Crop Disease Reports from the UNL Diagnostic Clinic

Bacterial stalk rot and northern corn leaf blight in corn

Crop Disease Reports from the UNL Diagnostic Clinic

The following diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Lab from August 21 to September 11.

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

Soybean

East District –Bacterial blight, Bacterial pustule, Frogeye leaf spot, Cercospora leaf blight, Phyllosticta leaf spot, Brown spot, Sudden death of soybeans, Stem canker, Phytophthora root and stem rot, Charcoal rot

Southeast District – Frogeye leaf spot, Cercospora leaf spot, Brown spot, Bacterial pustule, Phytophthora root and stem rot, Sudden death of soybeans, Soybean Mosaic Virus

Northeast District – Frogeye leaf spot, Bacterial blight, Brown stem rot, Stem canker, White mold

North District – Frogeye leaf spot, Brown spot, Sudden death of soybeans, Brown stem rot, Stem canker, White mold

Central District – Soybean Mosaic Virus, Cercospora leaf blight, Bacterial blight, Sudden death of soybeans, Brown stem rot, Anthracnose

Sudden death syndrome on soybean leaves

Sudden death syndrome on soybean leaves

Bleached soybean stem

"Bleached" soybean stem due to white mold

White mold sclerotia in soybean

White mold sclerotia in soybean

Corn

East District – Common rust, Southern rust, Gray leaf spot, Northern corn leaf blight, Smut, Northern corn leaf spot, Goss’s Wilt, Bacteial leaf streak, Gibberella stalk rot

Southeast District – Common rust, Southern rust, Gray leaf spot, Bacterial leaf streak, Fusarium stalk and crown rot

Northeast District –Common rust, Southern rust, Gray leaf spot, Bacterial leaf streak, Bacterial stalk rot

North District – Common rust, Southern rust, Gray leaf spot, Holcus spot, Bacterial stalk rot

Central District – Anthracnose stalk rot, Fusarium stalk and crown rot

Sorghum

East District – Rust, Leaf blight, Sooty stripe, Gray leaf spot, Anthracnose, Target spot, Fusarium root rot

Alfalfa

East District – Summer black stem