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 March 4, 2017 through March 10, 2017.

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

Fruit Crops
Apple, Nectria Twig Blight, Tubercularia vulgaris, Oneida
Apple, Thread Blight, Corticium stevensii, Vernon

Vegetable Crops
Potato, Edema, None, Dane
Rosemary, Powdery Mildew, Oidium sp., Dane
Spinach, Heterosporium Leaf Spot, Heterosporium sp., Bayfield

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

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