Abstract
So far, the implication of stubble tillage has not been studied intensively. Recommendations of early and shallow stubble tillage are based on experience and potentially observation by farmers. It seems to be correct that stubble tillage controls effectively perennial weeds. However, stubble tillage will not necessarily have the same effect on annual weeds and volunteer crops. Early stubble tillage can result in increased weed and volunteer problems. The data basis with respect to decomposition of straw as affected by stubble tillage is very scarce. Soil moisture apparently will not be conserved by early stubble tillage in every case. The current data basis tends to contradict this observation. Preliminary research showed that stubble tillage tends to increase yields. Further research to quantify the effects of stubble tillage is necessary.
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