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 September 5, 2020 through September 11, 2020.
|Apple (‘Honeycrisp’)||Zonal Leaf Chlorosis||None||Columbia|
|Apple (Unspecified)||Canker Disease|
Overly Deep Planting (Suspected)
Root Rot (Suspected)
Water Stress (Suspected)
|Unspecified canker pathogen |
Unspecified root rot fungi/water molds
Miscellaneous sooty blotch fungi
|Cranberry||Blotch Rot |
|Physalospora vaccinii |
|Grape||Downy Mildew |
|Plasmopara viticola |
|Raspberry||Root/Crown Rot (Suspected)||Unspecified root/crown rot fungus/water molds||Dodge|
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 email@example.com to subscribe to the PDDC listserv “UWPDDCLearn”.This article was posted in Apples, Berries, Cranberry, Disease, Grapes and tagged Apple Sooty Blotch, Apples, blotch rot, canker disease, chlorosis, Cranberries, cranberry, Downy mildew, Early Rot, flyspeck, frost crack, Grapes, gymnosporangium rust, Honeycrisp, overly deep planting, phomopsis canker, Raspberries, ripe rot, root rot, Root/Crown Rot, sap rot, water stress, zonal leaf chlorosis.