Category Archives: Fresh Grapes
W. McFadden-Smith (OMAFRA), S. Poojari and J.P. Parent (AAFC) Symptoms of Grapevine leafroll disease (GLD), caused by a number of GLRaVs, are more apparent on red-fruited vinifera cultivars than whites and they vary based on variety of factors including environmental conditions, … Continue reading
W. McFadden-Smith (OMAFRA), S. Poojari and J.P. Parent (AAFC) A few weeks ago, it was easy to find mealybugs and scales on foliage and fruit in vineyards that had not been sprayed with Movento. Mealybugs and scales secrete a sugary … Continue reading
The frequent rains, heavy dews, fog, overcast skies and moderate temperatures have promoted infections by downy and powdery mildew. Strictly protectant fungicides cannot stand up to the heavy rains that have occurred this year. Dense canopies prevent air movement to … Continue reading
Kristen Obeid, OMAFRA Weed Specialist – Horticulture Glyphosate resistant Canada fleabane has been confirmed in 28 counties throughout the province. Some counties also have multiple resistant Canada fleabane which is resistant to both glyphosate and ALS or group 2 herbicides. … Continue reading
Jennifer Jarvis, Stakeholder Communications and Marketing Advisor, OMAFRA In 2016, many areas of the province saw very warm and dry conditions, creating challenges for horticulture and field crop producers. Many wells were still dry leading into the winter. In other … Continue reading
Hannah Fraser, Entomologist – Horticulture, OMAFRA Guelph The University of Guelph and OMAFRA are conducting a targeted grower participatory survey for brown marmorated stink bug (BMSB), Halyomorpha halys, in Niagara and in Simcoe as part of a larger project, using … Continue reading
Two insecticides have recently been registered for emergency use on spotted wing drosophila (SWD) on berry crops (crop group 13-07) and stone fruits (crop group 12) in Ontario.