This summer has been very cool with record cool temperatures in July. This cool and wet summer has led to widespread occurrences of sudden death syndrome (SDS) in soybean fields. The SDS reports this year are unlike other years. In 2006, the disease was reported by producers and agronomists to be widespread in eastern and central Iowa. This year, wide occurrences of the disease were observed by Mark Licht, ISU Extension field agronomist, in west central Iowa with incidence as high as 75 percent. Mark Wuebker, ISU Extension field agronomist, reported that "SDS is spreading by the day in Polk and Story counties. Fields that aren’t showing some are the exception."
Iowa State University
Yang, Xiao-Bing, "Sudden Death Syndrome in Soybean Widespread this Summer" (2009). Integrated Crop Management News. 565.
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