Diseases Confirmed in Corn and Soybean July 26-Aug. 15

Diseases Confirmed in Corn and Soybean July 26-Aug. 15

The following diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Lab from July 26 to August 15.

Map of Nebraska crop reporting districts
Figure 1. Reporting districts (View larger)


East District – Anthracnose, Phytophthora root and stem rot, stem canker, charcoal rot, sudden death syndrome, frogeye leaf spot, downy mildew, bacterial pustule

Southeast District – Frogeye leaf spot, charcoal rot, stem canker

Central District – Phytophthora root and stem rot

Northeast District – Frogeye leaf spot, charcoal rot, stem canker, Bacterial blight


East District – Common rust, southern rust, gray leaf spot, eyespot, gray leaf spot (GLS), Physoderma brown spot, holcus spot, northern corn leaf blight, northern corn leaf spot, southern corn leaf blight, Goss’s wilt

Northeast District – Gray leaf spot, southern rust

Southeast District – Bacterial leaf streak, southern rust, Goss’s wilt, bacterial stalk rot

Central District – Bacterial leaf streak, common rust, gray leaf spot


Find more information and photos about these diseases in the Crop Disease Management section of CropWatch for Soybean and Corn.

Visit the Plant and Pest Diagnostic Clinic page in CropWatch for

  • information on how to submit crop and pest samples,
  • a sample submission form, and
  • a fee schedule for diagnostic services.

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