Southern rust was reported in several fields in Butler and Grundy counties late last week. Leaf samples were received by the ISU Plant Disease and Insect Clinic, and confirmations were made. Because common rust is widespread in cornfields in Iowa, it is important for farmers and agronomists to correctly distinguish between these two rusts, especially if a fungicide decision is to be made.
Iowa State University
Robertson, Alison E. and Saalau Rojas, Erika, "Southern Rust Found in Central Iowa" (2012). Integrated Crop Management News. 229.
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