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.
Corn and wheat exports remain a demand bright spot, while soybeans are transitioning into a more typical late-winter shipping slowdown.
January 21, 2026 10:36 AM
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Corn growers are turning to ethanol, E15 expansion, and export markets to help absorb record supplies and stabilize prices. Farm leaders discuss low-carbon ethanol demand, flex-fuel vehicle challenges, input costs, and the role of USMCA as producers look for market relief in the year ahead.
January 20, 2026 02:04 PM
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National Corn Growers Association Chief Economist Krista Swanson discusses corn supply pressures, market fundamentals, policy considerations, and producer outlook for the year ahead.
January 16, 2026 01:13 PM
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Iowa Secretary of Agriculture Mike Naig discusses market conditions, policy priorities, and his outlook for agriculture moving forward.
January 15, 2026 01:36 PM
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Record ethanol production and improving blending demand continue to support corn usage despite rising short-term inventories.
January 15, 2026 11:47 AM
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Agronomy experts explain why standing crop residue protects soil and reduces costs for crop growers, while shredding often yields little benefit at higher costs.
January 14, 2026 08:00 AM
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