Western bean cutworms are damaging corn again in northwestern Iowa for the second consecutive year. This insect traditionally has not been a problem in Iowa, but significant yield loss did occur in some fields during 2000 and early indications are that more economic damage is expected in 2001. On August 7, Tony Weis (Vohs Seeds, Holstein, IA) reported some corn hybrids that have nearly five larvae per plant. More typically there was less than one up to just over two per plant. Infestations were the worst on later silking hybrids.
Iowa State University
Rice, Marlin E., "Western bean cutworm strikes corn" (2001). Integrated Crop Management News. 2005.
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