Brian Hudelson, Sean Toporek, Catherine Wendt, Claire Wisniewski, 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 September 26, 2015 through October 2, 2015.
Plant/Sample Type, Disease/Disorder, Pathogen, County
Field Crops
Corn, Anthracnose, Colletotrichum graminicola, Buffalo
Corn, Gray Leaf Spot, Cercospora sp., Buffalo
Corn, Northern Corn Leaf Blight, Exserohilum turcicum, Buffalo
Soybean, Charcoal Rot, Macrophomina phaseolina, McHenry (IL)
Soybean, Sudden Death Syndrome, Fusarium virguliforme, McHenry (IL)
Fruit Crops
Apple, Flyspeck/ Sooty Blotch, Flysepck/Sooty blotch fungal complex, Dane
Apple, Frogeye Leaf Spot, Botryosphaeria obtusa, Dane
Apple, Fruit Russet, None, Dane
Apple, Phoma Leaf Spot, Phoma sp., Dane
Apple, Phomopsis Leaf Spot, Phomopsis sp., Dane
Raspberry, Root/Crown Rot, Phytophthora sp., Dane
Specialty Crops
Mint, Root Rot, Rhizoctonia sp., Fusarium sp., Rock
Vegetables
Basil, Root Rot, Fusarium sp., Sauk
Corn (Sweet), Maize White Spot Disease, Pantoea ananatis, Waushara
Cucumber, Downy Mildew, Pseudoperonospora cubensis, Dane
Kale, Alternaria Leaf Spot, Alternaria sp., Fillmore (MN)
Kale, Black Rot, Xanthomonas sp., Fillmore (MN)
Potato, Pink Eye, Pseudomonas fluorescens, Oneida
Squash, Powdery Mildew, Oidium sp., Rock
Squash, Downy Mildew, Pseudoperonospora cubensis, Rock
Tomato, Late Blight, Phytophthora infestans, Washington, Waukesha
Tomato, Septoria Leaf Spot, Septoria lycopersici, Marathon
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu