Management methods of harmful pests in the cotton-wheat crop rotation system

This article analyzed the ecological succession between pests of crops as a result transition from traditional cotton-alfalfa crop rotation system to cotton-grain system. It was found that species composition, development and propagation characteristics harmful organisms in weeds around field, well intermediate crops, can be reduced by up 60-70%, protected entomophagous destructive effects pesticides through lateral tillage 30-meter edge cotton crop. Furthermore, it possible apply biological methods remaining 70-80% field. necessary properly organize “Cotton-grain” towards naturally controlling (reduce or eliminate) number (pests, diseases weeds) agrophytocenosis . observed (especially rust), wild oats, raygras), (weeds, wheat thrips, slime,) were 2-3 times less grain planted after cotton, spiders field 3-4 less, decreased 25-30%.