MARCH 2021
CELEBRATING 142 YEARS AS CANADA’S PREMIER HORTICULTURAL PUBLICATION
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The perfect storm in accessing crop protection products
In recent years, the mergers of global crop protection companies promised robust research and development pipelines. But the reality is that fewer products and label extensions will come to horticulture. That’s because there’s a bottleneck of reduced trial capacity at the third-party Pest Management Centre in Ottawa. Apple and blueberry grower Charles Stevens, Wilmot Orchards, near Newcastle, Ontario outlines the challenges ahead. Photos by Glenn Lowson. KAREN DAVIDSON Clusters of apples, big enough to cup your hands around, are no accident. They are the result of hand-thinning heavy crop loads in the spring or spraying at bloom time to inhibit pollen germination. These sprays must be applied precisely between 80 per cent petal fall and a fruitlet size of 16 mm.
Because apple fruitlets can double in size in four to five days, there’s a critical window on whether and when to apply a thinning product on which varieties. Empty the pockets of an apple grower and you’ll find some treasure: a caliper to measure fruitlets. To this day, apple thinning is equal parts science and art. The COVID-19 crisis has revealed several fissures in all crop management systems. Difficulties continue in accessing
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agricultural workers to perform many seasonal and time-sensitive tasks. In the specific example of apples, if manual labour is not available, then growers must totally rely on chemical thinning aids. But as Charles Stevens points out, access to new products such as apple thinners is also constrained under reduced capacity at the Pest Management Centre (PMC) based in Ottawa, Ontario. Given the mandate of the agency, its most recent
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spending figures seem meagre at $8.9 million for the 2020-2021 fiscal year. Consider that the agency – under the auspices of Agriculture and Agri-Food Canada -- is asked to perform trials for new minor use crop protection products and also mitigate regulatory challenges.
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