Maize and Sunflower Production in Posavina, Croatia Influenced by Different Soil Tillage Systems
Proizvodnja kukuruza i suncokreta u Posavini različitim sustavima obrade tla
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Author
Kovacev, Igor
Kosutic, Silvio
Filipovic, Dubravko
Pospisil, Milan
Gospodaric, Zlatko
Keywords
fuel consumptionenergy and labour requirement
income/costs ratio
utrošak energije i radnog vremena
proizvodni troškovi
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The paper presents results of the two years experiment in maize and sunflower
production with four different soil tillage systems carried out in Western Slavonia, at
agricultural company ”PK Nova Gradiska” in village Staro Petrovo Selo, located 150 km
south-east from Zagreb (45° 10’ N, 17° 30’ E). Energy requirement comparison showed
that CT system had the highest fuel consumption of 62.93 L ha-1 (maize) and 57.96
L ha-1 (sunflower). In maize production the best energy saving system was RT2 with
36.30 L ha-1, while in sunflower production was RT1 with 36.41 L ha-1. Comparison
regarding labour requirement unveiled that conventional tillage (CT) required 2.62 h ha-1
and 0.35 h Mg-1 in maize, while in sunflower it required 2.63 h ha-1 and 0.35 h Mg-1. The
lowest labour requirement in maize production of 1.48 h ha-1 and 0.19 h Mg-1 achieved
RT2 followed by RT1 with 1.49 h ha-1 and 0.15 h Mg-1, while in sunflower the lowest
requirement achieved RT1 with 1.35 h ha-1 and 0.14 h Mg-1. The highest average yield
obtained system RT1 in both crops, while the lowest yield was with RT3 in maize and
CT in sunflower production. U radu su prikazani rezultati dvogodišnjih pokusa proizvodnje kukuruza i
suncokreta s četiri načina obrade tla provedenih u zapadnoj Slavoniji, na proizvodnim
površinama poljoprivredne tvrtke PK Nova Gradiška, lokacija Staro Petrovo Selo
(45° 10’ N, 17° 30’ E) smješteno 150 km jugoistočno od Zagreba. Usporedbom utroška
energije, najviša potrošnja goriva od 62.93 L ha-1 u proizvodnji kukuruza i 57.96 L ha-1
kod suncokreta, utvrđena je kod konvencionalnog sustava obrade tla (CT). Najveću
uštedu energije u proizvodnji kukuruza omogućio je sustav RT2 s 36.30 L ha-1, a kod
suncokreta sustav RT1 s 36.41 L ha-1. Usporedbom radnog vremena utvrđeno je da je CT
sustavom u proizvodnji kukuruza utrošeno 2.62 h ha-1 odnosno 0.35 h Mg-1, a kod
suncokreta 2.63 h ha-1 te 0.35 h Mg-1. Najniži utrošak radnog vremena u proizvodnji
kukuruza ostvario je sustav RT2 s 1.48 h ha-1 i 0.19 h Mg-1, potom RT1 s 1.49 h ha-1 i
0.15 h Mg-1, dok je u proizvodnji suncokreta najmanji utrošak radnog vremena ostvario
sustav RT1 s 1.35 h ha-1 i 0.14 h Mg-1. Najviši prosječni urod oba usjeva postignut je
sustavom RT1, a najniži urod kukuruza imao je sustav RT3, dok je najniži urod
suncokreta imao sustav CT.