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
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.
July 15, 2021 Onvegetables report
Cucurbit downy mildew has been confirmed on cucumber at one location in Norfolk County and two additional locations in Kent County. Squash bugs are active on pumpkins and squash.
Downy mildew identified in Ontario cucumbers
Plants in most areas are still very small and many grower will not have started their preventative fungicide programs. Now that the disease has been confirmed in Ontario, fungicides should be applied as soon as possible.
Vegetable Crop Reports Sept. 10 – 17 | ONvegetables
ONvegetables reports that wet soil conditions are conducive to infection by Oomycetes such as Phytophthora which can lead to extensive damage in the field, and can lead to storage rots. Workers harvesting pumpkins and squash with Phytophthora infections should sanitize their hands after handling infected fruits before handling uninfected fruit. Management of Phytophthora infestation in cucurbit fields requires a long (4-5 year) rotation.”
Ontario Vegetable Crop Reports for Sept. 3, 2020
Symptoms of Gummy Stem Blight in winter squash include hot spots of stems with oozing lesions, and distinctive patterns on the skin of butternut squash.