PP&DC Disease Reports

In soybean: brown stem rot and Phytophthora root and stem rot; in corn: bacterial stalk rot and Physoderma brown spot
Figure 1. (From left) In soybean: brown stem rot, Phytophthora root and stem rot; in corn: bacterial stalk rot and Physoderma brown spot. (Photos by Kyle Broderick)

PP&DC Disease Reports

The following diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Lab from July 21 to August 8.

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

Soybean

Southeast District – Frogeye leaf spot, Phytophthora root and stem rot, sudden death syndrome

Northeast District – Brown stem rot, stem canker, frogeye leaf spot

Corn

East District – Common rust, Southern rust, Gray leaf spot, northern corn leaf blight, smut, northern corn leaf spot, Diplodia leaf streak, Goss’s wilt, bacterial leaf streak

Southeast District – Common rust, gray leaf spot, Physoderma brown spot, bacterial leaf streak

Northeast District – Common rust, gray leaf spot, northern corn leaf blight, anthracnose leaf blight, Physoderma brown spot, bacterial leaf streak, bacterial stalk rot

South District – Common rust, Southern rust, gray leaf spot, Physoderma brown spot

Central District – Common rust, Southern rust, gray leaf spot, northern corn leaf blight, smut, Physoderma brown spot, fusarium stalk rot, Goss’s wilt, bacterial leaf streak, Holcus spot

Resources

Find more information and photos about each of these diseases in the Crop Disease Management section of CropWatch for Wheat, Soybean, and Corn. If you'd like to submit a sample to the clinic for diagnosis, check this CW story, Quality Samples Lead to Better Diagnosis, for tips on packaging and sending samples.

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.