Insect Alert For

Corn Earworm

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Alert Details

A cold front followed by an unseasonably strong high pressure system is predicted to push into the corn-growing region next week. Before this front passes, though, a period of south to southwesterly winds may pose an isolated corn earworm flight risk mainly across the central and southern corn-growing region between tonight and moving into Sunday morning. Risks should be confined to fields mainly west of Lake Michigan and I-55 tonight into tomorrow morning but then should expand east into the lower Great Lakes and eastern Midwest by tomorrow night into Sunday morning. Many field, fresh market, and processing crops are either now in or will be in critical growth stages in the next few weeks and growers should monitor their traps and fields closely and take appropriate action where it is needed. Earlier flights this spring are now resulting in some larvae appearing in fields, so despite the lack of larger scale flights in the last week or so, new larvae are developing and posing a threat to crops at this time.