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Corn Earworm Forecast
September 14, 2026

Low corn earworm migration risks are predicted tonight into tomorrow for areas mainly along/east of the I-35 corridor.

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Corn Earworm Forecast
September 11, 2026

Moderate corn earworm migration risks are predicted tonight into tomorrow across portions of Iowa, Minnesota, Illinois, Wisconsin, Indiana, and lower …

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Corn Earworm Forecast
September 10, 2026

Low corn earworm migration risks are predicted tonight into tomorrow mainly west of the Mississippi River but also including western Wisconsin.

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Corn Earworm Forecast
September 9, 2026

Low corn earworm migration risks are predicted mainly along/west of the Mississippi River tomorrow night into Friday.

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Corn Earworm Forecast
September 8, 2026

Moderate corn earworm migration risks are predicted tonight into tomorrow across portions of Missouri, Iowa, Wisconsin, Illinois, Indiana, Ohio, and l…

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Corn Earworm Forecast
September 4, 2026

Low corn earworm migration risks focus mainly west of the Mississippi River through Sunday.

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Corn Earworm Forecast
September 3, 2026

Moderate corn earworm migration risks are predicted across Iowa, southeast Minnesota, northern Missouri, central and northern Illinois, and Wisconsin …

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Corn Earworm Forecast
September 2, 2026

Low corn earworm migration risks are predicted tonight into tomorrow across a pretty broad area from the Plains states all the way east to I-75.

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Corn Earworm Forecast
September 1, 2026

Moderate corn earworm migration risks are predicted tonight into tomorrow across portions of Missouri, Illinois, Indiana, Ohio, and Michigan with Low …

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Corn Earworm Forecast
August 31, 2026

Moderate corn earworm migration risks are predicted tonight into tomorrow across portions of Missouri, Iowa, Wisconsin, Illinois, Indiana, Ohio, and l…

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Corn Earworm Forecast
August 28, 2026

Low corn earworm migration risks are predicted tonight into tomorrow mainly west of Lake Michigan.

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Corn Earworm Forecast
August 27, 2026

Low corn earworm migration risks are predicted generally west of Lake Michigan tomorrow night into Saturday.

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Forecasts are limited to the country’s main crop production regions east of the Rocky Mountains and west of the Appalachian Mountains and parts of Canada. Insect forecasts are based on data analyzed from moth traps located throughout the United States’ main crop production regions as well as predicted weather patterns and field reports and research. Forecasts are estimates based on available information and cannot guarantee actual insect pressure risks. Recommendations for insect pressure risk forecasts are based upon generally accepted practices. Forecasts and recommendations should not be used as a substitute for sound farming practices, including diligent field monitoring, or as a sole means for making risk management decisions.

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