Insect Alert For

Corn Earworm

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Alert Details

A strong cold front will continue to push southeast through the upper Midwest and Plains states today into tonight. To the southeast of the front, southwest winds originating in the southern Plains and western mid-south regions may pose an isolated corn earworm migration threat for portions of Kansas, southeast Nebraska, Iowa, southern Wisconsin, Missouri, Illinois, Michigan, Indiana, Ohio, and southwest Ontario, Canada. The source region is not the most optimal for a large scale flight and crop stages are advancing past critical growth stages in many areas now so a higher risk is not warranted. High pressure builds into the upper Midwest and Great Lakes region for a few days, but Low risks return to the forecast already by Friday night into Saturday across the Plains and then across much of the corn-growing region by Saturday night into Sunday especially from the Plains east into the southwest Great Lakes region. Southerly winds are expected to increase to the east of another quick-moving cold front and may pose another risk of isolated corn earworm moth flights by that time. Fresh market and processing growers especially in the upper Midwest should continue to monitor their crops for signs of corn earworms and take appropriate action, if needed and desired, over the course of the next week.