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

Brian Hudelson, Sean Toporek and Joyce Wu

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 March 28, 2015 through April 3, 2015.

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


Pear, Sphaeropsis Canker, Sphaeropsis sp., Waupaca


Potatoes, Common Scab, Streptomyces scabies, Oneida

Spinach, Fusarium Wilt, Fusarium oxysporum, Dane

Spinach, Root Rot, Pythium sp., Dane

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