Phytophthora infections are being reported in watermelon, pumpkin and squash across the SW Ontario growing region. Once established in a field, there are no effective treatments that will control the spread. If the infection is limited to an isolated area, and has not begun to spread, destroying the infected plant may prevent further spread.
ONvegetables
ONvegetables VCR | July 4, 2024
There are early reports of powdery mildew and Downy mildew in squash in squash in the Great Lakes region. This disease usually appears in late-July. Downy mildew on cucumbers is present in multiple growing areas.
ONvegetables VCR | June 26, 2024
Cucurbit downy mildew has been confirmed in Norfolk County. This is the first report in Ontario for 2024.
ONvegetables | Vegetable Crop Production Guide for Ontario
OMAFRA’s new Guide to Vegetable Production in Ontario – Publication 839 is now available.
This guide replaces the discontinued Publication 363 – Vegetable Production Recommendations.
ONvegetables VCR | July 4, 2023
Cucurbit downy mildew has been identified in a cucumber field in Kent County, Ontario. Disease presence is very low with less than one percent of the plants exhibiting lesions at this time.
Cucurbit Downy Mildew present in multiple regions
Reports of the presence of Cucurbit downy mildew were published by Plant Pathologists in North America.
Ontario CDM Spore Trap Network August update
University of Geluph researchers monitor Cucurbit downy mildew in Kent and Norfolk counties using spore traps.
Ontario CDM Spore Trap Network July update
Spore traps installed on June 7th in Ontario Canada detected no Cucurbit downy mildew until July 29, 2021.
