Insect Alert For

Corn Earworm

Risk Level:
No Risk
Affected Area:
No risk Full page
Alert Details

Corn earworm migration risks will be on the increase once we reach the holiday weekend and into next week as the weather pattern shifts from north to northwest flow dominant to a south to southwest flow as low pressure develops across the High Plains and high pressure moves into the eastern corn-growing region and eventually into the eastern United States. The resultant southerly flow that develops in between the two pressure systems may result in isolated or even scattered corn earworm moth flights as early as Friday night across the Plains and into portions of the corn-growing region mainly along and west of I-35. Moderate migration risks are predicted across northern Iowa, Minnesota, and western Wisconsin Saturday night into Sunday morning, and across northeast and eastern Iowa, central and northern Illinois, Wisconsin, far southwest lower Michigan, and northwest Indiana by Sunday night into Monday morning. Growers with crops still at susceptible stages to damage, especially processors and fresh market growers in the northern corn-growing region, should continue to monitor traps and prepare for another potential corn earworm moth flight over the holiday weekend and into early next week.