TY  - JOUR
AU  - Sarić-Krsmanović, Marija
AU  - Tojić, Teodora
AU  - Gajić Umiljendić, Jelena
AU  - Đorđević, Tijana
AU  - Đurović-Pejčev, Rada
AU  - Radivojević, Ljiljana
AU  - Božić, Dragana
AU  - Vrbničanin, Sava
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6369
AB  - This study focused on characterizing chemically and evaluating in vitro allelopathic and bioherbicidal potential of secondary metabolites extracted from the stem of Cuscuta campestris in seed germination, early seedling growth and early plant growth of Amaranthus retroflexus and Portulaca oleracea. The combined effects of stem extract and a reduced dose of herbicide metribuzin were also examined. Plant extract contained 17 phenolic compounds and the most abundant phenols were flavonoids: quercetin, (+)-catechin, daidzin, luteolin, and rutin. The seeds of P. oleracea were less sensitive than the seeds of A. retroflexus. The seed bioassay confirmed the inhibitory effect of stem extract on germination and early growth of both weed seedlings at concentrations of 0.75 % and 1 %, and a minor inhibitory effect in the plant bioassay. On the other hand, a synergy of C. campestris stem extract and metribuzin was revealed, as their combination achieved better results in the control of both weed species. Based on obtained data C. campestris stem extract could be a potential source of natural-based weed control molecules. © 2023 Wiley-VHCA AG, Zurich, Switzerland.
T2  - Chemistry and Biodiversity
T2  - Chemistry and Biodiversity
T1  - Phytochemical Investigation of Cuscuta campestris Yunck. Stem Extract and Evaluation of Its Bioherbicidal Effect on Amaranthus retroflexus L. and Portulaca oleracea L
DO  - 10.1002/cbdv.202300270
ER  - 

@article{
author = "Sarić-Krsmanović, Marija and Tojić, Teodora and Gajić Umiljendić, Jelena and Đorđević, Tijana and Đurović-Pejčev, Rada and Radivojević, Ljiljana and Božić, Dragana and Vrbničanin, Sava",
year = "2023",
abstract = "This study focused on characterizing chemically and evaluating in vitro allelopathic and bioherbicidal potential of secondary metabolites extracted from the stem of Cuscuta campestris in seed germination, early seedling growth and early plant growth of Amaranthus retroflexus and Portulaca oleracea. The combined effects of stem extract and a reduced dose of herbicide metribuzin were also examined. Plant extract contained 17 phenolic compounds and the most abundant phenols were flavonoids: quercetin, (+)-catechin, daidzin, luteolin, and rutin. The seeds of P. oleracea were less sensitive than the seeds of A. retroflexus. The seed bioassay confirmed the inhibitory effect of stem extract on germination and early growth of both weed seedlings at concentrations of 0.75 % and 1 %, and a minor inhibitory effect in the plant bioassay. On the other hand, a synergy of C. campestris stem extract and metribuzin was revealed, as their combination achieved better results in the control of both weed species. Based on obtained data C. campestris stem extract could be a potential source of natural-based weed control molecules. © 2023 Wiley-VHCA AG, Zurich, Switzerland.",
journal = "Chemistry and Biodiversity, Chemistry and Biodiversity",
title = "Phytochemical Investigation of Cuscuta campestris Yunck. Stem Extract and Evaluation of Its Bioherbicidal Effect on Amaranthus retroflexus L. and Portulaca oleracea L",
doi = "10.1002/cbdv.202300270"
}

Sarić-Krsmanović, M., Tojić, T., Gajić Umiljendić, J., Đorđević, T., Đurović-Pejčev, R., Radivojević, L., Božić, D.,& Vrbničanin, S.. (2023). Phytochemical Investigation of Cuscuta campestris Yunck. Stem Extract and Evaluation of Its Bioherbicidal Effect on Amaranthus retroflexus L. and Portulaca oleracea L. in Chemistry and Biodiversity.
https://doi.org/10.1002/cbdv.202300270

Sarić-Krsmanović M, Tojić T, Gajić Umiljendić J, Đorđević T, Đurović-Pejčev R, Radivojević L, Božić D, Vrbničanin S. Phytochemical Investigation of Cuscuta campestris Yunck. Stem Extract and Evaluation of Its Bioherbicidal Effect on Amaranthus retroflexus L. and Portulaca oleracea L. in Chemistry and Biodiversity. 2023;.
doi:10.1002/cbdv.202300270 .

Sarić-Krsmanović, Marija, Tojić, Teodora, Gajić Umiljendić, Jelena, Đorđević, Tijana, Đurović-Pejčev, Rada, Radivojević, Ljiljana, Božić, Dragana, Vrbničanin, Sava, "Phytochemical Investigation of Cuscuta campestris Yunck. Stem Extract and Evaluation of Its Bioherbicidal Effect on Amaranthus retroflexus L. and Portulaca oleracea L" in Chemistry and Biodiversity (2023),
https://doi.org/10.1002/cbdv.202300270 . .

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  - 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 . .