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

Brian Hudelson, Sean Toporek, Jake Kurczewski and Ann Joy

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 August 27, 2016 through September 2, 2016.

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

Fruit Crops
Blueberry, Phomopsis Canker, Phomopsis sp., Chippewa
Cranberry, Bitter Rot, Colletotrichum acutatum, Colletotrichum gloeosporioides, Juneau, Wood
Cranberry, Early Rot, Phyllostica vaccinii, Wood
Grape, Anthracnose, Sphaceloma ampelinum, Buffalo
Grape, Downy Mildew, Plasmopara viticola, Buffalo
Grape, Septoria Leaf spot, Septoria sp., Buffalo

Vegetable Crops
Basil, Downy Mildew, Peronospora belbahrii, Rock
Cucumber, Anthracnose, Colletotrichum orbiculare, Portage
Kale, Yellows, Fusarium sp., Winnebago
Pepper, Bacterial Spot, Xanthomonas sp., Dane
Snap Bean, Root Rot, Pythium sp., Fusarium sp., Portage
Snap Bean, Unidentified Viral Disease, Unidentified virus, Milwaukee
Potato, Black Leg, Dickya sp., Waushara
Potato, Early Blight, Alternaria solani, Sawyer
Potato, Verticillium Wilt, Verticillium sp., Door
Tomato, Antracnose, Colletotricum sp., Portage
Tomato, Bacterial Speck, Pseudomonas syringae pv. tomato, Dane
Tomato, Bacterial spot, Xanthomonas sp., Dane, Racine
Tomato, Cucumber Mosaic, Cucumber mosaic virus, Milwaukee
Tomato, Early Blight, Alternaria solani, Milwaukee
Tomato, Septoria Leaf Spot, Septoria lycopersici, Dane, Portage

Specialty Crops
Hop, Carlavirus, Unidentified carlavirus, Dane

Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Boone (IL)

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