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While scouting canola fields at flowering and podding stages, dig up a few plants in each field and look at the crown and primary root. If the crop has above-ground symptoms, compare the roots of healthy and unhealthy plants. That might help you discover the problem…
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Fungicide is probably not necessary in a field with at least a two-year break between canola crops, blackleg-resistant varieties and rotation of genetics. But if factors suggest a fungicide ROI, it has to be applied before the four-leaf stage…
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Scientific research in Western Canada has identified three factors that increase the risk of canola yield loss in short rotations. They are blackleg, clubroot and cabbage root maggot. Clubroot will drive the need for longer breaks between canola crops on more and more farms…
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Step 1. Sample Collection The ideal time to pull and assess plants for blackleg infection is at 60% seed colour change, which is around swath timing. Plants should still be……
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Field observations suggest that blackleg may be increasing in some areas. Official disease survey results for 2018 will be announced at Western Forum October 17-19. In the meantime, farmers and agronomist may still have time to count the percentage of plants that are diseased…
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New tests allow farmers to identify the blackleg races in their fields. With this information, farmers can choose canola varieties with resistance to those races…
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Take a random look at a few canola roots in each field to see what's going on. Also dig up the root area for plants that look less than healthy for no apparent reason. This plant has foot rot…
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How many plants recovered? Are they at early stages and at risk of heavy blackleg infection? What is the crop nutrition situation?…