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If one in 10 plants has a blackleg rating of 2 or worse, this is a clear sign that the blackleg pathotypes in a field do not align with the……
Seed: How much blackleg before I rotate resistance?
September 13, 2017
Diseases
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Canola Watch quiz: Stem disease
September 7, 2017
Check stems before and after swathing for clear signs of disease. If you see damage like that shown in this quiz, can you identify the disease?…
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Identifying verticillium. Or is it blackleg, sclerotinia or grey stem?
September 7, 2017
If whitened canola stems are peeling and have black spots under the peeled layer, the cause is likely verticillium. Seeing this? Please get it checked out and let us know. We're trying to find out how widespread the disease is…
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Clubroot: Scouting and management
September 7, 2017
Clubroot scouting continues across the Prairies this week, especially in areas where it was just recently confirmed…
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Clubroot: How to scout
August 30, 2017
When plants are still living, galls are white and fleshy, like a potato. Large galls can be the size of a plum, and grape-sized galls are common…
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Clubroot: How to manage the disease
August 30, 2017
If clubroot is present in a field, then take measures to prevent the build-up of spores to limit yield loss in future canola fields. To prevent the build up…
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Seed: Understanding clubroot resistance and the classification system
August 30, 2017
Clubroot resistant (CR) canola varieties are key tools used to delay clubroot establishment and manage clubroot disease on the farm…
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Pre-harvest disease scouting: 8 diseases to look for
August 10, 2017
Diseases are usually easiest to see and diagnose at this stage of the season. The photo shows blackleg in a clipped canola stem. Patches of dying or prematurely-ripening plants are obvious areas to scout (and show up really well with drone images), but even clean-looking fields can provide some early warning if you take time to look…
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Sclerotinia: Late-window sprays
July 19, 2017
If conditions are dry at early flower and then it rains at 40% to 50% flower, spraying at the end of the window may be effective. This would be especially true if moisture also promoted a longer flowering window due to later compensatory growth…