UW-Extension/Madison Plant Disease Diagnostic Clinic (PDDC) Update

Brian Hudelson, Ann Joy, Erin DeWinter and Joyce Wu, Plant Disease Diagnostics Clinic

The PDDC receives samples of many plant and soil samples from around the state. The following diseases/disorders have been identified at the PDDC from May 10, 2014 through May 16, 2014.

Plant/Sample Type, Disease/Disorder, Pathogen, County


Basil, Root Rot, Pythium sp., Columbia

Horseradish, Virus Disease, Unidentified virus (suspected turnip mosaic virus), McHenry (IL)

Pepper, Gray Mold, Botrytis cinerea, Adams

Pepper, Impatiens Necrotic Spot, Impatiens necrotic spot virus, Adams

Tomato, Herbicide Injury, None, Winona (MN)


Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Columbia, Dane

For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.