Natural control of mites will occur as humidity increases and temperatures are moderate. To check for mites, shake a soybean leaves over a sheet of white paper and look for tiny, cream to red coloured spiders. Leafhoppers rarely warrant control in soybeans, Threshold in edible beans prior to podding is 1 leafhopper on every second trifoliate. Hot, dry weather will favour numbers increasing. Edible beans can sustain higher populations under good growing conditions.
Leafhoppers look like tiny, green wedge-shaped insects that appear on the underside of leaves.
Potato leafhoppers can be very damaging to alfalfa, reducing growth, lower protein levels and reduce vigour in alfalfa. Symptoms appear as a wedge-shaped yellow area in the leaf tip. As damage increases, yellowing spreads over the entire leaf, giving fields a yellowish coloration and growth appears stunted. New seedlings can be severely weakened by leafhoppers. The most effective products for control are Cygon and Lagon.