UW-Madison/Extension Plant Disease Diagnostic Clinic (PDDC) Update July 15, 2022
In 2022, the PDDC continues to provide diagnoses through examination of digital photographs, as well as physical samples. Click here for the PDDC’s current submission policy, as well as information on the PDDC’s current fee structure. Digital diagnoses will be included in the Wisconsin Disease Almanac and when a digital diagnosis would normally require a lab confirmation, the disease/disorder will be labeled as “suspected”. The following diseases/disorders have been identified at the PDDC from July 8, 2022 through July 15, 2022.
PLANT/SAMPLE TYPE | DISEASE/DISORDER | PATHOGEN | COUNTY |
FRUIT CROPS | |||
Apple | Cedar-Apple Rust Frogeye Leaf Spot (Suspected) | Gymnosporangium juniperi-virginianae Botryosphaeria obtusa | Dane Dane |
Blueberry | Cold Injury (Suspected) Root Rot | None Phytophthora sp., Pythium sp. | Oconto Oconto |
Grape | Downy Mildew Eutypa Dieback | Plasmopara viticola Eutypa sp. | Dane Trempealeau |
Strawberry | Angular Leaf Spot Common Leaf Spot Root/Crown Rot | Xanthomonas fragariae Mycosphaerella fragariae Phytophthora sp., Rhizoctonia sp., Fusarium sp., Cylindrocarpon sp. | Waupaca Dunn, Waupaca, La Salle (IL) Waupaca |
To learn more about plant diseases and their control, as well as PDDC educational resources and activities, visit the PDDC website at pddc.wisc.edu, follow the clinic on Facebook and Twitter @UWPDDC or email pddc@wisc.edu to subscribe to the PDDC listserv “UWPDDCLearn”.
This article was posted in Disease and tagged angular leaf spot, Ann Joy, Apples, Blueberries, Brian Hudelson, cedar-apple rust, cold injury, common leaf spot, disease, Downy mildew, eutypa dieback, frogeye leaf spot, Grapes, PDDC, Plant Disease Diagnostic Clinic, root rot, Root/Crown Rot, Sarah deVeer, Strawberries, Sue Lueloff.