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While some areas are reporting higher numbers of diamondback moth larvae (shown above), it takes 100-150 larvae per square metre in immature to flowering plants or 200 to 300 larvae per square metre in plants with flowers and pods to cause enough damage to warrant a spray. Natural controls, including beneficial insects, tend to keep numbers below thresholds…
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This article provides a review of thresholds for major insect pests of canola, as well as background on how they were established and how following thresholds can improve profitability…
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Some farmers harvesting crops this spring have noticed higher numbers of insects in their samples. These are primarily seed-eating carabid beetles and fungus-eating beetles (shown above)…
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Results from the disease survey show increases in sclerotinia stem rot incidence. Blackleg incidence is down from 2015 in Manitoba and Saskatchewan and up in Alberta…
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You may find quite menagerie of insects in your net after 10 sweeps. Can you correctly identify these five?…
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Before spraying, make sure your canola is at the right stage to be damaged by the worms and that the worms are actually the species you’re trying to control. Here’s how to tell the difference…
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Pea leaf weevils (bottom) can be found in canola but the only weevil of concern is the cabbage seedpod weevil (top). Thank you Shelley Barkley of AAF for the excellent photos…
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1. With phosphorus, ultimately the form you apply is less important than the amount you apply. Crop nutrition specialist Rigas Karamanos used the graph below to show the chronic under-application of P year after year…
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When it comes to maintaining Canada’s reputation as a high quality canola supplier, everyone in the canola value chain has an important role to play…