engleski

Effects of conventional and alternating tillage systems in winter wheat – soybean crop rotation

Research was conducted under field conditions at Knezevo site chalcic chernozem soil type for eight soil tillage systems (K1: conventional tillage, with ploughing up to the 30 cm as a primary tillage ; K2: diskharrowing up to the 15 cm ; K3: chiselling up to the 30 cm + diskharrowing ; K4: diskharrowing, in alternation with ploughing for preceding crop ; K5: ploughing, in alternation with diskharrowing only for preceding crop ; K6: No- till, in alternation with ploughing for preceding crop ; K7: ploughing, in alternation with No-till for preceding crop ; and K8: No- till) in winter wheat (Triticum aestivum L.) - soybean (Glycine max L.) crop rotation during four growing seasons (2001/02-2004/05). All measured soil and crop properties were strongly affected by different seasons, especially with the season of 2003 with extreme drought. Winter wheat growth and grain yield achieved by reduced tillage systems was either at the same level with K1, or even higher (K2 and K3 in 2001/02), with exception in 2002/03, when K7 and K8 were lower than K1 due to the drought. Soybean growth and yield was consistently the most impaired at K7 and K8 system. Conclusion is that within the Croatian Baranja environmental conditions is possible to replace soil tillage based on the ploughing for winter wheat and soybean with reduced soil tillage systems based on disking and chiselling, whereas no-till system still needs solution which will address drought-related problems.

winter wheat ; soybean ; ploughing ; diskharrowing ; chiselling ; no-till

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