I have received reputable reports from around the state that some field scouts and farmers are confusing soybean thrips with soybean aphids, and maybe some of these fields also are being sprayed. Soybean thrips almost never injure soybeans in Iowa and then probably only during dry weather. Correct identification of each insect is critical if the field is going to be sprayed with an insecticide because fields should not be sprayed for soybean thrips.
Iowa State University
Rice, Marlin E., "Don't confuse thrips with aphids" (2004). Integrated Crop Management News. 1571.
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