Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
Full page
Alert Details

Corn earworm migration risks remain in the forecast especially across Kansas and Nebraska for the next 2-3 nights before spreading north and east once again by the weekend and into early next week. Northwest flow should keep any migration risks very limited to none further north and east until that time. As the next low pressure system and cold front begin developing in the Plains and upper Midwest by this weekend, additional south to southwest winds should result in the risk area spreading east into the Mississippi River valley by Saturday night into Sunday, and then across a large portion of the corn-growing region from the central Plains northeast into the Great Lakes region by Sunday night into Monday. While the overall risk to field corn is low to none at this point, fresh market vegetables and recently tasseled sweet corn will stand a risk of seeing some damage especially if they are the only crops attractive to corn earworms. An increased migration risk will be considered for early next week once the timing/location of the front becomes a little clearer.