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 December 10, 2016 through December 16, 2016.

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

Vegetable Crops
Cucumber, Powdery Mildew, Sphaerotheca fuliginea, Waukesha
Potato, Black Dot, Colletotrichum coccodes, Portage
Potato, Fusarium Dry Rot, Fusarium sambucinum, Dane
Potato, Leak, Pythium sp., Dane
Tomato, Powdery Mildew, Oidium sp., Dane

Soil
Alfalfa Soil, Aphanomyces Seedling Blight, Aphanomyces euteiches race 2, Waukesha
Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Brown, Dane, Iowa

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

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