TY  - JOUR
AU  - Djordjević, Nenad
AU  - Dinić, Bora
AU  - Grubić, Goran
AU  - Stojanović, Bojan
AU  - Božičković, Aleksa
AU  - Dubljević, Radislav
AU  - Mitrović, Dragoljub
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3934
AB  - The results of experiments where lucerne, maize, sunflower and sorghum were ensiled and the importance of compression level on the quality of obtained silages were presented in the paper. Level of compression is more important in silages with higher dry matter content, with more mature material which is also cut in longer particles. With the higher level of silage mass compression the higher degree of anaerobic condition is provided and therefore higher production of lactic acid with lower production of acetic acid, which results in lower pH values. With higher compression of silages the total loss of nutrients is reduced, although it may be higher when moisture content is higher. That is why with perennial legumes and grasses it is better to wilt the material, while maize and sorghum are cut at the optimum maturity phase, prior to ensiling.
AB  - U radu su prikazani rezultati eksperimenata siliranja lucerke, kukuruza, suncokreta i sirka, i značaj stepena sabijenosti za kvalitet silaža od različitog materijala. Stepen kompresije je utoliko značajniji ukoliko materijal koji se silira ima veći sadržaj suve materije, potiče od zrelijeg materijala i krupnije je seckan. Pri većem stepenu sabijanja silomase u startu se obezbeđuje veći stepen anaerobnosti, te je veća produkcija mlečne i manja produkcija sirćetne kiseline, odnosno potižu se niže pH vrednosti. Pri boljem stepenu sabijenosti smanjuju se i ukupni gubici u hranljivim materijama, mada oni mogu da budu veći kod vlažnijeg materijala. Zato se kod višegodišnjih leguminoza i trava vrši provenjavanje a za kukuruz, suncokret i sirak siliranje se obavlja u optimalnoj fazi zrelosti.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - The importance of compression level as a factor in silage quality
T1  - Značaj stepena sabijenosti kao faktora kvaliteta silaže
EP  - 80
IS  - 3-4
SP  - 73
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_3934
ER  - 

@article{
author = "Djordjević, Nenad and Dinić, Bora and Grubić, Goran and Stojanović, Bojan and Božičković, Aleksa and Dubljević, Radislav and Mitrović, Dragoljub",
year = "2015",
abstract = "The results of experiments where lucerne, maize, sunflower and sorghum were ensiled and the importance of compression level on the quality of obtained silages were presented in the paper. Level of compression is more important in silages with higher dry matter content, with more mature material which is also cut in longer particles. With the higher level of silage mass compression the higher degree of anaerobic condition is provided and therefore higher production of lactic acid with lower production of acetic acid, which results in lower pH values. With higher compression of silages the total loss of nutrients is reduced, although it may be higher when moisture content is higher. That is why with perennial legumes and grasses it is better to wilt the material, while maize and sorghum are cut at the optimum maturity phase, prior to ensiling., U radu su prikazani rezultati eksperimenata siliranja lucerke, kukuruza, suncokreta i sirka, i značaj stepena sabijenosti za kvalitet silaža od različitog materijala. Stepen kompresije je utoliko značajniji ukoliko materijal koji se silira ima veći sadržaj suve materije, potiče od zrelijeg materijala i krupnije je seckan. Pri većem stepenu sabijanja silomase u startu se obezbeđuje veći stepen anaerobnosti, te je veća produkcija mlečne i manja produkcija sirćetne kiseline, odnosno potižu se niže pH vrednosti. Pri boljem stepenu sabijenosti smanjuju se i ukupni gubici u hranljivim materijama, mada oni mogu da budu veći kod vlažnijeg materijala. Zato se kod višegodišnjih leguminoza i trava vrši provenjavanje a za kukuruz, suncokret i sirak siliranje se obavlja u optimalnoj fazi zrelosti.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "The importance of compression level as a factor in silage quality, Značaj stepena sabijenosti kao faktora kvaliteta silaže",
pages = "80-73",
number = "3-4",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_3934"
}

Djordjević, N., Dinić, B., Grubić, G., Stojanović, B., Božičković, A., Dubljević, R.,& Mitrović, D.. (2015). The importance of compression level as a factor in silage quality. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(3-4), 73-80.
https://hdl.handle.net/21.15107/rcub_agrospace_3934

Djordjević N, Dinić B, Grubić G, Stojanović B, Božičković A, Dubljević R, Mitrović D. The importance of compression level as a factor in silage quality. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(3-4):73-80.
https://hdl.handle.net/21.15107/rcub_agrospace_3934 .

Djordjević, Nenad, Dinić, Bora, Grubić, Goran, Stojanović, Bojan, Božičković, Aleksa, Dubljević, Radislav, Mitrović, Dragoljub, "The importance of compression level as a factor in silage quality" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 3-4 (2015):73-80,
https://hdl.handle.net/21.15107/rcub_agrospace_3934 .

TY  - JOUR
AU  - Živković, Milovan
AU  - Komenić, Vaso
AU  - Urošević, Mirko
AU  - Mitrović, Dragoljub
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2499
AB  - Fruit production under arid conditions without irrigation implies the need to employ soil cultivation in the entire orchard with the aim of regulating the water-air regime of the soil, contributing to a favorable soil structure, breaking down the soil crust and successful weeds destruction. Contemporary fruit cultivation practices are compulsory in order to achieve high yields and profitability. Additional soil tillage in orchards has a major impact on the growth and development of plants, yield and fruit quality. Optimal parameters need to be determined when employing mechanization equipment in orchard cultivation in order to make the right choice. The objective of the study was to determine energetic and exploitation parameters of different tractor/machinery tools used in additional soil cultivation. Based on the analysis of the data obtained showing both advantages and disadvantages of some soil cultivation types, it was possible the choose the optimal tool for additional soil tillage. Field trials were carried out in apple (cv. Jonagold, Idared and Melrose) orchards using the two-row Pilar cultural practice at a planting distance 3.80-1.25 x 140-1.80 m. The following tools for additional soil cultivation were used: pseudo plow PP-220, plate cultivator VVT - 223, cultivator IMT-642 and vineyard plow VP-189. The following exploitation indices were monitored: traction force, labor speed, fuel consumption and traction resistance. Based on the results obtained the smallest fuel consumption was registered using pseudo plow (3.78 l/ha) whereby cultivation depth, speed and output registered were 6.31 cm, 7.29 km/ha and 9.07 ha/day respectively.
AB  - Proizvodnja voća u aridnim uslovima bez navodnjavanja zahteva obradu zemljišta na čitavoj površini u cilju regulisanja vodno-vazdušnih osobina zemljišta, stvaranja pogodne strukture, razbijanja pokorice i uništavanja korovske vegetacije. Primena takve tehnologije gajenja voća je neophodna za ostvarenje visokih prinosa i ekonomične proizvodnje. Zbog toga dopunska obrada zemljišta u višegodišnjim zasadima ima značajan uticaj na rast i razviće biljaka, prinos i kvalitet plodova. Pravilan izbor i korišćenje sredstava mehanizacije ima presudan uticaj na intenzivnost voćarske proizvodnje. Napredak u tehnologiji gajenja voća podrazumeva korišćenje najsavremenijih tehničkih sredstava za obavljanje agrotehničkih mera. Za pravilan izbor pojedinih sredstava mehanizacije značajno je utvrditi optimalne parametre njihove primene u obradi zemljišta. Utvrđivanje energetskih i eksploatacionih parametara rada različitih traktorsko-mašinskih agregata pri dopunskoj obradi predstavlja predmet ovog istraživanja. Analiza dobijenih podataka, koji ukazuju na prednosti i nedostatke pojedinih načina obrade omogućuje izbor optimalnog agregata za dopunsku obradu u zasadima. Rezultati ispitivanja sredstava mahanizacije u dopunskoj obradi međuredne površine, pokazuju da je najmanja potrošnja goriva ostvarena kod čizel pluga (3,78 l/ha). Njegovim korišćenjem postignuta je dubina rada 6,31 cm, brzina 7,29 km/h i ostvaren učinak od 9,07 ha/dan.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Exploitation indicators of TMA for additional soil tillage in orchards
T1  - Eksploatacioni pokazatelji TMA za dopunsku obradu zemljišta u višegodišnjim zasadima
EP  - 67
IS  - 3
SP  - 59
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2499
ER  - 

@article{
author = "Živković, Milovan and Komenić, Vaso and Urošević, Mirko and Mitrović, Dragoljub",
year = "2011",
abstract = "Fruit production under arid conditions without irrigation implies the need to employ soil cultivation in the entire orchard with the aim of regulating the water-air regime of the soil, contributing to a favorable soil structure, breaking down the soil crust and successful weeds destruction. Contemporary fruit cultivation practices are compulsory in order to achieve high yields and profitability. Additional soil tillage in orchards has a major impact on the growth and development of plants, yield and fruit quality. Optimal parameters need to be determined when employing mechanization equipment in orchard cultivation in order to make the right choice. The objective of the study was to determine energetic and exploitation parameters of different tractor/machinery tools used in additional soil cultivation. Based on the analysis of the data obtained showing both advantages and disadvantages of some soil cultivation types, it was possible the choose the optimal tool for additional soil tillage. Field trials were carried out in apple (cv. Jonagold, Idared and Melrose) orchards using the two-row Pilar cultural practice at a planting distance 3.80-1.25 x 140-1.80 m. The following tools for additional soil cultivation were used: pseudo plow PP-220, plate cultivator VVT - 223, cultivator IMT-642 and vineyard plow VP-189. The following exploitation indices were monitored: traction force, labor speed, fuel consumption and traction resistance. Based on the results obtained the smallest fuel consumption was registered using pseudo plow (3.78 l/ha) whereby cultivation depth, speed and output registered were 6.31 cm, 7.29 km/ha and 9.07 ha/day respectively., Proizvodnja voća u aridnim uslovima bez navodnjavanja zahteva obradu zemljišta na čitavoj površini u cilju regulisanja vodno-vazdušnih osobina zemljišta, stvaranja pogodne strukture, razbijanja pokorice i uništavanja korovske vegetacije. Primena takve tehnologije gajenja voća je neophodna za ostvarenje visokih prinosa i ekonomične proizvodnje. Zbog toga dopunska obrada zemljišta u višegodišnjim zasadima ima značajan uticaj na rast i razviće biljaka, prinos i kvalitet plodova. Pravilan izbor i korišćenje sredstava mehanizacije ima presudan uticaj na intenzivnost voćarske proizvodnje. Napredak u tehnologiji gajenja voća podrazumeva korišćenje najsavremenijih tehničkih sredstava za obavljanje agrotehničkih mera. Za pravilan izbor pojedinih sredstava mehanizacije značajno je utvrditi optimalne parametre njihove primene u obradi zemljišta. Utvrđivanje energetskih i eksploatacionih parametara rada različitih traktorsko-mašinskih agregata pri dopunskoj obradi predstavlja predmet ovog istraživanja. Analiza dobijenih podataka, koji ukazuju na prednosti i nedostatke pojedinih načina obrade omogućuje izbor optimalnog agregata za dopunsku obradu u zasadima. Rezultati ispitivanja sredstava mahanizacije u dopunskoj obradi međuredne površine, pokazuju da je najmanja potrošnja goriva ostvarena kod čizel pluga (3,78 l/ha). Njegovim korišćenjem postignuta je dubina rada 6,31 cm, brzina 7,29 km/h i ostvaren učinak od 9,07 ha/dan.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Exploitation indicators of TMA for additional soil tillage in orchards, Eksploatacioni pokazatelji TMA za dopunsku obradu zemljišta u višegodišnjim zasadima",
pages = "67-59",
number = "3",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2499"
}

Živković, M., Komenić, V., Urošević, M.,& Mitrović, D.. (2011). Exploitation indicators of TMA for additional soil tillage in orchards. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 36(3), 59-67.
https://hdl.handle.net/21.15107/rcub_agrospace_2499

Živković M, Komenić V, Urošević M, Mitrović D. Exploitation indicators of TMA for additional soil tillage in orchards. in Poljoprivredna tehnika. 2011;36(3):59-67.
https://hdl.handle.net/21.15107/rcub_agrospace_2499 .

Živković, Milovan, Komenić, Vaso, Urošević, Mirko, Mitrović, Dragoljub, "Exploitation indicators of TMA for additional soil tillage in orchards" in Poljoprivredna tehnika, 36, no. 3 (2011):59-67,
https://hdl.handle.net/21.15107/rcub_agrospace_2499 .

TY  - JOUR
AU  - Manojlović, Radomir
AU  - Mitrović, Dragoljub
AU  - Bulatović, Ivan
AU  - Urošević, Mirko
AU  - Živković, Milovan
PY  - 2011
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2480
AB  - Harvesting represents one of the most challenging problems in managing vineyards. 'Quality picking' is considered when it is done in the period when the grapes are suitable for its purposes, especially related with the soluble solid content, and the appropriate sugar/acids relation. Hand picking costs represent around 45% of total labor per hectare, which is equivalent of 30-50 working days for one laborer. Study of the mechanical picking of grapevine cultivars intended for winemaking by applying dragged combine 'Volentieri' ensemble with tractor 'New Holland Tn 95 F' are shown in this paper. Experiment was done in the Ćemovsko Field's production vineyards, with cultivars Vranac and Župljanka. Grapevine planting was done on the planting distance 2.6 x 0.7 m and 2.6 x 1 m, respectively. Row length was 168 m, with training system modified horizontal bilateral cordon with green strip width in grape area 50-60 cm. Aggregate's working results of the investigation are showing that average running speed was 4.8 km/h, and output 0.62 ha/h, i.e. 4.98 ha/day in cultivar Vranac. In cultivar Župljanka following values were achieved: running speed was 4.1 km/h, output 0.53 ha/h i.e. 4.24 ha/day. Turning time in headlands of examined harvester was 30 - 32 s. It was necessary to reduce green leaves just before harvesting, especially in the zone bunches, in order to decrease slowdowns and losses. Dragged combines, except in larger plantations, have commercial adequacy both in smaller households.
AB  - Jedan od najsloženijih problema u obavljanju radnih operacija u vinogradarstvu predstavlja proces berbe grožđa. Kvalitetna berba se smatra ona koja se obavi u periodu kada sastav grožđa odgovara njegovoj nameni, što se pre svega odnosi na suvu materiju i odgovarajući odnos šećera i kiselina. Troškovi ručne berbe grožđa čine oko 45% od ukupnog utroška ljudskog rada po hektaru što odgovara 30-50 radnih dana jednog radnika. U radu su prikazani rezultati ispitivanja mehanizovane berbe vinskih sorti grožđa, primjenom vučenog kombajna 'Volentieri' u agregatu s traktorom 'New Holland Tn 95 F'. Ispitivanja su obavljena na proizvodnim površinama Ćemovskog polja, sorte Vranac i Župljanka. Sadnja loze je obavljena na međurednom i rednom rastojanju 2,6 x 0,7 m i 2,6 x 1 m. Dužina redova je iznosila 168 m a zastupljen uzgojni sistem je modifikovana horizontalna dvokraka kordunica sa širinom zelenog pojasa u zoni grožđa 50-60 cm. Rezultati ispitivanja agregata u radu pokazuju da je ostvarena prosječna radna brzina od 4,8 km/h, a učinak 0,62 ha/h tj. 4,98 ha/dan - sorta Vranac. Kod sorte Župljanka ostvarene su vrednosti: brzina rada 4,1 km/h, učinak 0,53 ha/h tj. 4,24 ha/dan. Pri radu kombajna javljaju se gubici od 36 kg/ha kod sorte Vranac, a 70 kg/ha kod sorte Župljanka. Vreme okretanja na uvratinama ispitivanog kombajna je iznosilo 30 -32 s. Neposredno pred berbu neophodno je zelenom rezidbom smanjiti lisnu masu posebno u zoni grožđa kako bi se smanjili zastoji u berbi i gubici. Vučeni kombajni, osim u većim plantažnim zasadima imaju ekonomsku opravdanost i na manjim posjedima.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Operating parameters of dragged combines 'Volentieri VG 2000/2TA' for grapevine harvesting
T1  - Eksploatacioni parametri vučenog kombajna za berbu grožđa Volentieri VG 2000/2TA
EP  - 108
IS  - 3
SP  - 99
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2480
ER  - 

@article{
author = "Manojlović, Radomir and Mitrović, Dragoljub and Bulatović, Ivan and Urošević, Mirko and Živković, Milovan",
year = "2011",
abstract = "Harvesting represents one of the most challenging problems in managing vineyards. 'Quality picking' is considered when it is done in the period when the grapes are suitable for its purposes, especially related with the soluble solid content, and the appropriate sugar/acids relation. Hand picking costs represent around 45% of total labor per hectare, which is equivalent of 30-50 working days for one laborer. Study of the mechanical picking of grapevine cultivars intended for winemaking by applying dragged combine 'Volentieri' ensemble with tractor 'New Holland Tn 95 F' are shown in this paper. Experiment was done in the Ćemovsko Field's production vineyards, with cultivars Vranac and Župljanka. Grapevine planting was done on the planting distance 2.6 x 0.7 m and 2.6 x 1 m, respectively. Row length was 168 m, with training system modified horizontal bilateral cordon with green strip width in grape area 50-60 cm. Aggregate's working results of the investigation are showing that average running speed was 4.8 km/h, and output 0.62 ha/h, i.e. 4.98 ha/day in cultivar Vranac. In cultivar Župljanka following values were achieved: running speed was 4.1 km/h, output 0.53 ha/h i.e. 4.24 ha/day. Turning time in headlands of examined harvester was 30 - 32 s. It was necessary to reduce green leaves just before harvesting, especially in the zone bunches, in order to decrease slowdowns and losses. Dragged combines, except in larger plantations, have commercial adequacy both in smaller households., Jedan od najsloženijih problema u obavljanju radnih operacija u vinogradarstvu predstavlja proces berbe grožđa. Kvalitetna berba se smatra ona koja se obavi u periodu kada sastav grožđa odgovara njegovoj nameni, što se pre svega odnosi na suvu materiju i odgovarajući odnos šećera i kiselina. Troškovi ručne berbe grožđa čine oko 45% od ukupnog utroška ljudskog rada po hektaru što odgovara 30-50 radnih dana jednog radnika. U radu su prikazani rezultati ispitivanja mehanizovane berbe vinskih sorti grožđa, primjenom vučenog kombajna 'Volentieri' u agregatu s traktorom 'New Holland Tn 95 F'. Ispitivanja su obavljena na proizvodnim površinama Ćemovskog polja, sorte Vranac i Župljanka. Sadnja loze je obavljena na međurednom i rednom rastojanju 2,6 x 0,7 m i 2,6 x 1 m. Dužina redova je iznosila 168 m a zastupljen uzgojni sistem je modifikovana horizontalna dvokraka kordunica sa širinom zelenog pojasa u zoni grožđa 50-60 cm. Rezultati ispitivanja agregata u radu pokazuju da je ostvarena prosječna radna brzina od 4,8 km/h, a učinak 0,62 ha/h tj. 4,98 ha/dan - sorta Vranac. Kod sorte Župljanka ostvarene su vrednosti: brzina rada 4,1 km/h, učinak 0,53 ha/h tj. 4,24 ha/dan. Pri radu kombajna javljaju se gubici od 36 kg/ha kod sorte Vranac, a 70 kg/ha kod sorte Župljanka. Vreme okretanja na uvratinama ispitivanog kombajna je iznosilo 30 -32 s. Neposredno pred berbu neophodno je zelenom rezidbom smanjiti lisnu masu posebno u zoni grožđa kako bi se smanjili zastoji u berbi i gubici. Vučeni kombajni, osim u većim plantažnim zasadima imaju ekonomsku opravdanost i na manjim posjedima.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Operating parameters of dragged combines 'Volentieri VG 2000/2TA' for grapevine harvesting, Eksploatacioni parametri vučenog kombajna za berbu grožđa Volentieri VG 2000/2TA",
pages = "108-99",
number = "3",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2480"
}

Manojlović, R., Mitrović, D., Bulatović, I., Urošević, M.,& Živković, M.. (2011). Operating parameters of dragged combines 'Volentieri VG 2000/2TA' for grapevine harvesting. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 36(3), 99-108.
https://hdl.handle.net/21.15107/rcub_agrospace_2480

Manojlović R, Mitrović D, Bulatović I, Urošević M, Živković M. Operating parameters of dragged combines 'Volentieri VG 2000/2TA' for grapevine harvesting. in Poljoprivredna tehnika. 2011;36(3):99-108.
https://hdl.handle.net/21.15107/rcub_agrospace_2480 .

Manojlović, Radomir, Mitrović, Dragoljub, Bulatović, Ivan, Urošević, Mirko, Živković, Milovan, "Operating parameters of dragged combines 'Volentieri VG 2000/2TA' for grapevine harvesting" in Poljoprivredna tehnika, 36, no. 3 (2011):99-108,
https://hdl.handle.net/21.15107/rcub_agrospace_2480 .