Diseases – Page 2

by wendymcfaddensmith June 10, 2026 0

Clearing the Cobwebs: Copper Use for Grape and Stone Fruit Diseases

Katie Goldenhar, OMAFRA Plant Pathologist – Horticulture & Wendy McFadden-Smith, Tender Fruit and Grape IPM Specialist Do you really knowContinue Reading

by Kristy Grigg-McGuffin June 5, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: June 5, 2026

Bugging out over first covers for pest activity including scale, plum curculio and mullein bug.

Underside of grape leaf with white sporulating lesions

by wendymcfaddensmith June 3, 2026 0

Diseases Fresh Grapes Grapes Uncategorized Wine Grapes

We want your grape downy mildew!

For the 2026 growing season, OMAFA has funding to screen Ontario grape downy mildew for sensitivity to phosphorous acid. ContactContinue Reading

by Kristy Grigg-McGuffin May 29, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: May 29, 2026

A welcome warmth across the province comes just in time for thinning!

by Kristy Grigg-McGuffin May 23, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: May 22, 2026

Apples are inching into fruit set, but the cool, windy weather has them stuck in slow motion.

Image of developing pear fruitlet infected with fire blight

by Kristy Grigg-McGuffin May 19, 2026 0

Apples Diseases Pears Pest Management

Fire Blight Risk Increases Across Province

Warmer weather and likelihood of dew increases the risk of blossom blight this week

leaf frost damage cupping dead tissue apple

by Erika DeBrouwer May 16, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: May 15, 2026

Ontario apple leaves are causing some discourse regarding identification – frost or foe?

by Erika DeBrouwer May 9, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: May 8, 2026

This spring’s been giving more chills than cheers for growers.

by Kristy Grigg-McGuffin May 1, 2026 0

Apples Diseases Insects Pest Management

What the Crop?! Apple Update: May 1, 2026

Cooler temperatures are buying time for growth and pest risk – but raising the stakes for frost damage!

by Kristy Grigg-McGuffin April 27, 2026 0

Apples Diseases Featured Pears Pest Management Tender Fruit

Ontario Fire Blight Prediction Maps Now Available

Fire blight decision management tool now available for Ontario apple and pear growers