Brian Hudelson, Ann Joy, Erin DeWinter and Joyce Wu, Plant Disease Diagnostics Clinic
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 July 27, 2013 through August 2, 2013.
Plant/Sample Type, Disease/Disorder, Pathogen, County
FORAGE CROPS,
Alfalfa, Aphanomyces Root Rot, Aphanomyces euteiches, Dane
Alfalfa, Crown Rot, Fusarium spp., Dane, Grant
Alfalfa, Pythium Root Rot, Pythium sp., Dane, Grant
Alfalfa, Rhizoctonia Root Rot, Rhizoctonia solani, Dane
FRUIT CROPS,
Apple, Root/Crown Rot, Pythium sp., Fusarium sp., Clark
Blueberry, Chlorosis, None, Langlade
Blueberry, Fruit Rot, Colletotrichum gloeosporioides, Langlade
Blueberry, Gray Mold/Botrytis Blight, Botrytis cinerea, Langlade
Blueberry, Phomopsis Canker, Phomopsis sp., Langlade
Blueberry, Sphaeropsis Canker, Sphaeropsis sp., Langlade
Blueberry, Water Stress, None, Langlade
Pear, Anthracnose, Gloeosporium sp., Racine
Pear, Chemical Toxicity, None, Racine
Raspberry, Root/Crown Rot, Phytophthora sp., Pythium sp., Rhizoctonia sp., Fusarium sp., Jefferson, La Crosse, McHenry (IL)
VEGETABLES,
Potato , Late Blight, Phytophthora infestans, Dunn
Pumpkin, Bacterial Leaf Spot, Xanthomonas campestris pv. cucurbitae, Grant
Tomato, Bacterial Speck, Pseudomonas syringae pv. Tomato, Grant
Tomato, Herbicide Damage, None, Brown
Tomato, Septoria Leaf Spot, Septoria lycopersici, Grant, Sauk
SOIL,
Soybean Soil, Soybean Cyst Nematode, Heterodera glycines, Oconto
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.