Red Crown Rot to Spread Across U.S. Soybeans in 2027

The aggressive soybean disease is expected to impact more acreage across several states in 2027.

Updated on Oct. 16, 2026 in Botany

Bold flat-color editorial illustration of a stylized, geometric soybean plant, representing the spread of agricultural disease in the United States. — Red crown rot is projected to impact additional soybean acreage across the United States in 2027 as farmers seek resistant crop varieties. AI Illustration. Upload story photo >

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Do you believe agricultural diseases pose an increasing long-term threat to our national food supply?

Red crown rot, an aggressive disease known to reduce soybean yields, is set to expand its reach across U.S. farmland in 2027. The pathogen has already been confirmed in nine states including Illinois, Iowa, and Missouri.

Why it matters

The continued spread of this disease threatens agricultural productivity as farmers face increasing challenges in protecting their soybean crops from infection. Management strategies are becoming essential to mitigate the potential economic losses caused by reduced yields.

The fungus affects plants across a broad geographic range covering Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Ohio, and Wisconsin. Scientists are currently utilizing specific seed treatments and breeding programs to counter the rot.

The details

Seed companies are actively working to breed plants with higher resistance to the rot, as currently available varieties remain highly susceptible. Farmers are encouraged to manage the disease through methods such as adjusting planting dates and selecting resistant seeds.

Red crown rot expansion is expected throughout 2027.

The Big Picture

The expansion of red crown rot follows a pattern of emerging agricultural threats identified by the National Soybean Checkoff research programs. This trajectory forces a fundamental shift in how producers select and manage their crop varieties annually.

The continued spread of red crown rot could lead to significant changes in agricultural outputs and crop pricing for domestic products. Consumers and businesses relying on soy-based ingredients may eventually face volatility in availability or costs as yields are impacted.

The takeaway

Farmers should prioritize the early selection of resistant seed varieties to safeguard their upcoming harvests against the pathogen. Monitoring regional updates on disease spread remains a critical step for maintaining crop health and productivity.