Integrated Crop Management News

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Black cutworms continue to cause stand loss to young corn across the state. Many problems have been associated with weedy fields or no-till fields but economic damage also has occurred in clean, conventionally tilled fields. On rare occasions, the cutworms are damaging corn that is too large to be completely cut by the insects. Tracy Cameron, agronomist at Crestland Co-op, and I examined a field in Union County last week where late-stage larvae were drilling into the side of six-leaf corn or climbing plants and cutting the leaves out of the whorl.

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Iowa State University



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