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Corn Earworm Forecast
September 18, 2026

Low corn earworm migration risks are predicted tonight into tomorrow from eastern Kansas and Nebraska as far east as southwest lower Michigan, Indiana…

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Corn Earworm Forecast
September 17, 2026

Low corn earworm migration risks are predicted tomorrow night into Saturday from the eastern Plains as far east as roughly the I-69 corridor in southe…

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Corn Earworm Forecast
September 16, 2026

Low corn earworm migration risks are predicted tonight into tomorrow mainly along/south of I-80 west of Lake Michigan, and then as far north as I-94 o…

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Corn Earworm Forecast
September 15, 2026

Low corn earworm migration risks are predicted tomorrow night into Thursday mainly along/south of I-80 but also further north into southern lower Mich…

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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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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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