Brian Hudelson, Ann Joy, Erin DeWinter and Joyce Wu, Plant Disease Diagnostics Clinic
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 July 13, 2013 through July 19, 2013.
Plant/Sample Type, Disease/Disorder, Pathogen, County
FIELD CROPS,
Corn, Mosaic, Unidentified Virus, Sauk
Corn, Northern Corn Leaf Spot, Bipolaris zeicola, Dane
Corn, Root Rot, Rhizoctonis solani, Pythium sp., Sauk
Corn, Yellow Leaf Blight, Phyllosticta maydis, Dane
Soybean, Fusarium Root Rot, Fusarium spp., Dubuque (IA)
Soybean, Herbicide Damage, None, Marinette
Soybean, Charcoal Rot, Macrophomina phaseolina, Dubuque (IA)
FORAGE CROPS,
Alfalfa, Aphanomyces Root Rot, Aphanomyces euteiches, Vernon, Winnebago
Alfalfa, Crown Rot, Fusarium spp., Phoma medicaginis, Green Lake, Vernon, Winnebago
Alfalfa, Phytophthora Root Rot, Phytophthora megasperma f. sp. Medicaginis, Green Lake, Winnebago
Alfalfa, Pythium Root Rot, Pythium sp., Green Lake
Alfalfa Rhizoctonia Root Rot, Rhizoctonia solani, Vernon, Winnebago
FRUIT CROPS,
Apple, Frogeye Leaf Spot, Botryosphaeria obtusa, Lafayette
Blueberry, Anthracnose, Gloeosporium sp., Waukesha
Grape, Anthracnose, Sphaceloma ampelinum, Dane, Jefferson
Grape, Downy Mildew, Plasmopara viticola, Jefferson
Grape, Poor Pollination, None, None
Grape, Rupestris Speckle, None, Dane
Pear, Anthracnose, Gloeosporium sp., Waukesha
Strawberry, Root Rot, Pythium sp., Fusarium sp., Marathon
VEGETABLES,
Cabbage, Black Rot, Xanthomonas campestris pv. campestris, Outagamie
Garlic, Twister/Anthracnose, Colletotrichum gloeosporioides, Washburn
Horseradish, Fusarium Root Rot, Fusarium spp., Dunn
Pepper, Bacterial Spot, Xanthomonas campestris pv. vesicatoria, Columbia
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.