Brian Hudelson, Sean Toporek, Ann Joy and Joyce Wu
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 August 8, 2015 through August 14, 2015.
Plant/Sample Type, Disease/Disorder, Pathogen, County
Field Crops
Corn, Anthracnose Stalk Rot, Colletotrichum graminicola, Grant
Corn, Eyespot, Kabatiella zeae, Dane
Corn, Northern Corn Leaf Blight, Exserohilum turcicum, Dane
Soybean, Downy Mildew, Peronospora manshurica, Sauk
Soybean, Root Rot, Fusarium sp., Waupaca, Waukesha
Soybean, Sclerotinia Stem Rot, Sclerotinia sclerotiorum, Columbia
Soybean, Sudden Death Syndrome, Fusarium virguliforme, Dodge
Soybean, Target Spot, Corynespora cassiicola, Waukesha
Fruit Crops
Apple, Black Rot, Sphaeropsis sp., Green
Apple, Fire Blight, Erwinia amylovora, Green
Apple, Root/Crown Rot, Phytophthora sp., Pythium sp., Sawyer
Apricot, Scab, Cladosporium sp., Waukesha
Blueberry, Gloeosporium Leaf Spot, Gloeosporium sp., Eau Claire
Blueberry, Root/Crown Rot, Phytophthora sp., Pythium sp., Eau Claire
Cherry, Cherry Leaf Spot, Phloeosporella padi, Rock
Cherry, Root/Crown Rot, Phytophthora sp., Sawyer
Pear, Root/Crown Rot, Phytophthora sp., Sawyer
Plum, Root/Crown Rot, Phytophthora sp., Sawyer
Raspberry, Cane Blight, Coniothyrium fuckellii, Richland
Raspberry, Root/Crown Rot, Rhizoctonia sp., Pythium sp., Fusarium sp., Ozaukee, Richland
Vegetables
Basil, Downy Mildew, Peronospora belbahrii, Dane
Broccoli, Crown Gall, Agrobacterium tumefaciens, Kenosha
Cucumber, Anthracnose, Colletotrichum orbiculare, Dane
Cucumber, Powdery Mildew, Oidium sp., Dane
Garlic, Fusarium Stem Rot, Fusarium oxysporum, Walworth
Onion, Fusarium Basal Rot, Fusarium oxysporum, Marquette
Potato, Late Blight, Phytophthora infestans, Polk
Potato, Powdery Mildew, Oidium sp., Dane
Tomato, Late Blight, Phytophthora infestans, Polk, St. Croix
Tomato, Septoria Leaf Spot, Septoria lycopersici, Rock, Kenosha
Tomato, Tobacco Mosaic, Tobacco Mosaic virus, Walworth
Specialty Crops
Hop, Carlavirus, Unidentified carlavirus, Dane
Hop, Downy Mildew, Pseudoperonospora humili, Dane
Soil
Alfalfa Soil, Aphanomyces Seedling Blight, Aphanomyces euteiches race 2, Houston (MN)
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu