Insect Alert For

Corn Earworm

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Alert Details

Low corn earworm migration risks are in the forecast for the next three nights as a favorable weather pattern may result in isolated moth flights into portions of the corn-growing region. Low pressure will continue to organize and deepen across the western Plains states as a cold front emerges to its south. South to southwest winds to the west of high pressure across the southeastern United States may allow isolated moth flights to occur especially across Kansas into western Missouri overnight tonight into Saturday morning. As the low pressure system continues to become stronger and moves northeast, the associated corn earworm migration risks shifts north and east as well by tomorrow night into Sunday morning. Fields from Kansas into eastern Nebraska, Iowa, Missouri, and Illinois will be at risk of seeing some early-season corn earworm moth flights. The risk then shifts into the southern Great Lakes and eastern corn-growing region by Sunday night into Monday morning as a cold front pushes east through the Midwest. Growers are advised that even though crops are not at a susceptible stage to damage at this point in the growing season, these early-season moth flights can have an impact on late-season moth populations so new migrants should be monitored and made note of in the next week.