavorable soil conditions. The specificity of investigated soils is an irregular distribution of some soil characteristics (porosity, humus content, microbiological activity) over depth, which is a result of their technogenic origin. By establishing correlations between the studied surface sample parameters, using principal component analysis (PCA), poorer aggregate properties of PFT than of OPW soils were found, resulting most likely from aggressive mining, i.e., flotation processes. Both OPW and PFT soils compared with control natural soils are characterized by lower clay and humus content, and poorer aggregate properties.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Journal of Soil Science and Plant Nutrition",
title = "Pedological characteristics of open-pit Cu wastes and post-flotation tailings (Bor, Serbia)",
pages = "175-161",
number = "1",
volume = "14",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3392"
}

Lilić, J., Cupać, S., Lalević, B., Andrić, V.,& Gajić-Kvascev, M.. (2014). Pedological characteristics of open-pit Cu wastes and post-flotation tailings (Bor, Serbia). in Journal of Soil Science and Plant Nutrition
Springer International Publishing Ag, Cham., 14(1), 161-175.
https://hdl.handle.net/21.15107/rcub_agrospace_3392

Lilić J, Cupać S, Lalević B, Andrić V, Gajić-Kvascev M. Pedological characteristics of open-pit Cu wastes and post-flotation tailings (Bor, Serbia). in Journal of Soil Science and Plant Nutrition. 2014;14(1):161-175.
https://hdl.handle.net/21.15107/rcub_agrospace_3392 .

Lilić, J., Cupać, Svjetlana, Lalević, Blažo, Andrić, Velibor, Gajić-Kvascev, M., "Pedological characteristics of open-pit Cu wastes and post-flotation tailings (Bor, Serbia)" in Journal of Soil Science and Plant Nutrition, 14, no. 1 (2014):161-175,
https://hdl.handle.net/21.15107/rcub_agrospace_3392 .