Mark Carlton, extension specialist in crops, and Tracy Cameron, agronomist at Crestland Co-op in Creston, report loopers defoliating soybean in Lucas and Union counties, respectively, in southern Iowa. Both fields had been planted no-till into pasture. The field in Union County also had variegated cutworms that were chewing plants to the ground in the areas of thicker dead grass.
Iowa State University
Rice, Marlin E., "Loopers defoliate beans in southern Iowa" (2001). Integrated Crop Management News. 1981.
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