TY  - JOUR
AU  - Krga, Ivan
AU  - Simić, Aleksandar
AU  - Dželetović, Željko
AU  - Babić, Snežana
AU  - Katanski, Snežana
AU  - Roljević Nikolić, Svetlana
AU  - Damnjanović, Jelena
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5938
AB  - In limited growing conditions, intercropped field peas and oats can represent a significant source of forage rich in protein. If applied correctly, factors such as nitrogen fertilizer, the mowing phase, and sowing norms can significantly increase the productivity of these mixtures. Field trials were conducted to examine their productivity under different nitrogen levels (0, 40, 80 kg ha−1 ), different sowing norms/mixtures (field peas: oats—100:15%; 100:30%), and two stages of growth (full flowering, full pod formation). Nitrogen fertilizer and different sowing norms had a significant effect on the biomass, hay, and crude protein yields. On average, the highest hay yields were achieved with 80 kg ha−1 N (4.96 t ha−1 ), followed by 40 kg ha−1 N (4.27 t ha−1 ). The highest protein yields were achieved with 40 kg ha−1 N (CP—704.1 kg ha−1 ), followed by 80 kg ha−1 N (CP—637.6 kg ha−1 ). Sowing norm 100:30% achieved higher hay yields: 100:30%—4.82 t ha−1; 100:15%—4.44 t ha−1, while 100:15% achieved higher crude protein yields: 100:15%—730.4 kg ha−1; 100:30%—692.7 kg ha−1 on average. The costs were not significantly increased with the nitrogen fertilizer, but the net profits were increased by as much as 163%, depending on the nitrogen level and the mixture. Nitrogen fertilizer also achieves higher economic efficiency for the mixture 100:15% compared to the 100:30% mixture. Mixtures of field peas and oats outperform single-grown crops and provide cost-effective feed for a short time. Using optimal seed ratios and nitrogen fertilizer can significantly increase the productivity and profitability of the feed with minimal impact on the overall production costs.
PB  - MDPI
T2  - Agriculture (Switzerland)
T1  - Biomass and Protein Yields of Field Peas and Oats Intercrop Affected by Sowing Norms and Nitrogen Fertilizer at Two Different Stages of Growth
IS  - 9
SP  - 871
VL  - 11
DO  - 10.3390/agriculture11090871
ER  - 

@article{
author = "Krga, Ivan and Simić, Aleksandar and Dželetović, Željko and Babić, Snežana and Katanski, Snežana and Roljević Nikolić, Svetlana and Damnjanović, Jelena",
year = "2021",
abstract = "In limited growing conditions, intercropped field peas and oats can represent a significant source of forage rich in protein. If applied correctly, factors such as nitrogen fertilizer, the mowing phase, and sowing norms can significantly increase the productivity of these mixtures. Field trials were conducted to examine their productivity under different nitrogen levels (0, 40, 80 kg ha−1 ), different sowing norms/mixtures (field peas: oats—100:15%; 100:30%), and two stages of growth (full flowering, full pod formation). Nitrogen fertilizer and different sowing norms had a significant effect on the biomass, hay, and crude protein yields. On average, the highest hay yields were achieved with 80 kg ha−1 N (4.96 t ha−1 ), followed by 40 kg ha−1 N (4.27 t ha−1 ). The highest protein yields were achieved with 40 kg ha−1 N (CP—704.1 kg ha−1 ), followed by 80 kg ha−1 N (CP—637.6 kg ha−1 ). Sowing norm 100:30% achieved higher hay yields: 100:30%—4.82 t ha−1; 100:15%—4.44 t ha−1, while 100:15% achieved higher crude protein yields: 100:15%—730.4 kg ha−1; 100:30%—692.7 kg ha−1 on average. The costs were not significantly increased with the nitrogen fertilizer, but the net profits were increased by as much as 163%, depending on the nitrogen level and the mixture. Nitrogen fertilizer also achieves higher economic efficiency for the mixture 100:15% compared to the 100:30% mixture. Mixtures of field peas and oats outperform single-grown crops and provide cost-effective feed for a short time. Using optimal seed ratios and nitrogen fertilizer can significantly increase the productivity and profitability of the feed with minimal impact on the overall production costs.",
publisher = "MDPI",
journal = "Agriculture (Switzerland)",
title = "Biomass and Protein Yields of Field Peas and Oats Intercrop Affected by Sowing Norms and Nitrogen Fertilizer at Two Different Stages of Growth",
number = "9",
pages = "871",
volume = "11",
doi = "10.3390/agriculture11090871"
}

Krga, I., Simić, A., Dželetović, Ž., Babić, S., Katanski, S., Roljević Nikolić, S.,& Damnjanović, J.. (2021). Biomass and Protein Yields of Field Peas and Oats Intercrop Affected by Sowing Norms and Nitrogen Fertilizer at Two Different Stages of Growth. in Agriculture (Switzerland)
MDPI., 11(9), 871.
https://doi.org/10.3390/agriculture11090871

Krga I, Simić A, Dželetović Ž, Babić S, Katanski S, Roljević Nikolić S, Damnjanović J. Biomass and Protein Yields of Field Peas and Oats Intercrop Affected by Sowing Norms and Nitrogen Fertilizer at Two Different Stages of Growth. in Agriculture (Switzerland). 2021;11(9):871.
doi:10.3390/agriculture11090871 .

Krga, Ivan, Simić, Aleksandar, Dželetović, Željko, Babić, Snežana, Katanski, Snežana, Roljević Nikolić, Svetlana, Damnjanović, Jelena, "Biomass and Protein Yields of Field Peas and Oats Intercrop Affected by Sowing Norms and Nitrogen Fertilizer at Two Different Stages of Growth" in Agriculture (Switzerland), 11, no. 9 (2021):871,
https://doi.org/10.3390/agriculture11090871 . .

TY  - JOUR
AU  - Krga, Ivan
AU  - Simić, Aleksandar
AU  - Mandić, Violeta
AU  - Bijelić, Zorica
AU  - Dzeletović, Zeljko
AU  - Vasiljević, Sanja
AU  - Adžić, Sladjan
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5114
AB  - Monoculture and intensive use of mechanization and inorganic chemicals are leading to degradation and erosion of our soils and agro-ecosystems. At the same time, the production of animal feeds that are rich in protein is constantly decreasing in many European countries. Modest cultivation needs, favorable content of nutrients, and beneficial effect on the environment, make field pea and oat mixtures promising crops to tackle these issues. In three growing seasons and without irrigation or fertilisation, we have examined two basic field pea cultivars (Kosmaj, OS Adam) and one leafless cultivar (OS Letin) intercropped with oat (NS Jadar), with seeding rates, field pea: oat - 100:10%; 100:20% Results have shown that basic type cultivars have better overall development and higher yields compared to leafless cultivar, whether grown as single crops or in the mixture. Basic cultivars (OS Adam, Kosmaj) achieved higher protein content, compared to cultivar Letin, 163.9 g kg(-1), 153.3 g kg(-1), 136 g kg(-1), respectively. Yields were higher in 100:20% mixtures, compared to 100:10% mixtures and single grown crops, and we conclude that intercropping these species is superior to cultivating them separately. Protein content wasn't significantly different between two seeding rates, thus seed rates shouldn't be lower than 100:20%.
PB  - Soc Field Crop Sci, Bornova
T2  - Turkish Journal of Field Crops
T1  - Forage yield and protein content of different field pea cultivars and oat mixtures grown as winter crops
EP  - 177
IS  - 2
SP  - 170
VL  - 24
DO  - 10.17557/tjfc.643524
ER  - 

@article{
author = "Krga, Ivan and Simić, Aleksandar and Mandić, Violeta and Bijelić, Zorica and Dzeletović, Zeljko and Vasiljević, Sanja and Adžić, Sladjan",
year = "2019",
abstract = "Monoculture and intensive use of mechanization and inorganic chemicals are leading to degradation and erosion of our soils and agro-ecosystems. At the same time, the production of animal feeds that are rich in protein is constantly decreasing in many European countries. Modest cultivation needs, favorable content of nutrients, and beneficial effect on the environment, make field pea and oat mixtures promising crops to tackle these issues. In three growing seasons and without irrigation or fertilisation, we have examined two basic field pea cultivars (Kosmaj, OS Adam) and one leafless cultivar (OS Letin) intercropped with oat (NS Jadar), with seeding rates, field pea: oat - 100:10%; 100:20% Results have shown that basic type cultivars have better overall development and higher yields compared to leafless cultivar, whether grown as single crops or in the mixture. Basic cultivars (OS Adam, Kosmaj) achieved higher protein content, compared to cultivar Letin, 163.9 g kg(-1), 153.3 g kg(-1), 136 g kg(-1), respectively. Yields were higher in 100:20% mixtures, compared to 100:10% mixtures and single grown crops, and we conclude that intercropping these species is superior to cultivating them separately. Protein content wasn't significantly different between two seeding rates, thus seed rates shouldn't be lower than 100:20%.",
publisher = "Soc Field Crop Sci, Bornova",
journal = "Turkish Journal of Field Crops",
title = "Forage yield and protein content of different field pea cultivars and oat mixtures grown as winter crops",
pages = "177-170",
number = "2",
volume = "24",
doi = "10.17557/tjfc.643524"
}

Krga, I., Simić, A., Mandić, V., Bijelić, Z., Dzeletović, Z., Vasiljević, S.,& Adžić, S.. (2019). Forage yield and protein content of different field pea cultivars and oat mixtures grown as winter crops. in Turkish Journal of Field Crops
Soc Field Crop Sci, Bornova., 24(2), 170-177.
https://doi.org/10.17557/tjfc.643524

Krga I, Simić A, Mandić V, Bijelić Z, Dzeletović Z, Vasiljević S, Adžić S. Forage yield and protein content of different field pea cultivars and oat mixtures grown as winter crops. in Turkish Journal of Field Crops. 2019;24(2):170-177.
doi:10.17557/tjfc.643524 .

Krga, Ivan, Simić, Aleksandar, Mandić, Violeta, Bijelić, Zorica, Dzeletović, Zeljko, Vasiljević, Sanja, Adžić, Sladjan, "Forage yield and protein content of different field pea cultivars and oat mixtures grown as winter crops" in Turkish Journal of Field Crops, 24, no. 2 (2019):170-177,
https://doi.org/10.17557/tjfc.643524 . .

TY  - JOUR
AU  - Mandić, Violeta
AU  - Bijelić, Zorica
AU  - Krnjaja, Vesna
AU  - Petričević, Maja
AU  - Simić, Aleksandar
AU  - Krga, Ivan
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5189
AB  - Vojvodina Province is a major alfalfa producer in Serbia with approximately 35.7% of total area and total production share of approximately 43.1%. In this paper, the data on area, production and yield of alfalfa observations from 1947 to 2018 and their variation and trends are analysed. The data indicate wide differences in the harvested area, total production and yield of alfalfa. The analysis of data indicates that harvested area and total production of alfalfa have declined over the past decades. Yield trend shows strong yield increase during 1950-1980 followed by periods of declined growth rates to 1990. After 1990s, dry matter yield has been stagnant. However, the increase, decrease and stagnation in yield are not strictly linear.
AB  - Vojvodina je glavni proizvođač lucerke u Srbiji sa oko 35,7% ukupne površine i udelom proizvodnje od 43,1%. U radu analiziramo podatke o površini, ukupnoj proizvodnji i prinosu lucerke u periodu od 1947. do 2018. godine i njihovim varijacijama i trendovima. Takođe, procenjujemo da li je rast prinosa zastao tokom poslednjih godina. Podaci ukazuju na velike razlike u žetvenoj površini, ukupnoj proizvodnji i prinosu lucerke. Analiza podataka pokazuje da su žetvene površine i ukupna proizvodnja lucerke opali tokom poslednjih decenija. Trend prinosa pokazuje snažan porast prinosa od 1950. do 1980. godine, a zatim sledi period opadanja prinosa do 1990. godine. Nakon 1990. godine, prinos suve materije lucerke stagnira. Međutim, porast, smanjenje i stagnacija u prinosu nisu strogo linearni.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Trend analysis of harvested area, total production and yield of alfalfa in Vojvodina
T1  - Trend analize žetvenih površina, proizvodnje i prinosa lucerke u Vojvodini
EP  - 416
IS  - 4
SP  - 409
VL  - 35
DO  - 10.2298/BAH1904409M
ER  - 

@article{
author = "Mandić, Violeta and Bijelić, Zorica and Krnjaja, Vesna and Petričević, Maja and Simić, Aleksandar and Krga, Ivan",
year = "2019",
abstract = "Vojvodina Province is a major alfalfa producer in Serbia with approximately 35.7% of total area and total production share of approximately 43.1%. In this paper, the data on area, production and yield of alfalfa observations from 1947 to 2018 and their variation and trends are analysed. The data indicate wide differences in the harvested area, total production and yield of alfalfa. The analysis of data indicates that harvested area and total production of alfalfa have declined over the past decades. Yield trend shows strong yield increase during 1950-1980 followed by periods of declined growth rates to 1990. After 1990s, dry matter yield has been stagnant. However, the increase, decrease and stagnation in yield are not strictly linear., Vojvodina je glavni proizvođač lucerke u Srbiji sa oko 35,7% ukupne površine i udelom proizvodnje od 43,1%. U radu analiziramo podatke o površini, ukupnoj proizvodnji i prinosu lucerke u periodu od 1947. do 2018. godine i njihovim varijacijama i trendovima. Takođe, procenjujemo da li je rast prinosa zastao tokom poslednjih godina. Podaci ukazuju na velike razlike u žetvenoj površini, ukupnoj proizvodnji i prinosu lucerke. Analiza podataka pokazuje da su žetvene površine i ukupna proizvodnja lucerke opali tokom poslednjih decenija. Trend prinosa pokazuje snažan porast prinosa od 1950. do 1980. godine, a zatim sledi period opadanja prinosa do 1990. godine. Nakon 1990. godine, prinos suve materije lucerke stagnira. Međutim, porast, smanjenje i stagnacija u prinosu nisu strogo linearni.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Trend analysis of harvested area, total production and yield of alfalfa in Vojvodina, Trend analize žetvenih površina, proizvodnje i prinosa lucerke u Vojvodini",
pages = "416-409",
number = "4",
volume = "35",
doi = "10.2298/BAH1904409M"
}

Mandić, V., Bijelić, Z., Krnjaja, V., Petričević, M., Simić, A.,& Krga, I.. (2019). Trend analysis of harvested area, total production and yield of alfalfa in Vojvodina. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 35(4), 409-416.
https://doi.org/10.2298/BAH1904409M

Mandić V, Bijelić Z, Krnjaja V, Petričević M, Simić A, Krga I. Trend analysis of harvested area, total production and yield of alfalfa in Vojvodina. in Biotechnology in Animal Husbandry. 2019;35(4):409-416.
doi:10.2298/BAH1904409M .

Mandić, Violeta, Bijelić, Zorica, Krnjaja, Vesna, Petričević, Maja, Simić, Aleksandar, Krga, Ivan, "Trend analysis of harvested area, total production and yield of alfalfa in Vojvodina" in Biotechnology in Animal Husbandry, 35, no. 4 (2019):409-416,
https://doi.org/10.2298/BAH1904409M . .

TY  - JOUR
AU  - Stojanović, Bojan
AU  - Simić, Aleksandar
AU  - Grubić, Goran
AU  - Božičković, Aleksa
AU  - Krga, Ivan
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4864
AB  - A cutting experiment was conducted to test the changes in botanical composition, yield and nutritional value of forage, obtained in conditions of simulated rotational spring grazing on permanent grassland. The experiment was carried out on permanent pasture in vicinity of Šabac, Serbia in 2015 included three cuttings as a simulated rotational spring grazing. The highest share of grasses was noted in the first cut and decreased in the second and third cut, with increased forbs participation, and relatively constant percentage of legumes. The highest dry matter (DM) yield was obtained for the first harvest, followed by the second cut, and the lowest forage production was determined for the third harvest, with only 11.04 and 17.42% of the first and second cut yield. There were not found the significant differences between cuts for herbage DM and crude protein content. Markedly lower value for non-protein N concentration (p lt 0.05) was determined in the third cut. The fiber content increased during the grazing season (p lt 0.05), with the highest value determined in the herbage obtained in the second cut. The highest energy values (p lt 0.05) had the herbage produced in the first cut (DM basis), wherein the lowest values were found in the forage from the second harvest. These results indicate that especially herbage yield of analyzed grassland as chemical composition and nutrition value are highly variable during the growing season. The accurately defined optimal period for using is necessary to provide the high-quality forage for grazing animals.
AB  - Istraživanje u kome je košenjem simulirana pregonska ispaša, sprovedeno je u cilju utvrđivanja razlika u botaničkom sastavu, prinosu i hranljivoj vrednosti dobijene zelene mase sa permanentnog pašnjaka, tokom prolećne sezone. Eksperiment je izveden tokom 2015. godine na prirodnom pašnjaku u okolini Šapca, Srbija i uključivao je tri otkosa kao simulaciju pregonske prolećne ispaše. Najveći udeo trava je zabeležen u prvom otkosu, dok je zastupljenost trava u drugom i trećem otkosu bila smanjena, uz istovremeno povećanje učešća zeljanica, i relativno ujednačen udeo leguminoza po ciklusima iskorišćavanja. Najveći prinos suve materije (SM) je utvrđen u prvom ciklusu iskorišćavanja, zatim u drugom, dok je najmanja produkcija zelene mase izmerena u trećem otkosu, samo 11,04 i 17,42% prinosa u prvom odnosno drugom otkosu. Nisu nađene značajne razlike između ciklusa iskorišćavanja u pogledu sadržaja SM i sirovih proteina. Značajno manje učešće neproteinskog N (p lt 0,05) je utvrđeno u biljnoj masi dobijenoj iz trećeg otkosa. Determinisano je povećanje sadržaja vlakana (p lt 0,05) u SM biljne mase, tokom pašne sezone, pri čemu su najveće vrednosti utvrđene u drugom otkosu. Najveću energetsku vrednost (p lt 0,05) imala je zelena krma iz prvog otkosa (u SM), pri čemu je najniži sadržaj iskoristive energije utvrđen u zelenoj masi dobijenoj iz drugog ciklusa iskorišćavanja. Rezultati do kojih se došlo, ukazuju na naročito izraženo variranje prinosa, kao i hemijskog sastava i hranljive vrednosti zelene mase sa permanentnog pašnjaka, tokom prolećne sezone porasta vegetacije. U skladu sa tim, u cilju dobijanja kvalitetne paše za ishranu životinja, neophodno je precizno definisanje optimalnog perioda za iskorišćavanje pašnjaka tokom sezone ispaše.
PB  - Institut za stočarstvo, Beograd
T2  - Biotechnology in Animal Husbandry
T1  - Yield and nutritional value of permanent grassland forage under simulated rotational grazing
T1  - Prinos i hranljiva vrednost zelene mase sa permanentnog travnjaka u uslovima simulacije prolećne ispaše
EP  - 31
IS  - 1
SP  - 21
VL  - 34
DO  - 10.2298/bah1801021S
ER  - 

@article{
author = "Stojanović, Bojan and Simić, Aleksandar and Grubić, Goran and Božičković, Aleksa and Krga, Ivan",
year = "2018",
abstract = "A cutting experiment was conducted to test the changes in botanical composition, yield and nutritional value of forage, obtained in conditions of simulated rotational spring grazing on permanent grassland. The experiment was carried out on permanent pasture in vicinity of Šabac, Serbia in 2015 included three cuttings as a simulated rotational spring grazing. The highest share of grasses was noted in the first cut and decreased in the second and third cut, with increased forbs participation, and relatively constant percentage of legumes. The highest dry matter (DM) yield was obtained for the first harvest, followed by the second cut, and the lowest forage production was determined for the third harvest, with only 11.04 and 17.42% of the first and second cut yield. There were not found the significant differences between cuts for herbage DM and crude protein content. Markedly lower value for non-protein N concentration (p lt 0.05) was determined in the third cut. The fiber content increased during the grazing season (p lt 0.05), with the highest value determined in the herbage obtained in the second cut. The highest energy values (p lt 0.05) had the herbage produced in the first cut (DM basis), wherein the lowest values were found in the forage from the second harvest. These results indicate that especially herbage yield of analyzed grassland as chemical composition and nutrition value are highly variable during the growing season. The accurately defined optimal period for using is necessary to provide the high-quality forage for grazing animals., Istraživanje u kome je košenjem simulirana pregonska ispaša, sprovedeno je u cilju utvrđivanja razlika u botaničkom sastavu, prinosu i hranljivoj vrednosti dobijene zelene mase sa permanentnog pašnjaka, tokom prolećne sezone. Eksperiment je izveden tokom 2015. godine na prirodnom pašnjaku u okolini Šapca, Srbija i uključivao je tri otkosa kao simulaciju pregonske prolećne ispaše. Najveći udeo trava je zabeležen u prvom otkosu, dok je zastupljenost trava u drugom i trećem otkosu bila smanjena, uz istovremeno povećanje učešća zeljanica, i relativno ujednačen udeo leguminoza po ciklusima iskorišćavanja. Najveći prinos suve materije (SM) je utvrđen u prvom ciklusu iskorišćavanja, zatim u drugom, dok je najmanja produkcija zelene mase izmerena u trećem otkosu, samo 11,04 i 17,42% prinosa u prvom odnosno drugom otkosu. Nisu nađene značajne razlike između ciklusa iskorišćavanja u pogledu sadržaja SM i sirovih proteina. Značajno manje učešće neproteinskog N (p lt 0,05) je utvrđeno u biljnoj masi dobijenoj iz trećeg otkosa. Determinisano je povećanje sadržaja vlakana (p lt 0,05) u SM biljne mase, tokom pašne sezone, pri čemu su najveće vrednosti utvrđene u drugom otkosu. Najveću energetsku vrednost (p lt 0,05) imala je zelena krma iz prvog otkosa (u SM), pri čemu je najniži sadržaj iskoristive energije utvrđen u zelenoj masi dobijenoj iz drugog ciklusa iskorišćavanja. Rezultati do kojih se došlo, ukazuju na naročito izraženo variranje prinosa, kao i hemijskog sastava i hranljive vrednosti zelene mase sa permanentnog pašnjaka, tokom prolećne sezone porasta vegetacije. U skladu sa tim, u cilju dobijanja kvalitetne paše za ishranu životinja, neophodno je precizno definisanje optimalnog perioda za iskorišćavanje pašnjaka tokom sezone ispaše.",
publisher = "Institut za stočarstvo, Beograd",
journal = "Biotechnology in Animal Husbandry",
title = "Yield and nutritional value of permanent grassland forage under simulated rotational grazing, Prinos i hranljiva vrednost zelene mase sa permanentnog travnjaka u uslovima simulacije prolećne ispaše",
pages = "31-21",
number = "1",
volume = "34",
doi = "10.2298/bah1801021S"
}

Stojanović, B., Simić, A., Grubić, G., Božičković, A.,& Krga, I.. (2018). Yield and nutritional value of permanent grassland forage under simulated rotational grazing. in Biotechnology in Animal Husbandry
Institut za stočarstvo, Beograd., 34(1), 21-31.
https://doi.org/10.2298/bah1801021S

Stojanović B, Simić A, Grubić G, Božičković A, Krga I. Yield and nutritional value of permanent grassland forage under simulated rotational grazing. in Biotechnology in Animal Husbandry. 2018;34(1):21-31.
doi:10.2298/bah1801021S .

Stojanović, Bojan, Simić, Aleksandar, Grubić, Goran, Božičković, Aleksa, Krga, Ivan, "Yield and nutritional value of permanent grassland forage under simulated rotational grazing" in Biotechnology in Animal Husbandry, 34, no. 1 (2018):21-31,
https://doi.org/10.2298/bah1801021S . .

TY  - JOUR
AU  - Simić, Aleksandar
AU  - Krga, Ivan
AU  - Simić, Milena
AU  - Brankov, Milan
AU  - Vučković, Savo
AU  - Bijelić, Zorica
AU  - Mandić, Violeta
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4884
AB  - Field pea is a high quality fodder crop of a short vegetation period. The production of field peas as a spring crop reduces the risk of yield losses due to unfavourable winter conditions, improves soil characteristics and ensures high quality fodder at the end of the spring. Intercropping with oats is often carried out due to the fact that field pea requires support and both species have similar developmental stages. The field experiment was set up at the Institute for Animal Husbandry in Zemun in 2017, in order to study the forage yield and the possibility of weed control by cultivating the mixture of field pea and oats. Serbian varieties of field pea NS Junior and oats cultivar Dunav were included in the trial, intercropped according to the 'additive model' in two ways: 100:15% and 100:30% pea : oats, when compared to monoculture (100% pea and 100% oats). In the 100:15% intercrop model of field pea and oats , the number of weed units and their fresh and dry weight were lower than in monocultures, while the higher presence of weeds in the 100:30% model was significantly affected by the high number and biomass production of weed species Ambrosia artemisiifolia. The cultivation of oats and field pea in the mixture significantly increased the yield of fresh and dry biomass, when compared to monocultures, while there was no significant difference in yield between the different methods of peas and oats (100:15% and 100:30%) intercropping. The higher share of oats at the crop establishment stage did not increase the forage yield, indicating the dominant contribution of the field pea biomass in the mixture.
AB  - Stočni grašak predstavlja kvalitetan krmni usev kratke vegetacije. Proizvodnjom stočnog graška kao jarog useva, smanjuje se rizik gubitka prinosa usled nepovoljnih zimskih uslova, poboljšavaju karakteristike zemljišta i obezbeđuje kvalitetna krma krajem proleća. Združivanje sa ovsem se često sprovodi zbog potrebe graška za potporom i sličnih fenofaza razvića obe vrste. Poljski ogled je postavljen na Institutu za stočarstvo u Zemunu 2017. godine u cilju ispitivanja prinosa krme i mogućnosti suzbijanja korova gajenjem stočnog graška sa ovsem u smeši. U ogled su bile uključene domaća sorta graška NS Junior i ovas Dunav, koji su združeni po 'aditivnom modelu' na dva načina: 100:15% i 100:30% grašak:ovas, uz poređenje sa setvom čistih useva (100% grašak i 100% ovas). U združenom usevu stočnog graška i ovsa po modelu 100:15%, broj jedinki korova i njihova sveža i suva masa su bile manje nago u pojedinačnim usevima, dok je većoj zastupljenosti korova u modelu združivanja 100:30% veoma doprinela visoka brojnost i produkcija biomase korovske vrste Ambrosia artemisiifolia. Gajenje ovsa i stočnog graška u smeši je značajno povećalo prinos sveže i suve biomase u odnosu na pojedinačno gajene useve, dok između različitog načina združivanja graška i ovsa (100:15% i 100:30%) nije bilo značajnih razlika u prinosu. Veći udeo ovsa pri zasnivanju nije povećao prinos krme, ukazujući na dominantan doprinos biomase stočnog graška u smeši.
PB  - Herbološko društvo Srbije
T2  - Acta herbologica
T1  - The possibilities of weed control in the intercroping system of field pea and oats
T1  - Mogućnost suzbijanja korova združenim gajenjem jarog stočnog graška sa ovsem
EP  - 119
IS  - 2
SP  - 109
VL  - 27
DO  - 10.5937/ActaHerb1802109S
ER  - 

@article{
author = "Simić, Aleksandar and Krga, Ivan and Simić, Milena and Brankov, Milan and Vučković, Savo and Bijelić, Zorica and Mandić, Violeta",
year = "2018",
abstract = "Field pea is a high quality fodder crop of a short vegetation period. The production of field peas as a spring crop reduces the risk of yield losses due to unfavourable winter conditions, improves soil characteristics and ensures high quality fodder at the end of the spring. Intercropping with oats is often carried out due to the fact that field pea requires support and both species have similar developmental stages. The field experiment was set up at the Institute for Animal Husbandry in Zemun in 2017, in order to study the forage yield and the possibility of weed control by cultivating the mixture of field pea and oats. Serbian varieties of field pea NS Junior and oats cultivar Dunav were included in the trial, intercropped according to the 'additive model' in two ways: 100:15% and 100:30% pea : oats, when compared to monoculture (100% pea and 100% oats). In the 100:15% intercrop model of field pea and oats , the number of weed units and their fresh and dry weight were lower than in monocultures, while the higher presence of weeds in the 100:30% model was significantly affected by the high number and biomass production of weed species Ambrosia artemisiifolia. The cultivation of oats and field pea in the mixture significantly increased the yield of fresh and dry biomass, when compared to monocultures, while there was no significant difference in yield between the different methods of peas and oats (100:15% and 100:30%) intercropping. The higher share of oats at the crop establishment stage did not increase the forage yield, indicating the dominant contribution of the field pea biomass in the mixture., Stočni grašak predstavlja kvalitetan krmni usev kratke vegetacije. Proizvodnjom stočnog graška kao jarog useva, smanjuje se rizik gubitka prinosa usled nepovoljnih zimskih uslova, poboljšavaju karakteristike zemljišta i obezbeđuje kvalitetna krma krajem proleća. Združivanje sa ovsem se često sprovodi zbog potrebe graška za potporom i sličnih fenofaza razvića obe vrste. Poljski ogled je postavljen na Institutu za stočarstvo u Zemunu 2017. godine u cilju ispitivanja prinosa krme i mogućnosti suzbijanja korova gajenjem stočnog graška sa ovsem u smeši. U ogled su bile uključene domaća sorta graška NS Junior i ovas Dunav, koji su združeni po 'aditivnom modelu' na dva načina: 100:15% i 100:30% grašak:ovas, uz poređenje sa setvom čistih useva (100% grašak i 100% ovas). U združenom usevu stočnog graška i ovsa po modelu 100:15%, broj jedinki korova i njihova sveža i suva masa su bile manje nago u pojedinačnim usevima, dok je većoj zastupljenosti korova u modelu združivanja 100:30% veoma doprinela visoka brojnost i produkcija biomase korovske vrste Ambrosia artemisiifolia. Gajenje ovsa i stočnog graška u smeši je značajno povećalo prinos sveže i suve biomase u odnosu na pojedinačno gajene useve, dok između različitog načina združivanja graška i ovsa (100:15% i 100:30%) nije bilo značajnih razlika u prinosu. Veći udeo ovsa pri zasnivanju nije povećao prinos krme, ukazujući na dominantan doprinos biomase stočnog graška u smeši.",
publisher = "Herbološko društvo Srbije",
journal = "Acta herbologica",
title = "The possibilities of weed control in the intercroping system of field pea and oats, Mogućnost suzbijanja korova združenim gajenjem jarog stočnog graška sa ovsem",
pages = "119-109",
number = "2",
volume = "27",
doi = "10.5937/ActaHerb1802109S"
}

Simić, A., Krga, I., Simić, M., Brankov, M., Vučković, S., Bijelić, Z.,& Mandić, V.. (2018). The possibilities of weed control in the intercroping system of field pea and oats. in Acta herbologica
Herbološko društvo Srbije., 27(2), 109-119.
https://doi.org/10.5937/ActaHerb1802109S

Simić A, Krga I, Simić M, Brankov M, Vučković S, Bijelić Z, Mandić V. The possibilities of weed control in the intercroping system of field pea and oats. in Acta herbologica. 2018;27(2):109-119.
doi:10.5937/ActaHerb1802109S .

Simić, Aleksandar, Krga, Ivan, Simić, Milena, Brankov, Milan, Vučković, Savo, Bijelić, Zorica, Mandić, Violeta, "The possibilities of weed control in the intercroping system of field pea and oats" in Acta herbologica, 27, no. 2 (2018):109-119,
https://doi.org/10.5937/ActaHerb1802109S . .

TY  - JOUR
AU  - Krga, Ivan
AU  - Simić, Aleksandar
AU  - Vučković, Savo
AU  - Bijelić, Zorica
AU  - Mandić, Violeta
AU  - Tomić, Zorica
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3996
AB  - The aim of researh was to determine the effect of different amounts of nitrogen fertilizer on production and quality traits of pure lucerne crop and its mixtures with cocksfoot and meadow fescue. The research included pure lucerne crop (A1) and its mixtures with cocksfoot and meadow fescue in different combination (A2- 50% lucerne and 50% cocksfoot, A3- 50% lucerne, 25% cocksfoot and 25% meadow fescue, A4- 25% lucerne, 50% cocksfoot and 25% meadow fescue). Sowing was done in the fall with a raw spacing of 20 cm. Fertilization with nitrogen was done in early spring, with two treatment: 50 kg N ha-1, 100 kg N ha-1 and control without fertilization. Type of mixture had significant effect on dry matter yield, crude protein content, ADF, NDF and NFE, while amount of nitrogen fertilizer had effect on dry matter and crude protein yield.
AB  - Cilj ovih istrazivanja je da se ispita uticaj različitih količina azota iz mineralnih đubriva na proizvodne i kvalitativne osobine lucerke u monokulturi i u smeši sa jezevicom i livadskim vijukom. Istraživanja su obuhvatila cist usev lucerke (A1) i njene smeše sa jezevicom i livadskim vijukom u različitim kombinacijama (A2- 50% lucerke i 50% jezevice, A3- 50% lucerke, 25% jezevice i 25% livadskog vijuka, A4- 25% lucerke, 50% jezevice i 25% livadskog vijuka). Jesenja setva je obavljena u redove sa međurednim rastojanjem od 20 cm. Prihrana azotom je obavljena u proleće, sa kretanjem vegetacije u dva tretmana: 50 (B2) i 100 kg ha-1 (B3) i kontrolom bez primene azota (Bl). Vrsta smeše je imala statistički značajnog uticaja na prinos suve mase, sirovih proteina, ADF-a, NDF-a, BEM-a, dok je količina primenjenog azota imala uticaj na prinos suve materije i sirovih proteina.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - The effect of nitrogen fertilization on dry matter yield of lucerne and legume-grass mixtures
T1  - Uticaj azotnog đubrenja na prinos suve materije lucerke i njenih smeša sa ježevicom i livadskim vijukom
EP  - 141
IS  - 1-2
SP  - 133
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3996
ER  - 

@article{
author = "Krga, Ivan and Simić, Aleksandar and Vučković, Savo and Bijelić, Zorica and Mandić, Violeta and Tomić, Zorica",
year = "2015",
abstract = "The aim of researh was to determine the effect of different amounts of nitrogen fertilizer on production and quality traits of pure lucerne crop and its mixtures with cocksfoot and meadow fescue. The research included pure lucerne crop (A1) and its mixtures with cocksfoot and meadow fescue in different combination (A2- 50% lucerne and 50% cocksfoot, A3- 50% lucerne, 25% cocksfoot and 25% meadow fescue, A4- 25% lucerne, 50% cocksfoot and 25% meadow fescue). Sowing was done in the fall with a raw spacing of 20 cm. Fertilization with nitrogen was done in early spring, with two treatment: 50 kg N ha-1, 100 kg N ha-1 and control without fertilization. Type of mixture had significant effect on dry matter yield, crude protein content, ADF, NDF and NFE, while amount of nitrogen fertilizer had effect on dry matter and crude protein yield., Cilj ovih istrazivanja je da se ispita uticaj različitih količina azota iz mineralnih đubriva na proizvodne i kvalitativne osobine lucerke u monokulturi i u smeši sa jezevicom i livadskim vijukom. Istraživanja su obuhvatila cist usev lucerke (A1) i njene smeše sa jezevicom i livadskim vijukom u različitim kombinacijama (A2- 50% lucerke i 50% jezevice, A3- 50% lucerke, 25% jezevice i 25% livadskog vijuka, A4- 25% lucerke, 50% jezevice i 25% livadskog vijuka). Jesenja setva je obavljena u redove sa međurednim rastojanjem od 20 cm. Prihrana azotom je obavljena u proleće, sa kretanjem vegetacije u dva tretmana: 50 (B2) i 100 kg ha-1 (B3) i kontrolom bez primene azota (Bl). Vrsta smeše je imala statistički značajnog uticaja na prinos suve mase, sirovih proteina, ADF-a, NDF-a, BEM-a, dok je količina primenjenog azota imala uticaj na prinos suve materije i sirovih proteina.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "The effect of nitrogen fertilization on dry matter yield of lucerne and legume-grass mixtures, Uticaj azotnog đubrenja na prinos suve materije lucerke i njenih smeša sa ježevicom i livadskim vijukom",
pages = "141-133",
number = "1-2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3996"
}

Krga, I., Simić, A., Vučković, S., Bijelić, Z., Mandić, V.,& Tomić, Z.. (2015). The effect of nitrogen fertilization on dry matter yield of lucerne and legume-grass mixtures. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(1-2), 133-141.
https://hdl.handle.net/21.15107/rcub_agrospace_3996

Krga I, Simić A, Vučković S, Bijelić Z, Mandić V, Tomić Z. The effect of nitrogen fertilization on dry matter yield of lucerne and legume-grass mixtures. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(1-2):133-141.
https://hdl.handle.net/21.15107/rcub_agrospace_3996 .

Krga, Ivan, Simić, Aleksandar, Vučković, Savo, Bijelić, Zorica, Mandić, Violeta, Tomić, Zorica, "The effect of nitrogen fertilization on dry matter yield of lucerne and legume-grass mixtures" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 1-2 (2015):133-141,
https://hdl.handle.net/21.15107/rcub_agrospace_3996 .