The decision to apply a fungicide to prevent sclerotinia stem rot may be generalized by answering these four questions: (1) Have environmental conditions prior to flowering been wet enough for apothecia development and survival? (2) Is the canola crop canopy dense and is yield potential high? (3) Does the weather forecast predict precipitation and/or humidity during the flowering period? (4)…
Diseases
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Canola cultivars are available with improved tolerance to sclerotinia stem rot. This reduced severity of sclerotinia stem rot is effective but may not match the same level of control as a fungicide application. Therefore under high risk of disease development applying a fungicide to these cultivars may still be necessary…
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Pythium species, Fusarium species and Rhizoctonia solani – the "three amigos" – can cause seed rots, root rots and stem decay on young canola plants. Seed treatments are generally pretty good, but Krista Anderson from Bayer, Mark Belmonte from University of Manitoba and Autumn Barnes from the CCC explain the factors that can increase risks…
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Got canola emergence issues? Little canola plants are vulnerable to many different risk factors, including seedling diseases. Seed treatments are usually very good at managing the common seedling disease pathogens of canola, however seed, seedling and root rots can flare up under the right circumstances. Here are details about the three pathogens in the canola seedling disease complex, and the…
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How is clubroot sanitation like exercise? You don't do it unless you have a plan. In this podcast, Mike Harding, plant pathology research scientist with Alberta Agriculture and Food, Barb Ziesman, provincial plant disease specialist with Saskatchewan Ministry of Agriculture, and Dan Orchard, agronomy specialist with the Canola Council of Canada, explain the three levels of clean, and the situations…