Brian Hudelson, Ann Joy, Joyce Wu, Tom Hinsenkamp, and Catherine Wendt, 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 August 23, 2014 through August 29, 2014.
Plant/Sample Type, Disease/Disorder, Pathogen, County
FIELD CROPS,
Corn, Common Rust, Puccinia sorghi, Jo Davies (IL)
Corn, Root Rot, Pythium sp., Dane
Corn, Southern Corn Leaf Blight, Bipolaris maydis,Jo Davies (IL)
Soybean, Brown Spot, Septoria glycines, Iowa
Soybean, Downy Mildew, Peronospora manshurica, Dane
Soybean, Phyllosticta Leaf Spot, Phyllosticta sp., Dane
Soybean, Phytophthora Root and Stem Rot, Phytophthora sp. , Lafayette
Soybean, Pod and Stem Blight, Phomopsis sp., Dane
FRUIT CROPS,
Apple, Sphaeropsis Canker, Sphaeropsis sp., Lincoln
Blackberry, Septoria Leaf Spot, Septoria rubi, Vernon
Cranberry, Bitter Rot, Colletotrichum acutatum, Colletotrichum gloeosporioides, Jackson
Cranberry, Blotch Rot, Physalospora vaccinii, Jackson
Cranberry, Early Rot, Phyllosticta vacinii, Wood
Cranberry, Tobacco Streak, Tobacco streak virus, Wood
Grape, Downy Mildew, Plasmopara viticola, Milwaukee
Grape, Rupestris Speckle, None, Dane
Pear, Sphaeropsis Canker, Sphaeropsis sp., Racine
VEGETABLES,
Pepper, Tomato Spotted Wilt, Tomato spotted wilt virus, Columbia
Squash (Acorn), Root Rot, Pythium, Monroe
Sweet Corn, Northern Corn Leaf Blight, Exserohilum turcicum, Columbia
Potato, Cercospora Leaf Blotch, Cercospora sp., Columbia
Potato, Early Blight, Alternaria solanit, Columbia
Potato, Late Blight, Phytophthora infestans, Portage
Tomato, Early Blight, Alternaria solanit, Columbia
Tomato, Late Blight, Phytophthora infestans, Marinette, Waukesha
Tomato, Septoria Leaf Spot, Septoria lycopersici, Columbia, Dane
Tomato, Sour Rot, Geotrichum sp., Dane
SOIL,
Alfalfa Soil, Aphanomyces Seedling Blight, Aphanomyces euteiches race 2, Buffalo, Marathon, Scott (MN)
For additional information on plant diseases and their control, visit the PDDC website at pddc.wisc.edu.