Soybean rust was found in a field in Dallas County, Iowa, on Tuesday, September 25, 2007. The soybean rust infection initially was identified via visual observation. On Wednesday, three Iowa State University plant pathologists visited the field and collected additional leaves, and we observed newly formed soybean rust pustules and spores on those leaves to confirm the infection.
Iowa State University
Mueller, Daren S., "Soybean rust found in an Iowa field" (2007). Integrated Crop Management News. 979.
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