The Department of Plant Pathology at ISU has received numerous reports of damping-off across Iowa. Both preemergence damping-off and postemergence damping-off have been found. The largest area having stand establishment problems is about 90 acres. We have identified Phytophthora or Pythium in some samples of diseased plants sent to the ISU Plant Disease Clinic.
Iowa State University
Yang, X. B. and Uphoff, Michael D., "Soybean damping-off prevalent" (1998). Integrated Crop Management News. 2272.
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