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Thursday, May 5, 2016

Black cutworm alert

Bruce Potter, Integrated pest management specialist

Several significant black cutworm flights have arrived in Minnesota, with most activity on a diagonal from Rock to Sibley Counties. Neighboring states have also reported large black cutworm flights. Larvae from the March 28 and April 12 flights should be large enough to produce visible leaf feeding and in the case of March 28 flight, be large enough to cut small corn by May 16.

Areas of southern Minnesota are at risk for stand loss from black cutworm larvae. See the UMN Black Cutworm Reporting Network for the latest newsletters with predictions and articles on black cutworm biology and scouting advice.

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