The PDDC is now once again accepting physical samples for diagnosis, but due to COVID-19, only with limited hours and limited sample processing capacity. Click here for the current submission policy. The PDDC is continuing to provide diagnoses through examination of digital photographs. Digital diagnoses have not traditionally been included in the Wisconsin Disease Almanac, because such diagnoses are not verified through lab testing (critical in most situations for a diagnosis to be accurate). However, in an attempt to keep clients as informed as possible, digital diagnoses will be included in the Almanac until normal PDDC operations resume. For Almanac entries below, 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 4, 2020 through July 10, 2020.
|Apple||Apple Scab (Suspected) |
Honeycrisp Leaf Mottle
Powdery Mildew (Suspected)
|Venturia inaequalis |
|Apricot||Bacterial Canker (Suspected)||Pseudomonas syringae||Green|
|Cherry||Cherry Leaf Spot (Suspected)|
Fertility Issues (Suspected)
|La Crosse, Ozaukee, Sheboygan |
|Grape||Anthracnose (Suspected)||Sphaceloma ampelinum||Winnebago|
|Peach||Bacterial Canker (Suspected)||Pseudomonas syringae||Green|
|Raspberry||Gray Mold/Botrytis Blight (Suspected) |
Transplant Shock (Suspected)
Water Stress (Suspected)
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 firstname.lastname@example.org to subscribe to the PDDC listserv “UWPDDCLearn”.This article was posted in Apples, Berries, Disease, Grapes, WFN and tagged Anthracnose, Apple Scab, Apples, apricot, bacterial canker, botrytis blight, Cherry, Cherry Leaf Spot, disease, fertility issues, Grapes, gray mold, gymnosporangium rust, honeycrisp lead mottle, PDDC, Peach, Plant Disease Diagnostic Clinic, Powdery mildew, transplant shock, water stress.