Small colonies of soybean aphids were found in eastern Iowa on June 8. Natural enemies of soybean aphids, such as lady beetles (especially the multicolored Asian lady beetle), green lacewings, insidious flower bugs and other beneficial insects occur in Iowa soybean fields and will eat aphids. These predators probably will be most helpful in June and early July when fields are most likely to have small aphid populations.
Iowa State University
Rice, Marlin E., "Soybean aphids, natural enemies and the economic threshold" (2004). Integrated Crop Management News. 1582.
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