Wisconsin Potato and Vegetable Growers Association

Disease Supplement – UWEX Vegetable Crop Updates Newsletter

June 29th, 2015 | Posted in: Crop Updates, News

Website Crop Update Feature ImageThe late blight that was detected in Adams County WI is of the US-23 genotype/strain. This means that phenylamide fungicides such as metalaxyl and mefenoxam (ie: Ridomil) are effective in managing late blight. Other traits of US-23 include, A1 mating type, host range includes tomatoes, produces many relatively smaller sporangia (spores). This was the predominant type in the US last year.

Amanda Gevens
Potato & Vegetable Pathologist
University of Wisconsin

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