TY  - JOUR
AU  - Ponjičan, Ondrej
AU  - Bajkin, Anđelko
AU  - Nešić, Ljiljana
AU  - Belić, Milivoj
AU  - Vasin, Jovica
PY  - 2009
UR  - http://fiver.ifvcns.rs/handle/123456789/686
AB  - In order to establish the optimum tillage method for root vegetables, we studied how soil volume weight was affected by cultivation using a rotary tiller and how these effects depended on the direction of the rotor's revolution. An adapted tiller was studied in field conditions on three plots (a stubble field, a soybean field, and ploughed land). The samples were taken in accordance with the ISO 7256/1 standard. Statistically significant differences among the treatments were determined by the F test ANOVA and Duncan's test with a significance threshold of 5%. Prior to tillage, bulk density down to 10 cm depth was as follows: 1.132-1.433 g/cm3 for stubble field; 1.286-1.442 g/cm3 for soybean field; and 1.043-1.309 g/cm3 for ploughed field. After tillage, the respective ranges were 1.015-1.186 g/cm3, 0.990-1.151 g/cm3, and 0.995-1.066 g/cm3. In the stubble and soybean fields, an increase in the working speed of the machine either had no statistically significant effect on bulk density or increased it significantly. In the ploughed field, no statistically significant differences were observed. The change of the rotor's directional movement brought about significant changes only in the stubble field. Co-directional rotation of the rotor resulted in over pulverization of the soil at the depth of 5-10 cm.
AB  - Utvrđivanje promene zapreminske mase zemljišta pre i nakon obrade sa rotacionom sitnilicom, kao i u zavisnosti od smera obrtanja rotora izvedeno je u cilju određivanja optimalnog načina obrade zemljišta za korenasto povrće. Ispitivanje adaptirane rotacione sitnilice izvedeno je u poljskim uslovima na tri parcele. Uzorci zemljišta uzimani su saglasno standardu ISO 7256/1. Statistički značajne razlike između posmatranih varijanti određene su preko F-testa analize varijanse i Duncan-ovog testa na pragu značajnosti od 5%. Zapreminska masa pre obrade na dubini do 10 cm kretala se od 1,132-1,433 g/cm3 na strništu, od 1,286-1,442 g/cm3 na sojištu i 1,043-1,309 g/cm3 na oranom zemljištu. Zapreminska masa na obrađenom zemljištu na dubini do 10 cm 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. Povećanjem radne brzine na strništu i sojištu izmerene su statistički jednake ili statistički značajno više vrednosti zapreminske mase zemljišta. Na oranom zemljištu nisu izmerene statistički značajne razlike. Promenom smera obrtanja utvrđene su statistički značajne razlike jedino na sojištu, pri čemu je došlo do prekomernog usitnjavanja na dubini 5-10 cm pri istosmernom obrtanju rotora rotacione sitnilice.
PB  - Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad
T2  - Letopis naučnih radova Poljoprivrednog fakulteta
T1  - Tillage using a rotary tiller and its effect on soil volume weight
T1  - Uticaj obrade zemljišta rotacionom sitnilicom na promenu zapreminske mase zemljišta
EP  - 183
IS  - 1
SP  - 175
VL  - 33
UR  - https://hdl.handle.net/21.15107/rcub_fiver_686
ER  - 

@article{
author = "Ponjičan, Ondrej and Bajkin, Anđelko and Nešić, Ljiljana and Belić, Milivoj and Vasin, Jovica",
year = "2009",
abstract = "In order to establish the optimum tillage method for root vegetables, we studied how soil volume weight was affected by cultivation using a rotary tiller and how these effects depended on the direction of the rotor's revolution. An adapted tiller was studied in field conditions on three plots (a stubble field, a soybean field, and ploughed land). The samples were taken in accordance with the ISO 7256/1 standard. Statistically significant differences among the treatments were determined by the F test ANOVA and Duncan's test with a significance threshold of 5%. Prior to tillage, bulk density down to 10 cm depth was as follows: 1.132-1.433 g/cm3 for stubble field; 1.286-1.442 g/cm3 for soybean field; and 1.043-1.309 g/cm3 for ploughed field. After tillage, the respective ranges were 1.015-1.186 g/cm3, 0.990-1.151 g/cm3, and 0.995-1.066 g/cm3. In the stubble and soybean fields, an increase in the working speed of the machine either had no statistically significant effect on bulk density or increased it significantly. In the ploughed field, no statistically significant differences were observed. The change of the rotor's directional movement brought about significant changes only in the stubble field. Co-directional rotation of the rotor resulted in over pulverization of the soil at the depth of 5-10 cm., Utvrđivanje promene zapreminske mase zemljišta pre i nakon obrade sa rotacionom sitnilicom, kao i u zavisnosti od smera obrtanja rotora izvedeno je u cilju određivanja optimalnog načina obrade zemljišta za korenasto povrće. Ispitivanje adaptirane rotacione sitnilice izvedeno je u poljskim uslovima na tri parcele. Uzorci zemljišta uzimani su saglasno standardu ISO 7256/1. Statistički značajne razlike između posmatranih varijanti određene su preko F-testa analize varijanse i Duncan-ovog testa na pragu značajnosti od 5%. Zapreminska masa pre obrade na dubini do 10 cm kretala se od 1,132-1,433 g/cm3 na strništu, od 1,286-1,442 g/cm3 na sojištu i 1,043-1,309 g/cm3 na oranom zemljištu. Zapreminska masa na obrađenom zemljištu na dubini do 10 cm 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. Povećanjem radne brzine na strništu i sojištu izmerene su statistički jednake ili statistički značajno više vrednosti zapreminske mase zemljišta. Na oranom zemljištu nisu izmerene statistički značajne razlike. Promenom smera obrtanja utvrđene su statistički značajne razlike jedino na sojištu, pri čemu je došlo do prekomernog usitnjavanja na dubini 5-10 cm pri istosmernom obrtanju rotora rotacione sitnilice.",
publisher = "Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad",
journal = "Letopis naučnih radova Poljoprivrednog fakulteta",
title = "Tillage using a rotary tiller and its effect on soil volume weight, Uticaj obrade zemljišta rotacionom sitnilicom na promenu zapreminske mase zemljišta",
pages = "183-175",
number = "1",
volume = "33",
url = "https://hdl.handle.net/21.15107/rcub_fiver_686"
}

Ponjičan, O., Bajkin, A., Nešić, L., Belić, M.,& Vasin, J.. (2009). Tillage using a rotary tiller and its effect on soil volume weight. in Letopis naučnih radova Poljoprivrednog fakulteta
Univerzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad., 33(1), 175-183.
https://hdl.handle.net/21.15107/rcub_fiver_686

Ponjičan O, Bajkin A, Nešić L, Belić M, Vasin J. Tillage using a rotary tiller and its effect on soil volume weight. in Letopis naučnih radova Poljoprivrednog fakulteta. 2009;33(1):175-183.
https://hdl.handle.net/21.15107/rcub_fiver_686 .

Ponjičan, Ondrej, Bajkin, Anđelko, Nešić, Ljiljana, Belić, Milivoj, Vasin, Jovica, "Tillage using a rotary tiller and its effect on soil volume weight" in Letopis naučnih radova Poljoprivrednog fakulteta, 33, no. 1 (2009):175-183,
https://hdl.handle.net/21.15107/rcub_fiver_686 .

TY  - JOUR
AU  - Ponjičan, Ondrej
AU  - Bajkin, Anđelko
AU  - Vasin, Jovica
PY  - 2008
UR  - http://fiver.ifvcns.rs/handle/123456789/561
AB  - Machine for minibed forming was aggregated with tractor engine nominal power 139 kW. The working width was 305 cm (4 minibeds). Work quality was evaluated by physical property of soil, before and after minibeds forming, and depends of depth. Samples were taken by standard ISO 10381-6. The structural composition was measured at field conditions by sifting complet (method of Savinov). The structure coefficient at the depth of 10-25 cm were 0.36-0.07, and after minibeds forming 1.03-0.51. Soil moisture and volumetric bulk density were examined by the standard method, based on usage of Kopecky's physical rolles. The volumetric bulk density at the depth of 10-20 cm was 1.39 g.cm-3, and after mini beds forming 1.16 g.cm-3. The penetrometric resistance was measured by a penetrometet Finland Irvine Ltd. The penetrometric resistance of soil at the depth of 14-25 cm before minibeds forming were 5.31- 9.58 daN.cm-2, and at the minibeds 2.78-4.99 daN.cm-2. During the evolution physical property of soil statistical significant difference at 5% level was found in layer 10-25 cm.
AB  - Mašina za formiranje mini gredica bila je agregatirana sa traktorom snage 139 kW. Radni zahvat mašine iznosio je 305 cm (4 mini gredice). Kvalitet rada mašine ocenjen je merenjem fizičkih osobina zemlišta, pre i nakon formiranja mini gredica, kao i sa promenom dubine. Uzimanje uzoraka zemljišta izvedeno je po standardu ISO 10381-6. Strukturni sastav meren je u poljskim uslovima pomoću serije sita (metod Savinov-a). Koeficijent strukturnosti zemljišta na dubini 10-25 cm imao je vrednosti 0,36-0,07, a nakon prolaska mašine za formiranje mini gredica 1,03-0,51. Momentalna vlažnost zemljišta i specifična zapreminska masa određena je prema standardnom metodu korišćenjem cilindara po Kopeckom. Specifična zapreminska masa zemljišta na dubini 10-20 cm iznosila je 1,39 g.cm-3 a nakon formiranja mini gredica 1,16 g.cm-3. Pomoću elektronskog penetrometra izmerena je sabijenost zemljišta. Sabijenost zemljišta na dubini 14-25 cm pre formiranja mini gredica bila je 5,31-9,58 daN.cm-2, a na mini gredicama, 2,78-4,99 daN.cm-2. Prilikom ocene fizičkih osobina zemljišta statistički značajne razlike na pragu značajnosti od 5% pojavile su se u sloju 10-25 cm.
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  - Work quality of machine for the minibeds formation
T1  - Kvalitet rada mašine za formiranje mini gredica
EP  - 47
IS  - 2
SP  - 41
VL  - 13
UR  - https://hdl.handle.net/21.15107/rcub_fiver_561
ER  - 

@article{
author = "Ponjičan, Ondrej and Bajkin, Anđelko and Vasin, Jovica",
year = "2008",
abstract = "Machine for minibed forming was aggregated with tractor engine nominal power 139 kW. The working width was 305 cm (4 minibeds). Work quality was evaluated by physical property of soil, before and after minibeds forming, and depends of depth. Samples were taken by standard ISO 10381-6. The structural composition was measured at field conditions by sifting complet (method of Savinov). The structure coefficient at the depth of 10-25 cm were 0.36-0.07, and after minibeds forming 1.03-0.51. Soil moisture and volumetric bulk density were examined by the standard method, based on usage of Kopecky's physical rolles. The volumetric bulk density at the depth of 10-20 cm was 1.39 g.cm-3, and after mini beds forming 1.16 g.cm-3. The penetrometric resistance was measured by a penetrometet Finland Irvine Ltd. The penetrometric resistance of soil at the depth of 14-25 cm before minibeds forming were 5.31- 9.58 daN.cm-2, and at the minibeds 2.78-4.99 daN.cm-2. During the evolution physical property of soil statistical significant difference at 5% level was found in layer 10-25 cm., Mašina za formiranje mini gredica bila je agregatirana sa traktorom snage 139 kW. Radni zahvat mašine iznosio je 305 cm (4 mini gredice). Kvalitet rada mašine ocenjen je merenjem fizičkih osobina zemlišta, pre i nakon formiranja mini gredica, kao i sa promenom dubine. Uzimanje uzoraka zemljišta izvedeno je po standardu ISO 10381-6. Strukturni sastav meren je u poljskim uslovima pomoću serije sita (metod Savinov-a). Koeficijent strukturnosti zemljišta na dubini 10-25 cm imao je vrednosti 0,36-0,07, a nakon prolaska mašine za formiranje mini gredica 1,03-0,51. Momentalna vlažnost zemljišta i specifična zapreminska masa određena je prema standardnom metodu korišćenjem cilindara po Kopeckom. Specifična zapreminska masa zemljišta na dubini 10-20 cm iznosila je 1,39 g.cm-3 a nakon formiranja mini gredica 1,16 g.cm-3. Pomoću elektronskog penetrometra izmerena je sabijenost zemljišta. Sabijenost zemljišta na dubini 14-25 cm pre formiranja mini gredica bila je 5,31-9,58 daN.cm-2, a na mini gredicama, 2,78-4,99 daN.cm-2. Prilikom ocene fizičkih osobina zemljišta statistički značajne razlike na pragu značajnosti od 5% pojavile su se u sloju 10-25 cm.",
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 = "Work quality of machine for the minibeds formation, Kvalitet rada mašine za formiranje mini gredica",
pages = "47-41",
number = "2",
volume = "13",
url = "https://hdl.handle.net/21.15107/rcub_fiver_561"
}

Ponjičan, O., Bajkin, A.,& Vasin, J.. (2008). Work quality of machine for the minibeds formation. 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., 13(2), 41-47.
https://hdl.handle.net/21.15107/rcub_fiver_561

Ponjičan O, Bajkin A, Vasin J. Work quality of machine for the minibeds formation. in Traktori i pogonske mašine. 2008;13(2):41-47.
https://hdl.handle.net/21.15107/rcub_fiver_561 .

Ponjičan, Ondrej, Bajkin, Anđelko, Vasin, Jovica, "Work quality of machine for the minibeds formation" in Traktori i pogonske mašine, 13, no. 2 (2008):41-47,
https://hdl.handle.net/21.15107/rcub_fiver_561 .