Tar spot has already been discovered in corn crops in Nebraska.
Fourteen counties have reported detecting the disease so far this year. Agronomists say that its presence at this point in the growing season is not surprising.
It has also been found in neighboring states, including Iowa, Kansas, Missouri, and Indiana.
Nebraska Extension advises farmers to intensify scouting efforts in fields with a history of disease or those in higher risk, like pivot irrigation fields.
Fungicide use is not recommended at this time because research shows application for tar spot management is most effective between R2 and R3 growth stages.
Large rain events, like those recently in Nebraska, can create ideal conditions for tar spot and other diseases to take place, so scouting is essential.
Strong production and rising stocks may pressure ethanol margins unless demand or exports continue to improve.
January 26, 2026 10:00 AM
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Congressman Adrian Smith of Nebraska joined us with the latest on efforts to secure year-round E15 sales.
January 23, 2026 01:12 PM
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Decoupled base acres may amplify income inequality and distort planting decisions as farm program payments increase.
January 22, 2026 12:56 PM
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From tariff talks in Europe to SCOTUS uncertainty and rising farm losses, analysts say policy and global supply will shape grain markets in the year ahead.
January 22, 2026 12:40 PM
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Large Brazilian crops heighten downside price risk if the weather allows production to reach projected levels.
January 22, 2026 12:38 PM
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Ethanol and corn groups are not hiding their disappointment over new reports that the bill to allow year-round E15 sales failed as Congress forges ahead on government funding, with another shutdown looming.
January 22, 2026 11:24 AM
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