NewsIndustryOntario Late Blight Spore Trap Results and Wisconsin Strain Identified

Ontario Late Blight Spore Trap Results and Wisconsin Strain Identified

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Spores of late blight were detected in Ontario in Dufferin, Simcoe and Norfolk counties.  The filters were in the spore traps from July 18 to 22.  Late blight has not been reported in Ontario, but it was found in a potato field in Wisconsin and identified as US 23, a strain that is very aggressive on tomatoes and potato tubers.  US 23 is susceptible to Ridomil (metalaxyl-M).

New potatoes of the variety Superior arrived from Leamington at Ontario Potato Distributing (OPDI) in Alliston yesterday.  The tubers look healthy, even-sized and solid.  They should be on consumers’ tables soon.

New potatoes of the variety Superior arrived from Leamington, Ont. Photo: Eugenia Banks

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