engleski

EFFECT OF SOIL TILLAGE SYSTEMS IN WINTER WHEAT PRODUCTION ON GLEYIC PODZOLUVISOL IN CROATIA

The paper presents results of one year experiment in winter wheat production with three different soil tillage systems carried out in Slavonia, at fields of agricultural enterprise Hana Našice d.o.o, location Lila. Test crop was winter wheat, variety Renan. Tillage systems were: conventional, conservation and no-till. Energy requirement comparison showed extraordinary expensiveness of conventional tillage with specific consumption of 46.6 L ha-1 and 8.19 L Mg-1 of diesel fuel. Conservation tillage I system required 29.8 L ha-1 and 4.92 L Mg-1, which is 36.1 % less energy per hectare and 40.0 % less energy per ton. Conservation tillage II required 18.9 L ha-1 and 2.85 L Mg-1, which is 59.4 % less energy per hectare and 65.2 % less energy per ton. The most energy saving soil tillage system is no-till with fuel consumption of only 6.2 L ha-1 0.92 L Mg-1 of diesel fuel or 86.7 % less energy per hectare and 88.8 % less energy per ton than conventional system. Soil tillage systems comparison regarding labour requirement unveiled that conventional tillage required 1.95 h ha-1 and 0.34 h Mg-1, while conservation tillage I required 1.29 h ha-1 and 0.21 h Mg- 1 or 33.8 % and 37.9 % less labour requirement than conventional tillage system respectively. Conservation tillage II required 0.74 h ha-1 and 0.11 h Mg-1 or 62.3 % and 67.6 % less labour requirement. No-till required only 0.32 h ha-1 and 0.05 h Mg-1 which is 83.8 % and 86.3 % less than conventional tillage system. The lowest yield of 5.69 t ha-1 achieved conventional tillage, while the highest yield of 6.73 t ha-1 achieved no-till.

Soil tillage; energy requirement; winter wheat; Slavonia

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