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 June 27, 2015 through July 3, 2015.
Plant/Sample Type, Disease/Disorder, Pathogen, County
Field Crops
Soybean, Bacterial Blight, Pseudomonas syringae pv. glycinea, Grant
Forage Crops
Alfalfa, Common Leaf Spot, Pseudopeziza medicaginis, Marathon
Alfalfa, Root Rot, Phytophthora sp., Pythium sp, Marathon
Alfalfa, Spring Black Stem, Phoma medicaginis, Marathon
Alfalfa, Stemphylium Leaf Spot, Stemphylium sp., Marathon
Fruit Crops
Apple, Cedar-Apple Rust, Gymnosporangium juniper-virginianae, Iowa
Blueberry, Gloeosporium Leaf Spot, Gloeosporium sp., Dakota (MN)
Cherry, Bacterial Canker, Pseudomonas syringae, Iowa, Walworth
Cherry, Brown Rot, Monilinia fructicola, Walworth
Cherry, Root/Crown Rot, Phytophthora sp., Fusarium sp., Door
Grape, Downy Mildew, Plasmopara viticola, Vemon
Vegetables
Cucumber, Angular Leaf Spot, Pseudomonas syringae pv. lachrymans, Jefferson
Garlic, Unidentified Viral Disease, Unidentified virus, Rock
Green Bean, Bacterial Brown Spot, Pseudomonas syringae pv. syringae, Jefferson
Spinach, Fusarium Wilt, Fusarium oxysporum, Milwaukee
Spinach, Root Rot, Pythium sp., Milwaukee
Squash, Angular Leaf Spot, Pseudomonas syringae pv. lachrymans, Dane
Tomato, Early Blight, Alternaria solani, Milwaukee
Tomato, Septoria Leaf Spot, Septoria lycopersici, Sauk
Watermelon, Angular Leaf Spot, Pseudomonas syringae pv. lachrymans, Jefferson
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu