UW-Madison/Extension Plant Disease Diagnostic Clinic (PDDC) Update March 10, 2023
In 2023, 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 March 4, 2022 through March 10, 2023.
| PLANT/SAMPLE TYPE | DISEASE/DISORDER | PATHOGEN | COUNTY |
| FRUIT CROPS | |||
| Apple | Burr Knot | None | Dane |
| Fruit Tree (Unspecified) | Sooty Mold | Unidentified sooty mold fungus | Columbia |
| Plum | Black Knot | Apiosporina morbosa | Dane |
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 Apples, black knot, Brian Hudelson, burr knot, disease, PDDC, Plant Disease Diagnostic Clinic, Plum, Sarah deVeer, Sooty mold.