Information for commercial vegetable production in Ontario
The Wellington area has reached the degree day thresholds for the emergence of 2nd generation onion maggot and cabbage maggot. In… Continue Reading Degree days for root, bulb and leafy vegetable pests – 25 July 2011
Powdery mildew has also arrived in Ontario. Unlike many fungal pathogens, powdery mildew does not require prolonged leaf-wetness for infection… Continue Reading Powdery Mildew in Cucurbits
Daytime temperatures over 30 C and/or nighttime temperatures over 20 C during flowering have a large impact on the snap… Continue Reading Snap Beans in Hot Weather
Onion downy mildew has been reported in Ontario. This disease appears as a purple-grey, velvet-like growth on the leaves usually… Continue Reading Downy Mildew in Onions
Here are links to some past posts about late blight that may still be of interest: Late blight in tomato –… Continue Reading Late blight – previous posts
As reported last week, late blight has been confirmed in a tomato field in Essex County. It was found in… Continue Reading Tomato late blight management in Ontario
The Windsor area has reached the degree day threshold for emergence of the 2nd generation of carrot rust fly. The Wellington… Continue Reading Degree days for root, bulb and leafy vegetable pests – 18 July 2011
Michael Celetti, OMAFRA, Plant Pathologist – Horticulture Crops Program Lead Late blight has been confirmed in a tomato field in Essex… Continue Reading Late Blight arrives in Ontario in 2011
J. Chaput, OMAFRA, Minor Use Coordinator, Guelph The Pest Management Regulatory Agency (PMRA) recently announced the approval of an emergency… Continue Reading Quebec and Ontario Baby Spinach Growers Receive Urgently Needed Emergency Use Registration for Seed Corn Maggot
Bradford/Holland Marsh, Sarnia, and London areas have reached the degree day threshold for emergence of the 2nd generation of onion… Continue Reading Degree days for root, bulb and leafy vegetable pests – 11 July 2011