Insect Alert For

Corn Earworm

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

Corn earworm migration risks are rather abundant over the next four nights as a pattern more typical of July envelops much of the corn-growing region. South to southwest flow is expected to dominate the weather into the next weekend, and this will result in the potential for prolonged periods of southerly flow across a good portion of the corn-growing region until a cold front pushes through late in the weekend and early next week. Growers with crops still at susceptible stages to damage from corn earworms, including but not limited to processors and fresh market growers, should continue to monitor traps and scout fields until the crop is harvested or no longer a threat based on growth stage. Low risks are predicted tonight into tomorrow from the Plains east as far as southwest lower Michigan and Indiana. Low risks continue tomorrow night into Friday morning mainly west of the Mississippi River, and then Low risks cover much of the corn-growing region over the weekend prior to the cold front passage. A Moderate risk has also been introduced to the forecast across northern Iowa, Minnesota, and Wisconsin in the Friday night into Saturday time period especially given a larger number of acres in this area that are for processing crops and are more likely at susceptible stages to damage at this time.