Late Blight Confirmed on Tomato and Potato from St. Croix Co. WI
Sporulating lesions on tomato and potato samples were confirmed positive for late blight this morning from St. Croix County. We should know of the strain/genotype yet today.
Growers in western and north-central Wisconsin should be on alert that late blight spores may be in the area risking health of tomato and potato crops. More information will come later today.
Wisconsin commercial conventional fungicides for potato late blight control can be found at:
Wisconsin commercial conventional fungicides for tomato late blight control can be found at:
Frequently asked questions and organic control of late blight info:
Managing Late Blight in the Organic Tomato Crop
Managing Late Blight in Organic Tomato & Potato Crops Amanda J. Gevens Extension Plant Pathologist, University of Wisconsin, Madison, WI 53706
Associate Professor & Extension Specialist
Potato & Vegetable Pathology
Plant Pathology Department
University of Wisconsin-Madison
Madison, WI 53706