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Leaf diseases in long term field trials with reduced tillage and herbicide and fungicide treatment in spring barley, spring wheat and oats were studied during the years 1994-1997. Diseases were observed in only half of the fields/years in this period. It is concluded that fungicide treatment was very effective against the different diseases, while the effect of tillage treatment was more variable...
In five long-term field trials with various tillage treatments and plant protection measures winter annual+biennial and perennial weed species increased when tillage was reduced compared to conventional seed-bed preparation by ploughing and harrowing. In some fields monocot species developed most, while in other fields dicots dominated. Both stubble treatment with glyphosate and post-emergence weed...
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