Insect Alert For

Corn Earworm

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Alert Details

Corn earworm migration risks are predicted to increase by the end of the week and into the weekend as a strong cold front pushes southeast through the corn-growing region. As this cold front and its parent low pressure center develops across the far western Plains tonight into tomorrow morning, southerly winds will increase across the Plains and Low migration risks for the potential of mainly isolated moth flights exists from northern Kansas into Nebraska and South Dakota. South to southwest winds are expected to increase and spread east as the front moves east by tomorrow into Friday. As a result, Moderate risks are in the forecast from Nebraska and Iowa northeast into far southeast South Dakota, southern and central Minnesota, and also into far western Wisconsin. Moderate risks continue in the forecast across far northeast Missouri, eastern Iowa, southern and eastern Wisconsin, northern and central Illinois, northern Indiana, and southwest lower Michigan Friday night into Saturday, and finally across Indiana, Ohio, lower Michigan, southern Ontario, western Pennsylvania, and western New York state by Saturday night into Sunday morning as the front moves east. Growers with crops at susceptible stages, especially fresh-market and processing companies, are encouraged to monitor traps and scout fields not only for recent flights but anticipated flights later this week and over the weekend.