TY  - JOUR
AU  - Ponjičan, Ondrej
AU  - Bajkin, Andjelko
AU  - Dimitrijević, Aleksandra
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3877
AB  - Sweet pepper from seedling produced at mulched area was testing during the course of production in 2013 in Novi Becej. The tested plot area was 1.88 ha. The study included the following technological operations: soil cultivation, container seedling production, soil mulching with tape drip irrigation and fertilization, planting of container seedlings, pepper care, picking peppers and cleaning plots by the end of the growing season. During the test for all of these technological operations was determined productivity and consumption of labor and machine work. In investigated pepper production technology was engaged 1017.67 h/ha and 3215.58 kWh/ha of of human and machine labor. The biggest engagement of human labor was in the pepper harvest, and amounts to 474.7 h/ha. The biggest engagement of machine work is ongoing pepper care precisely in drip irrigation, and amounts to 1407.3 kWh/ha.
AB  - Ispitivanje tehnologije proizvodnje povrtarske paprike iz rasada na malčovanom zemljištu izvedeno je u toku proizvodne 2013. godine u Novom Bečeju. Ispitivana parcela bila je površine 1,88 ha. Ispitivanjem su obuhvaćene sledeće tehnološke operacije: obrada zemljišta, kontejnerska proizvodnja rasada, mehanizovano nastiranje zemljišta sa postavljanjem trake za navodnjavanje kapanjem i đubrenjem, sadnja kontejnerskog rasada paprike, nega paprike, berba paprike i čišćenje parcele po završetku vegetacije. U toku ispitivanja za sve navedene tehnološke operacije određena je proizvodnost i utrošak živog i mašinskog rada. Pri tehnologiji proizvodnje povrtarske paprike na malčovanom zemljištu ukupno je angažovano 1017,67 radnik h/ha živog rada i 3215,58 kWh/ha mašinskog rada. Najveće angažovanje živog rada je u berbi paprike i iznosi 474,7 radnik h/ha. Najveće angažovanje mašinskog rada je u toku nege paprike preciznije prilikom navodnjavanja kapanjem, i iznosi 1407,3 kWh/ha.
PB  - Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad
T2  - Savremena poljoprivredna tehnika
T1  - Tecnical and technological parameters sweet pepers production
T1  - Tehničko tehnološki parametri proizvodnje povrtarske paprike
EP  - 140
IS  - 3
SP  - 131
VL  - 41
DO  - 10.5937/SavPoljTeh1503131P
ER  - 

@article{
author = "Ponjičan, Ondrej and Bajkin, Andjelko and Dimitrijević, Aleksandra",
year = "2015",
abstract = "Sweet pepper from seedling produced at mulched area was testing during the course of production in 2013 in Novi Becej. The tested plot area was 1.88 ha. The study included the following technological operations: soil cultivation, container seedling production, soil mulching with tape drip irrigation and fertilization, planting of container seedlings, pepper care, picking peppers and cleaning plots by the end of the growing season. During the test for all of these technological operations was determined productivity and consumption of labor and machine work. In investigated pepper production technology was engaged 1017.67 h/ha and 3215.58 kWh/ha of of human and machine labor. The biggest engagement of human labor was in the pepper harvest, and amounts to 474.7 h/ha. The biggest engagement of machine work is ongoing pepper care precisely in drip irrigation, and amounts to 1407.3 kWh/ha., Ispitivanje tehnologije proizvodnje povrtarske paprike iz rasada na malčovanom zemljištu izvedeno je u toku proizvodne 2013. godine u Novom Bečeju. Ispitivana parcela bila je površine 1,88 ha. Ispitivanjem su obuhvaćene sledeće tehnološke operacije: obrada zemljišta, kontejnerska proizvodnja rasada, mehanizovano nastiranje zemljišta sa postavljanjem trake za navodnjavanje kapanjem i đubrenjem, sadnja kontejnerskog rasada paprike, nega paprike, berba paprike i čišćenje parcele po završetku vegetacije. U toku ispitivanja za sve navedene tehnološke operacije određena je proizvodnost i utrošak živog i mašinskog rada. Pri tehnologiji proizvodnje povrtarske paprike na malčovanom zemljištu ukupno je angažovano 1017,67 radnik h/ha živog rada i 3215,58 kWh/ha mašinskog rada. Najveće angažovanje živog rada je u berbi paprike i iznosi 474,7 radnik h/ha. Najveće angažovanje mašinskog rada je u toku nege paprike preciznije prilikom navodnjavanja kapanjem, i iznosi 1407,3 kWh/ha.",
publisher = "Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad",
journal = "Savremena poljoprivredna tehnika",
title = "Tecnical and technological parameters sweet pepers production, Tehničko tehnološki parametri proizvodnje povrtarske paprike",
pages = "140-131",
number = "3",
volume = "41",
doi = "10.5937/SavPoljTeh1503131P"
}

Ponjičan, O., Bajkin, A.,& Dimitrijević, A.. (2015). Tecnical and technological parameters sweet pepers production. in Savremena poljoprivredna tehnika
Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad., 41(3), 131-140.
https://doi.org/10.5937/SavPoljTeh1503131P

Ponjičan O, Bajkin A, Dimitrijević A. Tecnical and technological parameters sweet pepers production. in Savremena poljoprivredna tehnika. 2015;41(3):131-140.
doi:10.5937/SavPoljTeh1503131P .

Ponjičan, Ondrej, Bajkin, Andjelko, Dimitrijević, Aleksandra, "Tecnical and technological parameters sweet pepers production" in Savremena poljoprivredna tehnika, 41, no. 3 (2015):131-140,
https://doi.org/10.5937/SavPoljTeh1503131P . .

TY  - CONF
AU  - Petrović, Dragan
AU  - Radojević, Rade
AU  - Ponjičan, Ondrej
AU  - Simikić, Mirko
AU  - Gajić, Boško
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3420
AB  - This paper presents results of dry aggregate size analysis of non-carbonate Humogley after the autumn tillage for wheat seeding. The 140 soil samples have been taken from square area of 90 m in length and 60 m in width, at depths of 0-5 cm and 5-10 cm. Structural aggregates larger than 9.5 mm were dominant in samples at depth of 0-5 cm, 51.67%. In contrast, the fractions larger than 50 mm have not been evidenced in any of acquired soil samples. This way, the regular conditions of Humogley has been confirmed and, therefore, its applicability for soil aggregate analysis and testing of the appropriate models has been verified too. Among others, presented results also show the large discrepancies of mean weight diameters of structural aggregates at different sample sites over the experimental plot. The analogue difference has been evidenced between the sample sites at depths of 0-5 cm and 5-10 cm. It follows that analysis of the representative distribution of soil structural aggregates of any plot demands analysis of large number of soil samples, acquired over the whole area of the plot.
PB  - Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb
C3  - Aktualni Zadaci Mehanizacije Poljoprivrede
T1  - Aggregate size distribution of humogley after an autumn tillage
EP  - 76
SP  - 67
VL  - 42
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3420
ER  - 

@conference{
author = "Petrović, Dragan and Radojević, Rade and Ponjičan, Ondrej and Simikić, Mirko and Gajić, Boško",
year = "2014",
abstract = "This paper presents results of dry aggregate size analysis of non-carbonate Humogley after the autumn tillage for wheat seeding. The 140 soil samples have been taken from square area of 90 m in length and 60 m in width, at depths of 0-5 cm and 5-10 cm. Structural aggregates larger than 9.5 mm were dominant in samples at depth of 0-5 cm, 51.67%. In contrast, the fractions larger than 50 mm have not been evidenced in any of acquired soil samples. This way, the regular conditions of Humogley has been confirmed and, therefore, its applicability for soil aggregate analysis and testing of the appropriate models has been verified too. Among others, presented results also show the large discrepancies of mean weight diameters of structural aggregates at different sample sites over the experimental plot. The analogue difference has been evidenced between the sample sites at depths of 0-5 cm and 5-10 cm. It follows that analysis of the representative distribution of soil structural aggregates of any plot demands analysis of large number of soil samples, acquired over the whole area of the plot.",
publisher = "Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb",
journal = "Aktualni Zadaci Mehanizacije Poljoprivrede",
title = "Aggregate size distribution of humogley after an autumn tillage",
pages = "76-67",
volume = "42",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3420"
}

Petrović, D., Radojević, R., Ponjičan, O., Simikić, M.,& Gajić, B.. (2014). Aggregate size distribution of humogley after an autumn tillage. in Aktualni Zadaci Mehanizacije Poljoprivrede
Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb., 42, 67-76.
https://hdl.handle.net/21.15107/rcub_agrospace_3420

Petrović D, Radojević R, Ponjičan O, Simikić M, Gajić B. Aggregate size distribution of humogley after an autumn tillage. in Aktualni Zadaci Mehanizacije Poljoprivrede. 2014;42:67-76.
https://hdl.handle.net/21.15107/rcub_agrospace_3420 .

Petrović, Dragan, Radojević, Rade, Ponjičan, Ondrej, Simikić, Mirko, Gajić, Boško, "Aggregate size distribution of humogley after an autumn tillage" in Aktualni Zadaci Mehanizacije Poljoprivrede, 42 (2014):67-76,
https://hdl.handle.net/21.15107/rcub_agrospace_3420 .

TY  - JOUR
AU  - Nikolić, Ratko
AU  - Savin, Lazar
AU  - Furman, Timofej
AU  - Tomić, Milan
AU  - Simikić, Mirko
AU  - Mileusnić, Zoran
AU  - Gligorić, Radojka
AU  - Žigić, Nevenka
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3338
AB  - This paper gives the results of research on the condition and needs for engines and tractors in agriculture, water management and forestry in Serbia. It was concluded that in agriculture around 408.000 of two-axle tractors, 190.000 of single-axle tractors and around 290.000 of moto tools are used, and they have all been used for more than 15 years. Annual needs for this machinery were also determined for a period from 2014 to 2020 and it includes 21.000 of two-axle tractors, 15.000 of single-axle tractors and 15.000 of moto tools, as well as 20.000 diesel engines. This way, revitalized industry could cover 80% of all requirements. .
AB  - U radu su izloženi rezultati istraživanja u oblasti stanja i potreba za motorima i traktorima u poljoprivredi, vodoprivredi i šumarstvu Srbije. Utvrđeno je da poljoprivreda koristi oko 408 hiljada dvoosovinskih traktora, 190 hiljada jednoosovinskih i oko 290 hiljada motooruđa i prosečna starost preko 15 godina. Utvrđene su potrebe godišnje od 2014 do 2020 i to 21.000 dvoosovinskih traktora, 15.000 jednoosovinskih i 15.000 motooruđa kao i 20.000 dizel motora godišnje. Revitalizovana domaća industrija može da pokrije oko 80% svih potreba. .
PB  - Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad
T2  - Traktori i pogonske mašine
T1  - Engines and tractors: Condition and needs
T1  - Motori i traktori - stanje i potrebe
EP  - 27
IS  - 1
SP  - 20
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3338
ER  - 

@article{
author = "Nikolić, Ratko and Savin, Lazar and Furman, Timofej and Tomić, Milan and Simikić, Mirko and Mileusnić, Zoran and Gligorić, Radojka and Žigić, Nevenka",
year = "2013",
abstract = "This paper gives the results of research on the condition and needs for engines and tractors in agriculture, water management and forestry in Serbia. It was concluded that in agriculture around 408.000 of two-axle tractors, 190.000 of single-axle tractors and around 290.000 of moto tools are used, and they have all been used for more than 15 years. Annual needs for this machinery were also determined for a period from 2014 to 2020 and it includes 21.000 of two-axle tractors, 15.000 of single-axle tractors and 15.000 of moto tools, as well as 20.000 diesel engines. This way, revitalized industry could cover 80% of all requirements. ., U radu su izloženi rezultati istraživanja u oblasti stanja i potreba za motorima i traktorima u poljoprivredi, vodoprivredi i šumarstvu Srbije. Utvrđeno je da poljoprivreda koristi oko 408 hiljada dvoosovinskih traktora, 190 hiljada jednoosovinskih i oko 290 hiljada motooruđa i prosečna starost preko 15 godina. Utvrđene su potrebe godišnje od 2014 do 2020 i to 21.000 dvoosovinskih traktora, 15.000 jednoosovinskih i 15.000 motooruđa kao i 20.000 dizel motora godišnje. Revitalizovana domaća industrija može da pokrije oko 80% svih potreba. .",
publisher = "Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad",
journal = "Traktori i pogonske mašine",
title = "Engines and tractors: Condition and needs, Motori i traktori - stanje i potrebe",
pages = "27-20",
number = "1",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3338"
}

Nikolić, R., Savin, L., Furman, T., Tomić, M., Simikić, M., Mileusnić, Z., Gligorić, R.,& Žigić, N.. (2013). Engines and tractors: Condition and needs. in Traktori i pogonske mašine
Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad., 18(1), 20-27.
https://hdl.handle.net/21.15107/rcub_agrospace_3338

Nikolić R, Savin L, Furman T, Tomić M, Simikić M, Mileusnić Z, Gligorić R, Žigić N. Engines and tractors: Condition and needs. in Traktori i pogonske mašine. 2013;18(1):20-27.
https://hdl.handle.net/21.15107/rcub_agrospace_3338 .

Nikolić, Ratko, Savin, Lazar, Furman, Timofej, Tomić, Milan, Simikić, Mirko, Mileusnić, Zoran, Gligorić, Radojka, Žigić, Nevenka, "Engines and tractors: Condition and needs" in Traktori i pogonske mašine, 18, no. 1 (2013):20-27,
https://hdl.handle.net/21.15107/rcub_agrospace_3338 .

TY  - JOUR
AU  - Bugarin, Rajko
AU  - Sedlar, Aleksandar
AU  - Urošević, Mirko
AU  - Živković, Milovan
AU  - Djukić, Nikola
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3355
AB  - In this paper are shown results of research in area of machines needs for modern fruit and grape production in Serbia. Besides that, paper show overview of sprayers and other equipment for pesticide application. Marks of machines needs are given according information which authors of this work have. Every new orchard or vineyard means good analyses of possibility, needs and expected results in future. According these information growers by new machines. Baying of new machines must consider that it should by machines which can work also in new and old orchards and vineyards. Introduction of new machines in production, together with modern technology, make possible higher quality and efficiency of fruit and grape production. .
AB  - U radu su dati rezultati istraživanja stanja i potreba mehanizacije za podizanje i eksploataciju višegodišnjih zasada kao i mašina za zaštitu ratarsko-povrtarskih kultura i zaštitu voćnjaka i vinograda. Ocena stanja i potreba mehanizacije izvedena je na osnovu dostupnih ali nepotpunih podataka. Svako podizanje savremenog voćnjaka ili vinograda iziskuje dobru pripremu, dugotrajne i složene radne operacije uz korišćenje specifične opreme, sa velikim finansijskim ulaganjima. Kod nabavke mehanizacije za podizanje zasada prednost treba dati opremi koja se može koristiti i za rad kod podignutih zasada. Ubrzana zamena zastarele i neadekvatne mehanizacije, uz uvođenje savremenih visokoproduktivnih mašina za nove guste zasade, značajno olakšava i ubrzava tehnološke operacije, doprinosi poboljšanju kvaliteta i kvantiteta voćnih plodova i grožđa sa postepenim smanjenjem zaostajanja za razvijenim svetom. .
PB  - Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad
T2  - Traktori i pogonske mašine
T1  - Machines in plant protection, fruit and grape production: Condition and needs
T1  - Mehanizacije u voćarstvu, vinogradarstvu i zaštiti bilja - stanje i potrebe
EP  - 65
IS  - 1
SP  - 56
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3355
ER  - 

@article{
author = "Bugarin, Rajko and Sedlar, Aleksandar and Urošević, Mirko and Živković, Milovan and Djukić, Nikola",
year = "2013",
abstract = "In this paper are shown results of research in area of machines needs for modern fruit and grape production in Serbia. Besides that, paper show overview of sprayers and other equipment for pesticide application. Marks of machines needs are given according information which authors of this work have. Every new orchard or vineyard means good analyses of possibility, needs and expected results in future. According these information growers by new machines. Baying of new machines must consider that it should by machines which can work also in new and old orchards and vineyards. Introduction of new machines in production, together with modern technology, make possible higher quality and efficiency of fruit and grape production. ., U radu su dati rezultati istraživanja stanja i potreba mehanizacije za podizanje i eksploataciju višegodišnjih zasada kao i mašina za zaštitu ratarsko-povrtarskih kultura i zaštitu voćnjaka i vinograda. Ocena stanja i potreba mehanizacije izvedena je na osnovu dostupnih ali nepotpunih podataka. Svako podizanje savremenog voćnjaka ili vinograda iziskuje dobru pripremu, dugotrajne i složene radne operacije uz korišćenje specifične opreme, sa velikim finansijskim ulaganjima. Kod nabavke mehanizacije za podizanje zasada prednost treba dati opremi koja se može koristiti i za rad kod podignutih zasada. Ubrzana zamena zastarele i neadekvatne mehanizacije, uz uvođenje savremenih visokoproduktivnih mašina za nove guste zasade, značajno olakšava i ubrzava tehnološke operacije, doprinosi poboljšanju kvaliteta i kvantiteta voćnih plodova i grožđa sa postepenim smanjenjem zaostajanja za razvijenim svetom. .",
publisher = "Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad",
journal = "Traktori i pogonske mašine",
title = "Machines in plant protection, fruit and grape production: Condition and needs, Mehanizacije u voćarstvu, vinogradarstvu i zaštiti bilja - stanje i potrebe",
pages = "65-56",
number = "1",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3355"
}

Bugarin, R., Sedlar, A., Urošević, M., Živković, M.,& Djukić, N.. (2013). Machines in plant protection, fruit and grape production: Condition and needs. in Traktori i pogonske mašine
Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad., 18(1), 56-65.
https://hdl.handle.net/21.15107/rcub_agrospace_3355

Bugarin R, Sedlar A, Urošević M, Živković M, Djukić N. Machines in plant protection, fruit and grape production: Condition and needs. in Traktori i pogonske mašine. 2013;18(1):56-65.
https://hdl.handle.net/21.15107/rcub_agrospace_3355 .

Bugarin, Rajko, Sedlar, Aleksandar, Urošević, Mirko, Živković, Milovan, Djukić, Nikola, "Machines in plant protection, fruit and grape production: Condition and needs" in Traktori i pogonske mašine, 18, no. 1 (2013):56-65,
https://hdl.handle.net/21.15107/rcub_agrospace_3355 .

TY  - JOUR
AU  - Bajkin, Andjelko
AU  - Ponjičan, Ondrej
AU  - Dimitrijević, Aleksandra
AU  - Zoranović, Miodrag
AU  - Radojčin, Milivoj
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3360
AB  - Influence the direction rotor rotary tiller on the ecological aspects of soil tillage was investigated under field conditions. Quality of soil tillage was determined by measuring the bulk density and the structure coefficient. Bulk density the tilled soil ranged from 1.015 to 1.186 g/cm3 at stubble field, 0.990 to 1.151 g/cm3 at soybean field and 0.995 to 1.066 g/cm3 at ploughed field. For conventional rotor rotation direction measured significantly lower values of bulk density at 5-10 cm depth testing done on soybean field. The lower value of bulk density in conventional rotor rotation direction result of excessive fragmentation of soil in greater depth. Soil tillage was a statistically significant increase in the value of the structure coefficient. After soil tillage, the structure coefficient values ranged from 0.68 to 2.22 at stubble field, 0.78 to 1.84 at soybean field and 1.16 to 2.64 at ploughed field. The higher the value of the structure coefficient represents higher quality of soil cultivation. In the case of reverse rotor rotation direction, measured significantly higher structure coefficient values compared to conventional rotor rotation direction.
AB  - Uticaj smera obrtanja rotora rotacione sitnilice na ekološke aspekte obrade zemljišta ispitivan je u poljskim uslovima. Kvalitet obrade zemljišta određen je merenjem zapreminske mase i koeficijenta strukturnosti zemljišta. Zapreminska masa na obrađenom zemljištu kretala se u granicama 1,015-1,186 g/cm3 na strništu, 0,990-1,151 g/cm3 na sojištu i 0,995-1,066 g/cm3 na oranom zemljištu. Za istosmerno obrtanje rotora izmerene su statistički značajno niže vrednosti zapreminske mase na dubini 5-10 cm za ispitivanje izvedeno na sojištu. Niža vrednost zapreminske mase zemljišta pri istosmernom obrtanju posledica je prekomernog usitnjavanja zemljišta na većoj dubini. Obradom zemljišta došlo je do statistički značajnog povećanja vrednosti koeficijenta strukturnosti zemljišta. Nakon obrade zemljišta vrednosti koeficijenta strukturnosti kretale su se u granicama 0,68-2,22 na strništu, 0,78-1,84 na sojištu i 1,16-2,64 na oranom zemljištu. Viša vrednost koeficijenta strukturnosti predstavlja viši kvalitet obrade zemljišta. Pri suprotnosmernom obrtanju rotora, izmerene su statistički značajno više vrednosti koeficijenta strukturnosti u odnosu na istosmerno obrtanje rotora.
PB  - Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad
T2  - Traktori i pogonske mašine
T1  - Influence the rotary tiller rotor rotation direction on soil tillage ecological aspects
T1  - Uticaja smera obrtanja rotora rotacione sitnilice na ekološke aspekte obrade zemljišta
EP  - 15
IS  - 4
SP  - 7
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3360
ER  - 

@article{
author = "Bajkin, Andjelko and Ponjičan, Ondrej and Dimitrijević, Aleksandra and Zoranović, Miodrag and Radojčin, Milivoj",
year = "2013",
abstract = "Influence the direction rotor rotary tiller on the ecological aspects of soil tillage was investigated under field conditions. Quality of soil tillage was determined by measuring the bulk density and the structure coefficient. Bulk density the tilled soil ranged from 1.015 to 1.186 g/cm3 at stubble field, 0.990 to 1.151 g/cm3 at soybean field and 0.995 to 1.066 g/cm3 at ploughed field. For conventional rotor rotation direction measured significantly lower values of bulk density at 5-10 cm depth testing done on soybean field. The lower value of bulk density in conventional rotor rotation direction result of excessive fragmentation of soil in greater depth. Soil tillage was a statistically significant increase in the value of the structure coefficient. After soil tillage, the structure coefficient values ranged from 0.68 to 2.22 at stubble field, 0.78 to 1.84 at soybean field and 1.16 to 2.64 at ploughed field. The higher the value of the structure coefficient represents higher quality of soil cultivation. In the case of reverse rotor rotation direction, measured significantly higher structure coefficient values compared to conventional rotor rotation direction., Uticaj smera obrtanja rotora rotacione sitnilice na ekološke aspekte obrade zemljišta ispitivan je u poljskim uslovima. Kvalitet obrade zemljišta određen je merenjem zapreminske mase i koeficijenta strukturnosti zemljišta. Zapreminska masa na obrađenom zemljištu kretala se u granicama 1,015-1,186 g/cm3 na strništu, 0,990-1,151 g/cm3 na sojištu i 0,995-1,066 g/cm3 na oranom zemljištu. Za istosmerno obrtanje rotora izmerene su statistički značajno niže vrednosti zapreminske mase na dubini 5-10 cm za ispitivanje izvedeno na sojištu. Niža vrednost zapreminske mase zemljišta pri istosmernom obrtanju posledica je prekomernog usitnjavanja zemljišta na većoj dubini. Obradom zemljišta došlo je do statistički značajnog povećanja vrednosti koeficijenta strukturnosti zemljišta. Nakon obrade zemljišta vrednosti koeficijenta strukturnosti kretale su se u granicama 0,68-2,22 na strništu, 0,78-1,84 na sojištu i 1,16-2,64 na oranom zemljištu. Viša vrednost koeficijenta strukturnosti predstavlja viši kvalitet obrade zemljišta. Pri suprotnosmernom obrtanju rotora, izmerene su statistički značajno više vrednosti koeficijenta strukturnosti u odnosu na istosmerno obrtanje rotora.",
publisher = "Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad",
journal = "Traktori i pogonske mašine",
title = "Influence the rotary tiller rotor rotation direction on soil tillage ecological aspects, Uticaja smera obrtanja rotora rotacione sitnilice na ekološke aspekte obrade zemljišta",
pages = "15-7",
number = "4",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3360"
}

Bajkin, A., Ponjičan, O., Dimitrijević, A., Zoranović, M.,& Radojčin, M.. (2013). Influence the rotary tiller rotor rotation direction on soil tillage ecological aspects. in Traktori i pogonske mašine
Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad., 18(4), 7-15.
https://hdl.handle.net/21.15107/rcub_agrospace_3360

Bajkin A, Ponjičan O, Dimitrijević A, Zoranović M, Radojčin M. Influence the rotary tiller rotor rotation direction on soil tillage ecological aspects. in Traktori i pogonske mašine. 2013;18(4):7-15.
https://hdl.handle.net/21.15107/rcub_agrospace_3360 .

Bajkin, Andjelko, Ponjičan, Ondrej, Dimitrijević, Aleksandra, Zoranović, Miodrag, Radojčin, Milivoj, "Influence the rotary tiller rotor rotation direction on soil tillage ecological aspects" in Traktori i pogonske mašine, 18, no. 4 (2013):7-15,
https://hdl.handle.net/21.15107/rcub_agrospace_3360 .

TY  - JOUR
AU  - Bajkin, Andjelko
AU  - Ilin, Žarko
AU  - Ponjičan, Ondrej
AU  - Dimitrijević, Aleksandra
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3353
AB  - In the last 40 years, the average acreage under vegetables in Serbia was 297,231 ha, which accounted for about 9% of the total arable land. The minimum vegetable acreage, 260,000 ha, was recorded in 1970, the maximum, 341 000 ha, in 1996. In the same period of 40 years, the average production of vegetables and potatoes in Serbia was about 2.1 million tons, at the average acreage of about 248,000 hectares, whose value totaled about 435 million euros. Of the previous figures, the production of fresh vegetables (beans, peas, onions, cabbage, kale, peppers, tomatoes, melons, carrots, cucumbers, spice pepper and garlic) was about 1.23 million tons at the acreage of 157,630 ha and 852,394 t of potatoes at the acreage of 90,802 ha. It is estimated that in the vegetable production in home gardens (at 48,799 ha) turns out about 409,240 t of vegetables whose overall value is about 85.5 million euros. There are no precise data on the vegetable production in tunnel-type greenhouses. It is roughly estimated that vegetables are grown at the acreage of 5000-6000 ha, with a steady increase of the acreage and the value of production at around 655 million euros. .
AB  - Prosečne površine pod povrćem u poslednjih 40 godina u Srbiji bile 297.231 ha, što čini oko 9% od ukupno obradivih površina. Minimalna površina pod povrćem, od 260.000 ha, zabeležena je 1970., a maksimalna (341.000 ha) 1996. godine. U Srbiji se u proseku za poslednjih 40 godina proizvodilo oko 2,1 miliona tona povrća i krompira u vrednosti od oko 435 miliona evra, na površini od oko 248 hiljada hektara. Od toga sveže povrće je oko 1,23 miliona tona (pasulj, grašak, crni luk, kupus i kelj, paprika, paradajz, bostan, mrkva, krastavac, začinska paprika i beli luk) sa površine od 157.630 ha i 852.394 t krompira sa površine od 90.802 ha. Procena je da se u baštama (48.799 ha) proizvede oko 409.240 t povrća ukupne vrednost od oko 85,5 miliona evra. Preciznih podataka o površinama pod plastenicima tunelskog tipa kod nas nema. Procena je da se u plastenicima povrće gaji na površini od 5.000-6.000 ha, sa stalnom tendencijom rasta. Proizvede se oko 840.000 t povrća u vrednosti proizvodnje na nivou od oko 655 miliona evra. .
PB  - Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad
T2  - Traktori i pogonske mašine
T1  - Mechanization for vegetable production: Situation and needs
T1  - Mehanizacija u povrtarstvu - stanje i potrebe
EP  - 47
IS  - 1
SP  - 37
VL  - 18
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3353
ER  - 

@article{
author = "Bajkin, Andjelko and Ilin, Žarko and Ponjičan, Ondrej and Dimitrijević, Aleksandra",
year = "2013",
abstract = "In the last 40 years, the average acreage under vegetables in Serbia was 297,231 ha, which accounted for about 9% of the total arable land. The minimum vegetable acreage, 260,000 ha, was recorded in 1970, the maximum, 341 000 ha, in 1996. In the same period of 40 years, the average production of vegetables and potatoes in Serbia was about 2.1 million tons, at the average acreage of about 248,000 hectares, whose value totaled about 435 million euros. Of the previous figures, the production of fresh vegetables (beans, peas, onions, cabbage, kale, peppers, tomatoes, melons, carrots, cucumbers, spice pepper and garlic) was about 1.23 million tons at the acreage of 157,630 ha and 852,394 t of potatoes at the acreage of 90,802 ha. It is estimated that in the vegetable production in home gardens (at 48,799 ha) turns out about 409,240 t of vegetables whose overall value is about 85.5 million euros. There are no precise data on the vegetable production in tunnel-type greenhouses. It is roughly estimated that vegetables are grown at the acreage of 5000-6000 ha, with a steady increase of the acreage and the value of production at around 655 million euros. ., Prosečne površine pod povrćem u poslednjih 40 godina u Srbiji bile 297.231 ha, što čini oko 9% od ukupno obradivih površina. Minimalna površina pod povrćem, od 260.000 ha, zabeležena je 1970., a maksimalna (341.000 ha) 1996. godine. U Srbiji se u proseku za poslednjih 40 godina proizvodilo oko 2,1 miliona tona povrća i krompira u vrednosti od oko 435 miliona evra, na površini od oko 248 hiljada hektara. Od toga sveže povrće je oko 1,23 miliona tona (pasulj, grašak, crni luk, kupus i kelj, paprika, paradajz, bostan, mrkva, krastavac, začinska paprika i beli luk) sa površine od 157.630 ha i 852.394 t krompira sa površine od 90.802 ha. Procena je da se u baštama (48.799 ha) proizvede oko 409.240 t povrća ukupne vrednost od oko 85,5 miliona evra. Preciznih podataka o površinama pod plastenicima tunelskog tipa kod nas nema. Procena je da se u plastenicima povrće gaji na površini od 5.000-6.000 ha, sa stalnom tendencijom rasta. Proizvede se oko 840.000 t povrća u vrednosti proizvodnje na nivou od oko 655 miliona evra. .",
publisher = "Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad",
journal = "Traktori i pogonske mašine",
title = "Mechanization for vegetable production: Situation and needs, Mehanizacija u povrtarstvu - stanje i potrebe",
pages = "47-37",
number = "1",
volume = "18",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3353"
}

Bajkin, A., Ilin, Ž., Ponjičan, O.,& Dimitrijević, A.. (2013). Mechanization for vegetable production: Situation and needs. in Traktori i pogonske mašine
Naučno društvo za pogonske mašine, traktore i održavanje, Novi Sad i Univerzitet u Novom Sadu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Novi Sad., 18(1), 37-47.
https://hdl.handle.net/21.15107/rcub_agrospace_3353

Bajkin A, Ilin Ž, Ponjičan O, Dimitrijević A. Mechanization for vegetable production: Situation and needs. in Traktori i pogonske mašine. 2013;18(1):37-47.
https://hdl.handle.net/21.15107/rcub_agrospace_3353 .

Bajkin, Andjelko, Ilin, Žarko, Ponjičan, Ondrej, Dimitrijević, Aleksandra, "Mechanization for vegetable production: Situation and needs" in Traktori i pogonske mašine, 18, no. 1 (2013):37-47,
https://hdl.handle.net/21.15107/rcub_agrospace_3353 .

TY  - CONF
AU  - Dimitrijević, Aleksandra
AU  - Miodragović, Rajko
AU  - Mileusnić, Zoran
AU  - Urošević, Mirko
AU  - Ponjičan, Ondrej
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3009
AB  - In this paper an introduction to a model that can serve for optimal choice of the greenhouse technical and technology system is presented. The model is very suitable for producers to whom adequate solution of the greenhouse production systems can be suggested, based on their elementary idea, regarding the greenhouse construction type and technical systems with their capacities. Based the chosen plant production and available production area the model suggests to the farmer which type of greenhouse to use, which technical systems together with their capacity and suggests the area for further expansion.
PB  - Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb
C3  - Aktualni Zadaci Mehanizacije Poljoprivrede
T1  - Introduction to the greenhouse decision support model
EP  - 576
SP  - 569
VL  - 40
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3009
ER  - 

@conference{
author = "Dimitrijević, Aleksandra and Miodragović, Rajko and Mileusnić, Zoran and Urošević, Mirko and Ponjičan, Ondrej",
year = "2012",
abstract = "In this paper an introduction to a model that can serve for optimal choice of the greenhouse technical and technology system is presented. The model is very suitable for producers to whom adequate solution of the greenhouse production systems can be suggested, based on their elementary idea, regarding the greenhouse construction type and technical systems with their capacities. Based the chosen plant production and available production area the model suggests to the farmer which type of greenhouse to use, which technical systems together with their capacity and suggests the area for further expansion.",
publisher = "Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb",
journal = "Aktualni Zadaci Mehanizacije Poljoprivrede",
title = "Introduction to the greenhouse decision support model",
pages = "576-569",
volume = "40",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3009"
}

Dimitrijević, A., Miodragović, R., Mileusnić, Z., Urošević, M.,& Ponjičan, O.. (2012). Introduction to the greenhouse decision support model. in Aktualni Zadaci Mehanizacije Poljoprivrede
Agronomski fakultet Sveucilista u Zagrebu, 10000 Zagreb., 40, 569-576.
https://hdl.handle.net/21.15107/rcub_agrospace_3009

Dimitrijević A, Miodragović R, Mileusnić Z, Urošević M, Ponjičan O. Introduction to the greenhouse decision support model. in Aktualni Zadaci Mehanizacije Poljoprivrede. 2012;40:569-576.
https://hdl.handle.net/21.15107/rcub_agrospace_3009 .

Dimitrijević, Aleksandra, Miodragović, Rajko, Mileusnić, Zoran, Urošević, Mirko, Ponjičan, Ondrej, "Introduction to the greenhouse decision support model" in Aktualni Zadaci Mehanizacije Poljoprivrede, 40 (2012):569-576,
https://hdl.handle.net/21.15107/rcub_agrospace_3009 .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Bajkin, Andjelko
AU  - Zoranović, Miodrag
AU  - Ralević, Ivana
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2928
AB  - The aim of the research was to make a simple model which can help producers when starting the greenhouse production system. Based on the chosen plant production and available production area, the model suggests which type of greenhouse farmers should, as well as the optimal technical systems and area for further expansion. The control of the model flow was carried out in the MS Excel program. During the testing phase, it was concluded that the MS Excel is not so good in programming so Quick Basic version 4.5 was used and it appeared simpler and easier for programming. The results show that the model is very suitable for producers, to whom adequate solutions of the greenhouse production systems can be suggested, based on its elementary idea in terms of the greenhouse construction type and technical systems with their capacities. .
AB  - U radu je prikazan model izbora optimalnog tehnološko-tehničkog sistema gajenja u kontrolisanim uslovima. Cilj je bio napraviti model, kao pomoć proizvođačima, kojim bi se, na osnovu njihove početne ideje, sugerisali objekti, tehnički sistemi i prateća infrastruktura sa potrebnim parametrima vezanim za kapacitivnost. Na osnovu izabrane gajene kulture i raspoložive površine model, kao izlazne parametre, daje tip konstrukcije i orijentaciju objekta, tehnološki sistem gajenja, tehnološko-tehničke sisteme ventilacije, grejanja, navodnjavanja i njihove potrebne kapacitete, zatim površinu neophodnu za prateće objekte kao površinu predviđenu za buduće proširenje. Provera algoritma modela je, obzirom na široku primenu MS Office Programa, izvedena u MS Excelu. Tokom provere modela, ustanovljeno je da MS Excel nije jednostavan za programiranje određenih koraka i kontinualno vođenje modela. Jedan deo provere rada modela je izveden u Quick Basic programu, verzija 4.5. koji se pokazao kao puno jednostavniji za programiranje i vođenje algoritma. Utvrđeno je da je predloženi model funkcionalan ali su potrebna dalja poboljšanja u smislu uvođenja većeg broja gajenih kultura i stalnog dopunjavanja baze podataka o tipovima i oblicima konstrukcija objekata zaštićenog prostora i pokrivnih materijala. .
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Journal on Processing and Energy in Agriculture
T1  - Decision support model for energy efficient greenhouse production system
T1  - Model izbora energetski efikasnog tehnološko-tehničkog sistema gajenja biljaka u kontrolisanim uslovima
EP  - 60
IS  - 2
SP  - 57
VL  - 16
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2928
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Bajkin, Andjelko and Zoranović, Miodrag and Ralević, Ivana",
year = "2012",
abstract = "The aim of the research was to make a simple model which can help producers when starting the greenhouse production system. Based on the chosen plant production and available production area, the model suggests which type of greenhouse farmers should, as well as the optimal technical systems and area for further expansion. The control of the model flow was carried out in the MS Excel program. During the testing phase, it was concluded that the MS Excel is not so good in programming so Quick Basic version 4.5 was used and it appeared simpler and easier for programming. The results show that the model is very suitable for producers, to whom adequate solutions of the greenhouse production systems can be suggested, based on its elementary idea in terms of the greenhouse construction type and technical systems with their capacities. ., U radu je prikazan model izbora optimalnog tehnološko-tehničkog sistema gajenja u kontrolisanim uslovima. Cilj je bio napraviti model, kao pomoć proizvođačima, kojim bi se, na osnovu njihove početne ideje, sugerisali objekti, tehnički sistemi i prateća infrastruktura sa potrebnim parametrima vezanim za kapacitivnost. Na osnovu izabrane gajene kulture i raspoložive površine model, kao izlazne parametre, daje tip konstrukcije i orijentaciju objekta, tehnološki sistem gajenja, tehnološko-tehničke sisteme ventilacije, grejanja, navodnjavanja i njihove potrebne kapacitete, zatim površinu neophodnu za prateće objekte kao površinu predviđenu za buduće proširenje. Provera algoritma modela je, obzirom na široku primenu MS Office Programa, izvedena u MS Excelu. Tokom provere modela, ustanovljeno je da MS Excel nije jednostavan za programiranje određenih koraka i kontinualno vođenje modela. Jedan deo provere rada modela je izveden u Quick Basic programu, verzija 4.5. koji se pokazao kao puno jednostavniji za programiranje i vođenje algoritma. Utvrđeno je da je predloženi model funkcionalan ali su potrebna dalja poboljšanja u smislu uvođenja većeg broja gajenih kultura i stalnog dopunjavanja baze podataka o tipovima i oblicima konstrukcija objekata zaštićenog prostora i pokrivnih materijala. .",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Journal on Processing and Energy in Agriculture",
title = "Decision support model for energy efficient greenhouse production system, Model izbora energetski efikasnog tehnološko-tehničkog sistema gajenja biljaka u kontrolisanim uslovima",
pages = "60-57",
number = "2",
volume = "16",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2928"
}

Dimitrijević, A., Bajkin, A., Zoranović, M.,& Ralević, I.. (2012). Decision support model for energy efficient greenhouse production system. in Journal on Processing and Energy in Agriculture
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 16(2), 57-60.
https://hdl.handle.net/21.15107/rcub_agrospace_2928

Dimitrijević A, Bajkin A, Zoranović M, Ralević I. Decision support model for energy efficient greenhouse production system. in Journal on Processing and Energy in Agriculture. 2012;16(2):57-60.
https://hdl.handle.net/21.15107/rcub_agrospace_2928 .

Dimitrijević, Aleksandra, Bajkin, Andjelko, Zoranović, Miodrag, Ralević, Ivana, "Decision support model for energy efficient greenhouse production system" in Journal on Processing and Energy in Agriculture, 16, no. 2 (2012):57-60,
https://hdl.handle.net/21.15107/rcub_agrospace_2928 .

TY  - JOUR
AU  - Dimitrijević, Aleksandra
AU  - Bajkin, Andjelko
AU  - Djević, Milan
AU  - Urošević, Mirko
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2649
AB  - The aim of this research was to define tomato greenhouse production regarding the energy consumption in order to find the critical points in the energy flow, that can be eliminated or their influence reduced by choosing the adequate type of construction, production technology and culture that will be produced. Energy parameters were determined for four different greenhouse constructions. On the basis of tomato yield, production output and the energy input (fuel, electricity, straw, fertilizer, plant protection chemicals, water, human labor, technical systems), specific energy input, energy output-input ratio and energy productivity were estimated. Results show that the lowest energy consumption was obtained for gutter connected greenhouse with two bays, 21.96 MJ/m2. The highest energy consumption was measured for the tunnel structure, 26.87 MJ/m2. The highest tomato yield was obtained in multispan greenhouse with thirteen bays, 35.81 kg/m2. As for the energy parameters, the highest energy input was measured for the tunnel structure, 1.55 MJ/kg while the lowest was obtained in multi-span greenhouse with thirteen bays, 0.65 MJ/kg. The highest energy ratio was calculated for the multi-span greenhouse with thirteen bays, 1.23 as well as the highest energy productivity, 1.55 kg/MJ.
AB  - Cilj ovog rada je bio da se definiše proizvodnja paradajza u zaštićenom prostoru sa aspekta potrošnje energije kako bi se uočila kritična mesta u energetskom bilansu proizvodnje i kako bi se utvrdilo da li se izborom konstrukcije objekta zaštićenog prostora može uticati na energetski bilans proizvodnog sistema. Energetski bilans je utvrđen za četiri tipa konstrukcije objekata zaštićenog prostora. Na osnovu prinosa paradajza, energetskog inputa i energetskog outputa određeni su specifični energetski input, energetski odnos i energetska produktivnost. Rezultati pokazuju da je najniža potrošnja energije po jedinici površine ostvarena u objektu sa dva bloka, 21,96 MJ/m2 dok je najviša potrošnja energije izmerena u objektu tunel tipa, 26,87 MJ/m2. Najviši prinos paradajza ostvaren je u blok plasteniku sa trinaest blokova, 35,81 kg/m2. Kada se pogleda energetski bilans, najviši energetski input utvrđen je za objekat tunel tipa 1,55 MJ/kg a najniži za blok plastenik sa trinaest blokova 0,65 MJ/kg. Najviši energetski odnos je zabeležen kod blok objekta sa trinaest blokova, 1,23 kao i najviša energetska produktivnost, 1,55 kg/MJ.
PB  - Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
T2  - Journal on Processing and Energy in Agriculture
T1  - Energy productivity of the tomato greenhouse production
T1  - Energetska produktivnost proizvodnje paradajza u objektima zaštićenog prostora
EP  - 142
IS  - 3
SP  - 138
VL  - 15
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2649
ER  - 

@article{
author = "Dimitrijević, Aleksandra and Bajkin, Andjelko and Djević, Milan and Urošević, Mirko",
year = "2011",
abstract = "The aim of this research was to define tomato greenhouse production regarding the energy consumption in order to find the critical points in the energy flow, that can be eliminated or their influence reduced by choosing the adequate type of construction, production technology and culture that will be produced. Energy parameters were determined for four different greenhouse constructions. On the basis of tomato yield, production output and the energy input (fuel, electricity, straw, fertilizer, plant protection chemicals, water, human labor, technical systems), specific energy input, energy output-input ratio and energy productivity were estimated. Results show that the lowest energy consumption was obtained for gutter connected greenhouse with two bays, 21.96 MJ/m2. The highest energy consumption was measured for the tunnel structure, 26.87 MJ/m2. The highest tomato yield was obtained in multispan greenhouse with thirteen bays, 35.81 kg/m2. As for the energy parameters, the highest energy input was measured for the tunnel structure, 1.55 MJ/kg while the lowest was obtained in multi-span greenhouse with thirteen bays, 0.65 MJ/kg. The highest energy ratio was calculated for the multi-span greenhouse with thirteen bays, 1.23 as well as the highest energy productivity, 1.55 kg/MJ., Cilj ovog rada je bio da se definiše proizvodnja paradajza u zaštićenom prostoru sa aspekta potrošnje energije kako bi se uočila kritična mesta u energetskom bilansu proizvodnje i kako bi se utvrdilo da li se izborom konstrukcije objekta zaštićenog prostora može uticati na energetski bilans proizvodnog sistema. Energetski bilans je utvrđen za četiri tipa konstrukcije objekata zaštićenog prostora. Na osnovu prinosa paradajza, energetskog inputa i energetskog outputa određeni su specifični energetski input, energetski odnos i energetska produktivnost. Rezultati pokazuju da je najniža potrošnja energije po jedinici površine ostvarena u objektu sa dva bloka, 21,96 MJ/m2 dok je najviša potrošnja energije izmerena u objektu tunel tipa, 26,87 MJ/m2. Najviši prinos paradajza ostvaren je u blok plasteniku sa trinaest blokova, 35,81 kg/m2. Kada se pogleda energetski bilans, najviši energetski input utvrđen je za objekat tunel tipa 1,55 MJ/kg a najniži za blok plastenik sa trinaest blokova 0,65 MJ/kg. Najviši energetski odnos je zabeležen kod blok objekta sa trinaest blokova, 1,23 kao i najviša energetska produktivnost, 1,55 kg/MJ.",
publisher = "Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad",
journal = "Journal on Processing and Energy in Agriculture",
title = "Energy productivity of the tomato greenhouse production, Energetska produktivnost proizvodnje paradajza u objektima zaštićenog prostora",
pages = "142-138",
number = "3",
volume = "15",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2649"
}

Dimitrijević, A., Bajkin, A., Djević, M.,& Urošević, M.. (2011). Energy productivity of the tomato greenhouse production. in Journal on Processing and Energy in Agriculture
Nacionalno društvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 15(3), 138-142.
https://hdl.handle.net/21.15107/rcub_agrospace_2649

Dimitrijević A, Bajkin A, Djević M, Urošević M. Energy productivity of the tomato greenhouse production. in Journal on Processing and Energy in Agriculture. 2011;15(3):138-142.
https://hdl.handle.net/21.15107/rcub_agrospace_2649 .

Dimitrijević, Aleksandra, Bajkin, Andjelko, Djević, Milan, Urošević, Mirko, "Energy productivity of the tomato greenhouse production" in Journal on Processing and Energy in Agriculture, 15, no. 3 (2011):138-142,
https://hdl.handle.net/21.15107/rcub_agrospace_2649 .

TY  - JOUR
AU  - Ponjičan, Ondrej
AU  - Bajkin, Andjelko
AU  - Dimitrijević, Aleksandra
AU  - Savin, Lazar
AU  - Tomić, Milan
AU  - Simikić, Mirko
AU  - Dedović, Nebojša
AU  - Zoranović, Miodrag
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2596
AB  - The aim of this paper was to analyze the influence of rotary tiller rotor rotation direction on specific work requirement (SWPTO). The SWPTO was calculated by measuring the power take-off (PTO) torque, PTO speed, working speed and depth, as well as the working width. The tillage quality was determined by the bulk density and soil structure. Reverse rotor rotation direction concept is characterized by more efficient tillage which provides significantly higher amount of macro-structure aggregates (0.25 to 10 mm) and their better distribution in the soil. Significantly lower SWPTO was observed with the reverse rotor rotation direction. It was within the range of -2.15-27.74% (14.35% on average) depending on the work speed which was 0.29 to 1.08 m s(-1). Multiple linear regression provided new equations for the calculation of SWPTO depending not only on the working parameters, but on the intensity of soil breaking and soil conditions as well. The obtained equations had high values of Coefficients of determination R-2 (0.92 to 0.99 for conventional and 0.84 to 0.93 for reverse rotor rotation direction). Reverse rotor rotation direction had lower SWPTO values which were 20.3 and 15.5% for the working speeds of 0.5 and 1.0 m s(-1), respectively, and were obtained for equal values of tillage intensity parameters.
PB  - Academic Journals, Victoria Island
T2  - African Journal of Agricultural Research
T1  - The effects of working parameters and tillage quality on rotary tiller specific work requirement
EP  - 6524
IS  - 31
SP  - 6513
VL  - 6
DO  - 10.5897/AJAR11.991
ER  - 

@article{
author = "Ponjičan, Ondrej and Bajkin, Andjelko and Dimitrijević, Aleksandra and Savin, Lazar and Tomić, Milan and Simikić, Mirko and Dedović, Nebojša and Zoranović, Miodrag",
year = "2011",
abstract = "The aim of this paper was to analyze the influence of rotary tiller rotor rotation direction on specific work requirement (SWPTO). The SWPTO was calculated by measuring the power take-off (PTO) torque, PTO speed, working speed and depth, as well as the working width. The tillage quality was determined by the bulk density and soil structure. Reverse rotor rotation direction concept is characterized by more efficient tillage which provides significantly higher amount of macro-structure aggregates (0.25 to 10 mm) and their better distribution in the soil. Significantly lower SWPTO was observed with the reverse rotor rotation direction. It was within the range of -2.15-27.74% (14.35% on average) depending on the work speed which was 0.29 to 1.08 m s(-1). Multiple linear regression provided new equations for the calculation of SWPTO depending not only on the working parameters, but on the intensity of soil breaking and soil conditions as well. The obtained equations had high values of Coefficients of determination R-2 (0.92 to 0.99 for conventional and 0.84 to 0.93 for reverse rotor rotation direction). Reverse rotor rotation direction had lower SWPTO values which were 20.3 and 15.5% for the working speeds of 0.5 and 1.0 m s(-1), respectively, and were obtained for equal values of tillage intensity parameters.",
publisher = "Academic Journals, Victoria Island",
journal = "African Journal of Agricultural Research",
title = "The effects of working parameters and tillage quality on rotary tiller specific work requirement",
pages = "6524-6513",
number = "31",
volume = "6",
doi = "10.5897/AJAR11.991"
}

Ponjičan, O., Bajkin, A., Dimitrijević, A., Savin, L., Tomić, M., Simikić, M., Dedović, N.,& Zoranović, M.. (2011). The effects of working parameters and tillage quality on rotary tiller specific work requirement. in African Journal of Agricultural Research
Academic Journals, Victoria Island., 6(31), 6513-6524.
https://doi.org/10.5897/AJAR11.991

Ponjičan O, Bajkin A, Dimitrijević A, Savin L, Tomić M, Simikić M, Dedović N, Zoranović M. The effects of working parameters and tillage quality on rotary tiller specific work requirement. in African Journal of Agricultural Research. 2011;6(31):6513-6524.
doi:10.5897/AJAR11.991 .

Ponjičan, Ondrej, Bajkin, Andjelko, Dimitrijević, Aleksandra, Savin, Lazar, Tomić, Milan, Simikić, Mirko, Dedović, Nebojša, Zoranović, Miodrag, "The effects of working parameters and tillage quality on rotary tiller specific work requirement" in African Journal of Agricultural Research, 6, no. 31 (2011):6513-6524,
https://doi.org/10.5897/AJAR11.991 . .