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 August 29, 2015 through September 4, 2015.
Plant/Sample Type, Disease/Disorder, Pathogen, County
Field Crop
Corn, Anthracnose Stalk Rot, Colletotrichum graminicola, Outagamie
Corn, Fusarium Root Rot, Fusarium sp., Outagamie
Corn, Gray Leaf Spot, Cercospora sp., Sheboygan
Corn, Pythium Root Rot, Pythium sp., Outagamie
Soybean, Fusarium Root Rot, Fusarium sp., Calumet, Outagamie
Soybean, Pythium Root Rot, Pythium sp., Calumet
Soybean, Stem Canker, Phomopsis sp., Calumet, Dane, Dodge, Outagamie, Sheboygan
Soybean, Sudden Death Syndrome, Fusarium virguliforme, Columbia
Forage Crops
Alfalfa, Spring Black Stem, Phoma medicaginis, Pepin
Alfalfa, Stemphylium Leaf Spot, Stemphylium sp., Pepin
Alfalfa, Summer Black Spot, Cercospora sp., Pepin
Forage Grasses (Miscellaneous), Anthracnose, Colletotrichum sp., Dane
Forage Grasses (Miscellaneous), Rust, Puccinia sp., Dane
Forage Grasses (Miscellaneous), Stagnospora Leaf Blotch, Stagnospora sp., Dane
Fruit Crops
Apple, Apple Scab, Venturia inaequalis, Dane, Oneida
Apple, Black Rot, Sphaeripsis sp., Dane
Cherry, Bacterial Canker, Pseudomonas syringae, Adams
Grape, Downy Mildew, Plasmopara viticola, Dane
Pear, Pear Scab, Venturia pirina, Oneida
Raspberry, Raspberry Leaf Spot, Cylindrosporium rubi, St. Croix
Strawberry, Common Leaf Spot, Mycosphaerella fragariae, Dane
Strawberry, Phomopsis Leaf Blight, Phomopsis obscurans, Dane
Strawberry, Root/Crown Rot, Phytophthora sp., Pythium sp., Rhizoctonia sp., Vilas
Vegetables
Basil, Downy Mildew, Peronospora belbahrii, Milwaukee
Carrot, Cercospora Leaf Blight, Cercospora sp., Dane
Cucumber, Altemaria Leaf Blight, Alternaria cucumerina, Portage
Cucumber, Angular Leaf Blight, Pseudomonas syringae pv. lachrymans, Portage
Cucumber, Helminthosporium Leaf Spot, Helminthosporium sp., Portage
Garlic, Clove Rot, Fusarium sp., Barron
Garlic, Embellisia Skin Blotch, Embellisia allii, Waukesha
Melon, Powdery Mildew, Oidium sp., Dane
Melon, Downy Mildew, Pseudoperonospora cubensis, Dane
Pepper, Bacterial Spot, Xanthomonas sp., La Crosse
Pepper, Syringae Leaf Spot, Pseudomonas syringae pv., La Crosse
Tomato, Black Mold, Alternaria alternata, Vernon
Tomato, Late Blight, Phytophtora infestans, Brown, Dodge, Portage, Wood
Tomato, Septoria Leaf Spot, Septoria lycopersici, Portage, Racine, Vernon, Washburn
Tomato, Sunscald, None, Portage
Soil
Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Grant, Jefferson, Marquette, Monroe, Richland, Rock
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu