Insect Alert For

Corn Earworm

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

Moderate corn earworm migration risks are predicted across eastern and northeast Illinois, Indiana, western Ohio, and southern lower Michigan tonight into Tuesday morning as a cold front pushes east through the Midwest. South to southwest winds originating in a favorable source region for corn earworm are expected to persist to the east of the front especially across the southern Great Lakes and eastern Midwest this evening into the overnight hours. Scattered moth flights will be possible into especially the Moderate risk area but Low risks extend west to near the Mississippi River and east to western Pennsylvania. Growers are advised that while many crops are not at susceptible stages to damage as of yet, moth flights now may result in greater second generation populations later this summer where they do occur so trap monitoring is still important at this point in the growing season. A break in the rather persistent south to southwest flow regime is expected to only last a few days this week as southerly winds return by the middle to late portion of the week with Low migration risks already back in the forecast across the Plains by Wednesday night and Thursday and across much of the corn-growing region west of Lake Michigan and the Illinois/Indiana state line by the end of the week and into next weekend.