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

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 December 5, 2015 through December 11, 2015.

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

Field Crops
Corn, Anthracnose Stalk Rot, Colletotrichum graminicola, Columbia
Corn, Aspergillus Seed Rot, Aspergillus flavus, Wood
Corn, Gibberella Stalk Rot, Fusarium graminearum, Columbia

Corn, Cucumber Mosaic, Cucumber mosaic virus, Outagamie
Corn, Gray Mold/Botrytis Blight, Botrytis cinerea, Outagamie
Corn, Tobacco Mosaic, Tobacco mosaic virus, Outagamie
Corn, Tomato Spotted Wilt, Tomato spotted wilt virus, Outagamie

Alfalfa Soil, Aphanomyces Seedling Blight, Aphanomyces euteiches race 2, Davis (IA)

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

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