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How Tough Are Beneficials?

When farmers spray pesticides, what happens to beneficial organisms–those insects and diseases that help suppress noxious insects, diseases, or weeds? Not much information is available to guide farmers, and the EPA doesn’t require it for pesticide registrations. IPM researchers recently tested 65 commercial pesticides for mortality against five commonly available beneficial insects. The results could be indexed for use in evaluating the overall environmental impact of pesticides.