Insect Alert For

Corn Earworm

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

A rather prolonged period of south to southwest winds is expected across much of the corn-growing region for the rest of this week, this weekend, and into early next week until a cold front eventually passes through the area by next Tuesday or Wednesday. As a result, corn earworm migration risks are in the forecast on a nightly basis until that time, and a Moderate risk is likely to be issued in tomorrow’s forecast for early next week. Low risks focus mainly west of the Mississippi River tonight, and then expand east to near Lake Michigan and into eastern Illinois tomorrow night into Saturday. By the weekend and early next week, fields from the Plains to as far east as near the I-75 corridor in Michigan, western Ohio, and Kentucky are at risk, with the migration risk generally staying along/south of the US 12 corridor in the northern corn-growing region. Growers with crops still at sensitive stages to corn earworm damage, especially fresh market and processing growers, need to continue regular trapping and scouting efforts until harvest.