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Tag Archives: Downy Mildew
Downy Mildew Identified on Hemp (Cannabis sativa) in Southwestern Ontario
By: Amy Fang Shi, Sean Westerveld, Jim Todd and Melanie Filotas Downy mildew of hemp (also known as cannabis downy mildew) has been identified in multiple hemp fields in southwestern Ontario. The disease first appeared in early September and was … Continue reading
Posted in Industrial Hemp
Tagged Diseases, Downy Mildew, Hemp, Industrial crops, Industrial Hemp, pest control, Pest Management, Pests
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Presidio Fungicide Registered for Basil, Hops and Edible-Podded Beans
By: J. Chaput, OMAFRA, Minor Use Coordinator, Guelph The Pest Management Regulatory Agency (PMRA) recently announced the approval of URMULE registrations for Presidio Fungicide for control of downy mildew on field and greenhouse basil and downy mildew of hops, and … Continue reading
Hop Leaf Stripping in Ontario
Leaf stripping (removing lower leaves and laterals; Figure 1) to increase air flow is a common cultural practice to manage hops downy mildew (P. humuli). Leaf stripping is performed earlier in Ontario than in other growing regions due to a shorter … Continue reading
Posted in Hops, Hops Production, Uncategorized
Tagged Cultural management, Downy Mildew, Hops, Hops Production, Leaf Stripping, Research
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2018 Downy Mildew Control Strategy for Cucumber Crops — ONvegetables
Specialty cucurbit growers may be interested in the following InfoSheet on downy mildew control strategies in cucumber crops written by Elaine Roddy, OMAFRA Vegetable Crops Specialist. Note that not all products registered on cucumber for downy mildew are registered on all … Continue reading
Continue managing late season downy mildew in hops
As most growers are aware, downy mildew is extremely active in Ontario hops this year due to the ideal conditions for development of the disease. For new growers, an article on identifying symptoms of this disease can be found in … Continue reading
Posted in Hops, Hops Pest Management, Uncategorized
Tagged Downy Mildew, Hops pest management, Hops pesticides
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Using Ridomil for early season hop downy mildew control
With recent warm weather, hops are starting to emerge in many parts of the province, and growers are thinking about early season downy mildew control. What follows are some answers to questions we often receive about using Ridomil in Ontario … Continue reading
Posted in Hops, Hops Pest Management
Tagged Downy Mildew, Hops, Hops pest management, Hops pesticides
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