Brian Hudelson, Ann Joy, Joyce Wu, Tom Hinsenkamp, and Catherine Wendt,
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 26, 2014 through August 1, 2014.
Plant/Sample Type, Disease/Disorder, Pathogen, County
FIELD CROPS,
Corn, Anthracnose, Colletotrichum graminicola, Grant, Rock
Corn, Fusarium Root Rot, Fusarium sp., Rock
Corn, Yellow Leaf Blight, Phyllosticta maydis, Rock
Soybean, Alfalfa Mosaic, Alfalfa mosaic virus, Columbia, Grant
Soybean, Pythium Root Rot, Pythium sp., Grant
Soybean, Soybean Cyst Nematode, Heterodera glycines, Marathon
FORAGE CROPS,
Alfalfa, Aphanomyces Root Rot, Aphanomyces euteiches, Wood
Alfalfa, Phytophthora Root Rot, Phytophthora sp., Wood
Alfalfa, Root/Crown Rot, Fusarium oxysporum, Pythium sp., Wood
FRUIT CROPS,
Peach, Root/Crown Rot, Phytophthora sp., Pythium sp., Racine
Raspberry, Raspberry Leaf Spot, Cylindrosporium rubi, Winnebago
Raspberry, Root/Crown Rot, Pythium sp., Rhizoctonia solani, Fusarium sp., Cylindrocarpon sp., Winnebago
NEEDLED WOODY ORNAMENTALS,
Fir (Balsam), Root/Crown Rot, Phytophthora sp., Chippewa
VEGETABLES,
Celery, Aster Yellows, Aster yellows phytoplasma, Richland
Celery, Blackheart, None, Richland
Collards, Black Rot, Xanthomonas campestris, Crawford
Horseradish, Root Rot, Rhizoctonia solani, Eau Claire
Horseradish, Verticillium Wilt, Verticillium sp., Eau Claire
Kale, Black Rot, Xanthomonas campestris, Crawford
Pepper, Bacterial Spot, Xanthomonas campestris, Walworth
Potato, Edema, None, Crawford
Pumpkin, Powdery Mildew, Oidium sp., Dane
Snap Bean, Ashy Stem Blight, Macrophomina phaseolina, Waushara
Snap Bean, Fusarium Root Rot, Fusarium spp., Waushara
Snap Bean, Fusarium Yellows, Fusarium oxysporum, Waushara
Snap Bean, Pythium Root Rot, Pythium spp, Waushara
Snap Bean, Rhizoctonia Root Rot, Rhizoctonia solani, Waushara
Tomato, Bacterial Canker, Clavibacter michiganensis subsp. Michiganensis, Dane
Tomato, Bacterial Spot, Xanthomonas sp., Dane
Tomato, Septoria Leaf Spot, Septoria lycopersici, Dane, Waukesha
Tomato, Walnut Toxicity, None, Dane, Waukesha
SOIL,
Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Columbia, Jefferson, Outagamie
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.