Brian Hudelson, Sean Toporek, Ann Joy and Joyce Wu
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 August 1, 2015 through August 7, 2015.
Plant/Sample Type, Disease/Disorder, Pathogen, County
Field Crops
Corn, Anthracnose Stalk Rot, Colletotrichum graminicola, Iowa
Corn, Common Rust, Puccinia sorghi, Iowa
Corn, Eyespot, Kabatiella zeae, Iowa
Corn, Goss’ Wilt, Clavibacter michiganensis subsp. nebraskensis, Grant
Corn, Gray Leaf Spot, Cercospora sp., Iowa
Corn, Northern Corn Leaf Blight, Exserohilum turcicum, Grant
Corn, Northern Corn Leaf Spot, Bipolaris zeicola, Iowa
Soybean, Downy Mildew, Peronospora manshurica, Sauk, Walworth
Fruit Crops
Grape, Root/Crown Rot, Pythium sp., Rhizoctonia sp., Marquette
Vegetables
Squash, Blossom End Rot, None, Dane
Tomato, Bacterial Speck, Pseudomonas syringae pv. tomato, Dane
Tomato, Septoria Leaf Spot, Septoria lcopersici, Burnett, Dane, Dunn, Jackson
Tomato, Zippering, None, Dunn
Soil
Soybean, Soybean Cyst Nematode, Heterodera glycines, Dane
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu