TY  - JOUR
AU  - Koprivica, Ranko
AU  - Veljković, Biljana
AU  - Stanimirović, Nebojša
AU  - Topisirović, Goran
PY  - 2009
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1905
AB  - The research was conducted on commercial family farms in the region of Western Serbia. The objective of this study was to evaluate the performance characteristics and operating reliability of the used/old self-propelled John Deere 5820 harvester owned by the Mitrovic Brothers family farm. The harvester was used for preparing ZP-735 hybrid maize silage, with the average maize yield and forage moisture being 24.35 t/ha and 60%, respectively. Under operating conditions, at the lowest operating speed of 2.99 km/ha, the harvester had a harvesting capacity of 28.55 t/ha. With an increase in operating speed to 4.5 km/ha, the harvesting performance was raised to 37.40 t/h. During the season, the harvester ensiled 125 ha at an average daily efficiency of 7.25 ha. The harvester operated in a high-quality and reliable manner without any major breakdown, which suggested that used harvesters, if properly maintained, can exhibit good operational efficiency. Ensiling costs at the test field on the commercial farm were 1.54 diners per kilogram.
AB  - Istraživanja su obavljena na porodičnim komercijalnim farmama užeg područja Zapadne Srbije. Sa ciljem da se utvrde eksploatacione karakteristike i pouzdanost u radu polovnog samohodnog kombajna John Deere 5820 u vlasništvu porodične farme 'Braća Mitrović'. Kombajn je korišćen u procesu siliranja hibridnog kukuruza ZP-735, čiji je prosečan prinos iznosio 24,35 t/ha, a vlažnost mase je bila 60%. Kombajn je u proizvodnim uslovima rada pri najmanjoj brzini od 2,99 km/h ostvario propusnu moć od 28,55 t/h. Sa povećanjem brzine rada na 4,5 km/h ostvarena je veća produktivnost, koja je iznosila 37,40 t/h. U toku sezone kombajn je silirao 125 ha sa prosečnim dnevnim učinkom od 7,25 ha. Kombajn je kvalitetno i pouzdano radio bez većih kvarova, što ukazuje na to da i polovni kombajni ukoliko se pravilno održavaju mogu da ostvare dobar radni efekat. Troškovi siliranja na komercijalnoj farmi, na ispitivanim parcelama iznosili su 1,54 dinara po kilogramu.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Performance characteristics of the John Deere 5820 harvester used for preparing maize silage for dairy cattle on family farms
T1  - Eksplatacione karakteristike kombajna John Deere 5820 u pripremi kukuruzne silaže za muzne krave na porodičnim farmama
EP  - 30
IS  - 3
SP  - 23
VL  - 34
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1905
ER  - 

@article{
author = "Koprivica, Ranko and Veljković, Biljana and Stanimirović, Nebojša and Topisirović, Goran",
year = "2009",
abstract = "The research was conducted on commercial family farms in the region of Western Serbia. The objective of this study was to evaluate the performance characteristics and operating reliability of the used/old self-propelled John Deere 5820 harvester owned by the Mitrovic Brothers family farm. The harvester was used for preparing ZP-735 hybrid maize silage, with the average maize yield and forage moisture being 24.35 t/ha and 60%, respectively. Under operating conditions, at the lowest operating speed of 2.99 km/ha, the harvester had a harvesting capacity of 28.55 t/ha. With an increase in operating speed to 4.5 km/ha, the harvesting performance was raised to 37.40 t/h. During the season, the harvester ensiled 125 ha at an average daily efficiency of 7.25 ha. The harvester operated in a high-quality and reliable manner without any major breakdown, which suggested that used harvesters, if properly maintained, can exhibit good operational efficiency. Ensiling costs at the test field on the commercial farm were 1.54 diners per kilogram., Istraživanja su obavljena na porodičnim komercijalnim farmama užeg područja Zapadne Srbije. Sa ciljem da se utvrde eksploatacione karakteristike i pouzdanost u radu polovnog samohodnog kombajna John Deere 5820 u vlasništvu porodične farme 'Braća Mitrović'. Kombajn je korišćen u procesu siliranja hibridnog kukuruza ZP-735, čiji je prosečan prinos iznosio 24,35 t/ha, a vlažnost mase je bila 60%. Kombajn je u proizvodnim uslovima rada pri najmanjoj brzini od 2,99 km/h ostvario propusnu moć od 28,55 t/h. Sa povećanjem brzine rada na 4,5 km/h ostvarena je veća produktivnost, koja je iznosila 37,40 t/h. U toku sezone kombajn je silirao 125 ha sa prosečnim dnevnim učinkom od 7,25 ha. Kombajn je kvalitetno i pouzdano radio bez većih kvarova, što ukazuje na to da i polovni kombajni ukoliko se pravilno održavaju mogu da ostvare dobar radni efekat. Troškovi siliranja na komercijalnoj farmi, na ispitivanim parcelama iznosili su 1,54 dinara po kilogramu.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Performance characteristics of the John Deere 5820 harvester used for preparing maize silage for dairy cattle on family farms, Eksplatacione karakteristike kombajna John Deere 5820 u pripremi kukuruzne silaže za muzne krave na porodičnim farmama",
pages = "30-23",
number = "3",
volume = "34",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1905"
}

Koprivica, R., Veljković, B., Stanimirović, N.,& Topisirović, G.. (2009). Performance characteristics of the John Deere 5820 harvester used for preparing maize silage for dairy cattle on family farms. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 34(3), 23-30.
https://hdl.handle.net/21.15107/rcub_agrospace_1905

Koprivica R, Veljković B, Stanimirović N, Topisirović G. Performance characteristics of the John Deere 5820 harvester used for preparing maize silage for dairy cattle on family farms. in Poljoprivredna tehnika. 2009;34(3):23-30.
https://hdl.handle.net/21.15107/rcub_agrospace_1905 .

Koprivica, Ranko, Veljković, Biljana, Stanimirović, Nebojša, Topisirović, Goran, "Performance characteristics of the John Deere 5820 harvester used for preparing maize silage for dairy cattle on family farms" in Poljoprivredna tehnika, 34, no. 3 (2009):23-30,
https://hdl.handle.net/21.15107/rcub_agrospace_1905 .

TY  - JOUR
AU  - Stanimirović, Nebojša
AU  - Koprivica, Ranko
AU  - Veljković, Biljana
AU  - Topisirović, Goran
PY  - 2008
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1737
AB  - Results of quantitative and qualitative maize plants analysis were presented in the paper. Analyzed maize plants were cut and chopped by hand, into pieces of app. 5 mm. In every separate sample plant part content of dry matter was measured. By qualitative analysis was determined the content of crude proteins, crude fats, crude cellulose and crude ash, and the values of BEM and metabolic net energy were calculated. Besides, additionally were conducted measurements of: plant height, stalk thickness, cob height, plants number, yield per hectare, moving speed, cut height, time duration of trailer loading, trailer weight and harvester efficiency. Apart of those, losses of chopped material during the trailer loading were measured. Examined maize hybrids contained, in the stalk up to the height of 20 cm, 83,34% moisture and less metabolic energy, only 1,47 MJ/kg, compared to the rest of the plant with 3,53 MJ/kg. High correlation dependency between moving speed and cutting height was found. It was concluded that, during the harvesting, is not necessary to limit the working speed because of losses caused by increased cutting height. Increased cutting height from 12 to 20 cm would cause increment of the working speed, mass flow and harvester efficiency. Transport trailers must have large volume of transport space because of lower transport and loading losses. The chopping length that harvester achieved has fulfilled the technological requirements.
AB  - U radu su prikazani rezultati kvantitativne i kvalitativne analize biljaka zastupljenih hibrida kukuruza. Biljke kukuruza za kvantitativnu i kvalitativnu analizu su ručno odsecane i usitnjavane na oko 5 mm. U svakom od navedenih delova uzorka određen je sadržaj suvih materija. Kvalitativnom analizom određivan je sadržaj sirovih proteina, sirovih masti, sirove celuloze i sirovog pepela, a računskim putem određene su vrednosti za BEM i metabolička neto energija. Pored toga izvršena su još i merenja: visine biljaka, debljine stabla, visina klipa, broj biljaka, prinos po hektaru, brzina kretanja, visina reza, vreme utovara prikolice, težina prikolice, propusna moć i učinak kombajna. Posebno su mereni gubici iseckane mase pri utovaru u transportno sredstvo. Ispitivani hibridi kukuruza u stablu do visine od 20 cm sadrže 83,34% vlage i najmanje neto metaboličke energije, svega 1,47 MJ/kg u odnosu na ostali deo biljke sa 3,53 MJ/kg. Postoji visoka korelaciona zavisnost između brzine kretanja i visine reza. Zaključeno je da kombajniranjem ne treba ograničavati radnu brzinu zbog gubitaka na povećanu visinu reza. Povećanje visine reza sa 12-20 cm povećala bi se radna brzina, protok mase i učinak kombajna. Transportna sredstva moraju imati veliku zapreminu utovarnog prostora jer su manji gubici pri utovaru i transportu. Ostvarenom dužinom seckanja kombajn je zadovoljio tehnološke zahteve.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Work quality of silage harvester Fortshritte-286
T1  - Kvalitet rada silažnog kombajna Fortshritte-286
EP  - 17
IS  - 3
SP  - 11
VL  - 33
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1737
ER  - 

@article{
author = "Stanimirović, Nebojša and Koprivica, Ranko and Veljković, Biljana and Topisirović, Goran",
year = "2008",
abstract = "Results of quantitative and qualitative maize plants analysis were presented in the paper. Analyzed maize plants were cut and chopped by hand, into pieces of app. 5 mm. In every separate sample plant part content of dry matter was measured. By qualitative analysis was determined the content of crude proteins, crude fats, crude cellulose and crude ash, and the values of BEM and metabolic net energy were calculated. Besides, additionally were conducted measurements of: plant height, stalk thickness, cob height, plants number, yield per hectare, moving speed, cut height, time duration of trailer loading, trailer weight and harvester efficiency. Apart of those, losses of chopped material during the trailer loading were measured. Examined maize hybrids contained, in the stalk up to the height of 20 cm, 83,34% moisture and less metabolic energy, only 1,47 MJ/kg, compared to the rest of the plant with 3,53 MJ/kg. High correlation dependency between moving speed and cutting height was found. It was concluded that, during the harvesting, is not necessary to limit the working speed because of losses caused by increased cutting height. Increased cutting height from 12 to 20 cm would cause increment of the working speed, mass flow and harvester efficiency. Transport trailers must have large volume of transport space because of lower transport and loading losses. The chopping length that harvester achieved has fulfilled the technological requirements., U radu su prikazani rezultati kvantitativne i kvalitativne analize biljaka zastupljenih hibrida kukuruza. Biljke kukuruza za kvantitativnu i kvalitativnu analizu su ručno odsecane i usitnjavane na oko 5 mm. U svakom od navedenih delova uzorka određen je sadržaj suvih materija. Kvalitativnom analizom određivan je sadržaj sirovih proteina, sirovih masti, sirove celuloze i sirovog pepela, a računskim putem određene su vrednosti za BEM i metabolička neto energija. Pored toga izvršena su još i merenja: visine biljaka, debljine stabla, visina klipa, broj biljaka, prinos po hektaru, brzina kretanja, visina reza, vreme utovara prikolice, težina prikolice, propusna moć i učinak kombajna. Posebno su mereni gubici iseckane mase pri utovaru u transportno sredstvo. Ispitivani hibridi kukuruza u stablu do visine od 20 cm sadrže 83,34% vlage i najmanje neto metaboličke energije, svega 1,47 MJ/kg u odnosu na ostali deo biljke sa 3,53 MJ/kg. Postoji visoka korelaciona zavisnost između brzine kretanja i visine reza. Zaključeno je da kombajniranjem ne treba ograničavati radnu brzinu zbog gubitaka na povećanu visinu reza. Povećanje visine reza sa 12-20 cm povećala bi se radna brzina, protok mase i učinak kombajna. Transportna sredstva moraju imati veliku zapreminu utovarnog prostora jer su manji gubici pri utovaru i transportu. Ostvarenom dužinom seckanja kombajn je zadovoljio tehnološke zahteve.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Work quality of silage harvester Fortshritte-286, Kvalitet rada silažnog kombajna Fortshritte-286",
pages = "17-11",
number = "3",
volume = "33",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1737"
}

Stanimirović, N., Koprivica, R., Veljković, B.,& Topisirović, G.. (2008). Work quality of silage harvester Fortshritte-286. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 33(3), 11-17.
https://hdl.handle.net/21.15107/rcub_agrospace_1737

Stanimirović N, Koprivica R, Veljković B, Topisirović G. Work quality of silage harvester Fortshritte-286. in Poljoprivredna tehnika. 2008;33(3):11-17.
https://hdl.handle.net/21.15107/rcub_agrospace_1737 .

Stanimirović, Nebojša, Koprivica, Ranko, Veljković, Biljana, Topisirović, Goran, "Work quality of silage harvester Fortshritte-286" in Poljoprivredna tehnika, 33, no. 3 (2008):11-17,
https://hdl.handle.net/21.15107/rcub_agrospace_1737 .

TY  - JOUR
AU  - Topisirović, Goran
AU  - Koprivica, Ranko
AU  - Radivojević, Dušan
AU  - Stanimirović, Nebojša
PY  - 2007
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/1431
AB  - The paper presents results of activities for improving feed preparation practices in some parts of Western Serbia characterized by highly extensive livestock production. Main improvements were achieved by farmer education and introduction of a number of specialized machines for use in upland regions. The machinery was specialized for bale grass ensilage. For this purpose, six groups of farmers were established in the region. Trained and authorized for operating the machinery, the farmers were obliged to properly use and maintain it, as well as to train other farmers. The investigations covered a line of grass ensilage machines, being as follows: a rotary mower a rotary hay collector, a roll baler and a silage bale wrapper. The study results refer to transport time, effective work hours, total work hours performance etc. The paper presents the results of monitoring the performance of the machines and the farmer groups during the first operating season. Enlargement of the initially formed groups is further expected to take place through further farmer involvement, along with the registration of machinery rings and the achievement of their full sustainability and work independence.
AB  - U radu su prikazani rezultati aktivnosti koje su preduzete u nekim delovima zapadne Srbije, sa izrazito ekstenzivnom stočarskom proizvodnjom, na unapređenju mera i postupaka pripreme stočne hrane. Unapređenja su postignuta edukacijom farmera i uvođenjem u primenu većeg broja mašina namenjenih za rad u brdsko-planinskom području. Mašine su namenjene za uvođenje postupak pripreme travne silaže u balama. Za tu svrhu je u regionu osnovano šest grupa farmera koji su, kao obučeni i ovlašćeni rukovaoci, prihvatili obavezu primene mašina, pravilne eksploatacije i održavanja, kao i obuke drugih farmera za rad. Ispitivanjima je obuhvaćena linija mašina za spremanje travne silaže i to: rotaciona kosačica, rotacioni sakupljač sena, rol baler i omotač bala u foliju. Rezultati ispitivanja se odnose na vreme transporta, efektivno radno vreme, ukupno radno vreme, učinak i dr. Ovde su prikazani rezultati praćenja rada mašina i grupa farmera tokom prve sezone primene. Nakon ovoga se očekuje proširenje postojećih grupa daljim ulaganjem samih farmera registrovanje mašinskih prstenova i postizanje održivosti i samostalnosti rada uduženja.
PB  - Institut za ratarstvo i povrtarstvo, Novi Sad
T2  - Zbornik radova Instituta za ratarstvo i povrtarstvo
T1  - First results of machinery ring establishment and ensilage machine use in an upland region
T1  - Prvi rezultati osnivanja mašinskih prstemova i primene mašina za pripremu travne silaže u brdsko-planinskom području
EP  - 555
IS  - 1
SP  - 547
VL  - 44
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_1431
ER  - 

@article{
author = "Topisirović, Goran and Koprivica, Ranko and Radivojević, Dušan and Stanimirović, Nebojša",
year = "2007",
abstract = "The paper presents results of activities for improving feed preparation practices in some parts of Western Serbia characterized by highly extensive livestock production. Main improvements were achieved by farmer education and introduction of a number of specialized machines for use in upland regions. The machinery was specialized for bale grass ensilage. For this purpose, six groups of farmers were established in the region. Trained and authorized for operating the machinery, the farmers were obliged to properly use and maintain it, as well as to train other farmers. The investigations covered a line of grass ensilage machines, being as follows: a rotary mower a rotary hay collector, a roll baler and a silage bale wrapper. The study results refer to transport time, effective work hours, total work hours performance etc. The paper presents the results of monitoring the performance of the machines and the farmer groups during the first operating season. Enlargement of the initially formed groups is further expected to take place through further farmer involvement, along with the registration of machinery rings and the achievement of their full sustainability and work independence., U radu su prikazani rezultati aktivnosti koje su preduzete u nekim delovima zapadne Srbije, sa izrazito ekstenzivnom stočarskom proizvodnjom, na unapređenju mera i postupaka pripreme stočne hrane. Unapređenja su postignuta edukacijom farmera i uvođenjem u primenu većeg broja mašina namenjenih za rad u brdsko-planinskom području. Mašine su namenjene za uvođenje postupak pripreme travne silaže u balama. Za tu svrhu je u regionu osnovano šest grupa farmera koji su, kao obučeni i ovlašćeni rukovaoci, prihvatili obavezu primene mašina, pravilne eksploatacije i održavanja, kao i obuke drugih farmera za rad. Ispitivanjima je obuhvaćena linija mašina za spremanje travne silaže i to: rotaciona kosačica, rotacioni sakupljač sena, rol baler i omotač bala u foliju. Rezultati ispitivanja se odnose na vreme transporta, efektivno radno vreme, ukupno radno vreme, učinak i dr. Ovde su prikazani rezultati praćenja rada mašina i grupa farmera tokom prve sezone primene. Nakon ovoga se očekuje proširenje postojećih grupa daljim ulaganjem samih farmera registrovanje mašinskih prstenova i postizanje održivosti i samostalnosti rada uduženja.",
publisher = "Institut za ratarstvo i povrtarstvo, Novi Sad",
journal = "Zbornik radova Instituta za ratarstvo i povrtarstvo",
title = "First results of machinery ring establishment and ensilage machine use in an upland region, Prvi rezultati osnivanja mašinskih prstemova i primene mašina za pripremu travne silaže u brdsko-planinskom području",
pages = "555-547",
number = "1",
volume = "44",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_1431"
}

Topisirović, G., Koprivica, R., Radivojević, D.,& Stanimirović, N.. (2007). First results of machinery ring establishment and ensilage machine use in an upland region. in Zbornik radova Instituta za ratarstvo i povrtarstvo
Institut za ratarstvo i povrtarstvo, Novi Sad., 44(1), 547-555.
https://hdl.handle.net/21.15107/rcub_agrospace_1431

Topisirović G, Koprivica R, Radivojević D, Stanimirović N. First results of machinery ring establishment and ensilage machine use in an upland region. in Zbornik radova Instituta za ratarstvo i povrtarstvo. 2007;44(1):547-555.
https://hdl.handle.net/21.15107/rcub_agrospace_1431 .

Topisirović, Goran, Koprivica, Ranko, Radivojević, Dušan, Stanimirović, Nebojša, "First results of machinery ring establishment and ensilage machine use in an upland region" in Zbornik radova Instituta za ratarstvo i povrtarstvo, 44, no. 1 (2007):547-555,
https://hdl.handle.net/21.15107/rcub_agrospace_1431 .