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

Brian Hudelson, Ann Joy, Joyce Wu, Tom Hinsenkamp, and Catherine Wendt,
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 June 28, 2014 through July 4, 2014.

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


Corn, Anthracnose, Colletotrichum graminicola, Lafayette

Corn, Eyespot, Kabatiella zeae, Lafayette

Soybean, Target Spot, Corynespora cassiicola, Marathon


Apple, Winter Injury, None, Eau Claire, Jackson

Strawberry, Root Rot, Pythium sp., Brown

Strawberry, Winter Injury, None, Brown


Pepper, Bacterial Spot, Xanthomonas campestris pv. vesicatoria, Dane

Tomato, Bacterial Spot, Xanthomonas sp., Dane

Tomato, Septoria Leaf Spot, None, Portage


Hop, Root/Crown Rot, Rhizoctonia sp., Fusarium sp., Dane

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