Crop Diseases Confirmed in Corn and Soybean July 16-26

Crop Diseases Confirmed in Corn and Soybean July 16-26 July 26, 2018

Next week while I am attending the American Phytopathological Society Annual Meeting and International Congress of Plant Pathology, the Plant and Pest Diagnostic Clinic will be operating at partial capacity until Monday, Aug 6.  Samples may still be submitted, but turnaround time will be delayed.  All samples submitted to the clinic during this time will be stored under refrigerated conditions to maintain quality until the samples can be read.

The following diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Lab from July 16 – July 26.

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

Soybean

East District – Anthracnose, brown stem rot, Phytophthora root and stem rot, stem canker, charcoal rot

Southeast District – Bacterial pustule, Phytophthora root and stem rot, stem canker, charcoal rot.

Central District – Phytophthora root and stem rot

Northeast District – Frogeye leaf spot, Phyllosticta leaf spot

Corn

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

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

South District – Bacterial leaf streak, common rust, southern rust, gray leaf spot

Resources

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.