Late Blight Update – July 24th 2025
Late blight strain ID testing has confirmed the strain found on potatoes was US-23. This is the same strain that… Continue Reading Late Blight Update – July 24th 2025
Information for commercial vegetable production in Ontario
Late blight strain ID testing has confirmed the strain found on potatoes was US-23. This is the same strain that… Continue Reading Late Blight Update – July 24th 2025
Late blight has been confirmed on potatoes in Dufferin County. The identified area was small but risk of late blight… Continue Reading Late Blight Update – July 17th, 2025
Late blight has been found in a tomato field in Kent County. Samples are being analyzed for strain identification.
Late blight has been detected on a few potato plants in one field in Elgin county.
J. Chaput, OMAFRA, Minor Use Coordinator, Guelph The Pest Management Regulatory Agency (PMRA) recently announced the approval of minor use… Continue Reading XenTari WG Biological Insecticide label expanded via Minor Use Program for control of Tomato Leafminer on fruiting vegetables
Late blight has been confirmed on potatoes near Alliston. Late blight has also been recently identified in Michigan, Wisconsin and… Continue Reading Late Blight Confirmed on Potato in Simcoe County
The Pest Management Regulatory Agency recently announced that it will be cancelling the use of the group M3 chemicals… Continue Reading Late Blight Control in Tomatoes: The Loss of Mancozeb
Cheryl Trueman (Ridgetown Campus, University of Guelph) & Janice LeBoeuf (OMAFRA) It seems like recently there have been a rash… Continue Reading Making Lemonade Out of Lemons – A Tomato Fungicide Stewardship Tip Amidst Changing Regulations
Darren Robinson, University of Guelph, Ridgetown Campus; Janice LeBoeuf, OMAFRA, Ridgetown Introduction Herbicides are useful tools for the management of… Continue Reading Herbicide injury symptoms in tomatoes
Janice LeBoeuf, OMAFRA Vegetable Crop Specialist, Ridgetown Healthy and hardy transplants are a critical part of a successful season. When… Continue Reading Holding Vegetable Plug Transplants




