Insect Alert For

Corn Earworm

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

A rather stagnant weather pattern is in place across the corn-growing region with a front bisecting the area from southwest to northeast. Southeast of the front, a very rich, moisture-laden air mass is bringing some periodic rounds of heavy rainfall near and east of the front along with south to southwest winds while behind it, largely dry and less humid conditions are present. With southerly source region winds coming out of known areas where corn earworms are present in the mid-south and southern delta regions, at least some isolated corn earworm flight possibilities are possible in the southeastern half of the corn-growing region from the mid-Mississippi River valley northeast into the southern Great Lakes into the weekend. Primary concern tonight into tomorrow is from extreme southeast Kansas northeast through Missouri, far southeast Iowa, Illinois and points east with the risk tomorrow night mainly east of I-55 in Illinois. This risk is especially targeted to vegetable and fresh market growers as virtually all field corn is not at a susceptible stage to any damage as of yet except in the far lower Ohio River valley, southeast Missouri, and into southeast Kansas and southwest Missouri. Little to no additional migration risk is predicted after the weekend, but vegetable growers in the southeastern half or so of the corn-growing region should continue checking traps and scouting fields even into next week given the favorable pattern for potential migration.