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.
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A permanent national E15 standard would boost corn demand, lower fuel costs, and provide a stable path for U.S. energy security.
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Farm Journal Foundation Senior Policy Adviser Dr. Stephanie Mercier outlines new research on the top sixteen biosecurity threats in agriculture/
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Corn and wheat exports continue to outperform last year, while soybeans show steady but subdued movement compared to 2024.
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Mold damage is tightening China’s corn supplies, supporting higher prices and creating potential demand for alternative feed grains in early 2026.
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While this month’s WASDE report will not include updated figures on U.S. crop size, officials say it will offer a clearer picture of crop conditions in the Southern Hemisphere.
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Southern producers head into 2026 with thin margins, tighter credit, and rising agronomic risks despite scattered yield improvements.
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