Since the third week of July, a few diseases (white mold, sudden death syndrome, and downy mildew) started to show up in Iowa soybean fields. These diseases normally aren't seen until early August. This season's cool weather has promoted their unusually early occurrence.
Iowa State University
Yang, X. B., "Diseases show up earlier in 2004" (2004). Integrated Crop Management News. 1527.
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