Home / Canola Watch / Insects / Page 18
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The economic thresholds – the point at which foliar insecticide provides an economic benefit – could be when damage reaches 50%, but leaf area loss can reach this stage fairly quickly when flea beetle numbers are high, they are actively feeding, and damage is already at 25%…
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While only a small percentage of canola fields tend to require flea beetle management in addition to seed treatment, all fields should be monitored to assess the potential threat. Begin monitoring right after emergence and through until at least the four-leaf stage. Seed treatment can be effective through most of this period, but slow starting or slow growing crops under…
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Cutworms have been observed in some regions, including the southeast Peace region and west-central Saskatchewan stretching into Alberta. In western Saskatchewan, early observations suggest that cutworms are worse in fields that had lentils last year. In general, fields that had flowering plants (crops or weed patches) in August or September of the previous year may have higher cutworm counts. These…
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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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The free BeeConnected app helps to ensure that bees and agriculture can co-exist and thrive. The application allows farmers to tell beekeepers in their area when they plan to use crop protection products (including pesticide applications and the planting of treated seed). Beekeepers who have registered their hives will receive a notification if they are within five kilometres of the…
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By planting a Buzzing Garden, we can all help to improve the number and quality of honey bee food sources, and support them in feeding their hives. Every free Buzzing Gardens kit contains seeds for five different species of non-invasive Canadian wildflowers recommended by Pollinator Partnership, and can plant a garden up to five square feet. Order your free seed…
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AAFC has published a new cutworm guide, available as a free download, with descriptions of all pest cutworms in Canada as well as helpful management tips, including this excerpt from the scouting section…
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The Canola Council of Canada has a new video describing swede midge, its life cycle and the damage it can cause canola crops in Western Canada. The video also mentions the new midge that is similar to but distinct from swede midge…
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Distorted canola growth thought to be from swede midge (Contarinia nasturtii) is likely caused by a separate midge species (Contarinia brassicola). Scientists were suspicious that two midge species were present……
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