engleski

Climatic conditions, soil tillage and Nitrogen fertilization of winter wheat in Eastern Croatia

On the brown soil of Eastern Croatia the effects of the soil tillage systems have been investigated (A(1) - conventional tillage 25-30 cm, A(2) - subsoling 35-40 cm, A(3) - discharowing 10-15 cm, A(4) - no tillage). The study was carried out on different winter wheat (Triticum aestivum L.) cultivars (B(1) - Soissons, B(2) Fiesta, B(3) - Gabi) as well as the nitrogen fertilization (C(1) - 130, C(2) - 160, C(3) - 190 N ha kg(-1)) in the dry 2002/2003 and the humid 2003/2004 climate conditions. The experiment was set up according to the split-split-plot method. Grain yield was very low in the dry climate condition and in the humid year the yield was high. Soil tillage has not affected the yield in any of these years, while in the humid year there were differences between the cultivars. The Gabi cultivar had the highest yield (70, 0 dt ha(-1)) in the humid conditions and the lowest (45, 3 dt ha(-1)) in the dry year. Increasing the quantity of the nitrogen resulted with the increase in yield in both years. There is no interaction between the tillage and the cultivars, nor any other interaction.

tillage ; Nitrogen ; soil quality ; fertilization ; wheat ; climate change

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