The Grower March 2022

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MARCH 2022

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NEIGHBOURHOOD WATCH

The right chemistry makes good neighbours

The relationships between farmers and neighbours are not celebrated enough in rural Canada. Proactive communication goes a long way when starting up bird bangers or spreading manure. In this case, grape grower Tom Wiley (middle) chats with neighbour beekeeper Dennis Edell (left) about the success of his summer oils to control insects and disease in his Jordan, Ontario vineyard. Ryan Brewster, (right) is the vineyard consultant who steered the crop protection program to softer chemistries to prevent bee kills. Photos by Glenn Lowson. KAREN DAVIDSON The life expectancy of a vineyard is about 25 years, longer than your dog’s but usually shorter than your neighbour’s. As Tom Wiley has discovered, the good will of his longtime beekeeper neighbour is priceless. The grape grower with 50 acres under cultivation near Jordan, Ontario, got into the cross hairs of this valued relationship when he used systemic insecticides with unfortunate results in the summer of 2017. The product label warned about toxicity to bees, and this information was shared with his neighbour. Dennis Edell of D’s Bees Honey is an active hobby beekeeper with 10 to 14 hives and at the time was on the board of directors for the Ontario Beekeepers’ Association, serving as chair of the issues management committee.

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The product was sprayed according to label directions, but sadly, Edell discovered dead bees at the doorstep to his hives. He was not amused as he was receiving reports of abnormally high bee losses from beekeepers in proximity to grape growers in the intensively farmed Niagara region. The story was featured in the November 2018 edition of the Ontario Bee Journal. Edell and his issues management committee were deeply involved in lobbying the Ontario government to limit the widespread use of neonicotinoids. And he had personal experience to share. Imagine the chagrin of Wiley and the immediate need to mend fences. He turned to Ryan Brewster, a grape and tree fruit agronomist based in St. Catharines, Ontario with a crop consultancy serving about 100 clients in the Niagara peninsula. Wiley was not alone, as he realized other growers were facing similar challenges in controlling pests and diseases.

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“The fall-out from pesticide re-evaluations is real,” says Brewster. “There’s a shrinking tool box and farmers have to adapt to new options such as softer chemistries and different cultural practices.” Going back to 2005, Brewster recalls how the Pest Management Regulatory Agency (PMRA) decided to ban organophosphates. In this category was Parathion and Guthion, products used to control grape berry moth among many other pests. While effective, they had environmental and human health side effects. As challenging as it was to grow grapes without these products, growers realized that other secondary pests were not being eliminated either. Soft-scale insects and mealybugs, for example, still continued to cause damage. Mealybugs are detested for the powdery black secretions covering their bodies. Moreover, about 2008, researchers identified mealybugs as vectors for grapevine leafroll virus. Continued on page 3

Crop protection/potatoes

B Section


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