Scout for aphids to protect soybean yields | West Central Tribune
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The soybean aphid (Aphis glycines Matsamura) is a native pest of soybean in eastern Asia. The aphid is relatively small (less than 1/16-inch long when mature) and pale yellow. It's the only aphid that forms colonies on soybean in the U.S. Identifying features on the wingless forms in soybean include its black cornicles -- tubular structures on the rear of the abdomen, and a pale cauda -- the structure protruding from the rear of the aphid. (University of Minnesota Extension photo)

Scout for aphids to protect soybean yields

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ST. PAUL -- Soybean aphids have become the most damaging insect pests in soybeans; untreated populations can cause 40 percent or more yield loss. There's a very reliable treatment threshold, developed from a multi-state project spearheaded by the University of Minnesota.

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