NDSU Agriculture and Extension


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Scout for Tan Spot

Tan Spot

Tan spot has been found in several areas of the state. Tan spot is a fungal disease that infects winter and spring wheat in all counties of North Dakota. The greatest likelihood of a yield loss occurs when spring rains favor disease development with temperatures above 50 F, a susceptible or moderately susceptible variety is planted and the crop is planted into wheat residue. The early infections are small tan to brown spots surrounded by yellow halos. The NDSU small-grain disease forecasting system also has information for the risk of tan spot and other leaf spot infections.

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