Diseases

  • Patch management for clubroot: You can do it! Here’s how

    Diseases

    If you find a patch of canola plants with clubroot galls, take action now to contain it. This is especially important (1) if clubroot is new to the farm or (2) if the field is seeded to a clubroot-resistant (CR) variety and the patch could have a new pathotype that you need to contain.

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  • Got patches? Tips for pre-harvest disease scouting

    Diseases

    Sclerotinia stem rot could be a big problem in areas that started dry then turned wet and stayed fairly moist during and after flowering. The dry start to the season meant a lot of fields didn’t get sprayed with fungicide, even though conditions prior to and following flowering have favoured the disease in those areas.

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  • How to test soil for clubroot

    Diseases

    To check fields for the presence of clubroot DNA before you see visual symptoms, you can try a random soil test.

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  • Watch the new clubroot management video

    Diseases

    The video includes insight from various Canadian clubroot researchers. It explains what clubroot is, and how to reduce the risk of introducing clubroot to your farm, slow the spread of clubroot when it does arrive, and manage the impact if clubroot is established.

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  • Does canola need a second app of fungicide?

    Diseases

    Growers may see good reason for two applications (7 to 14 days apart as specified on the product label) if conditions are good for fungal growth and the crop flowers for a long period.

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  • Does late-window spraying for sclerotinia stem rot pay?

    Diseases

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  • Help for the sclerotinia spray decision

    Diseases

    The decision-making process on whether to spray for sclerotinia stem rot in canola begins about three weeks before flowering. The situation leading up to that point is almost irrelevant, given the canola plant’s ability to crank up yield potential in response to improved growing conditions. Sclerotinia stem rot can go from no risk to high risk with a timely period of regular rains and humidity.

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  • Sclerotinia stem rot PODCAST

    Diseases

    Canola Watch teams up with Real Agriculture to offer podcasts recorded live at canolaPALOOZA 2019 at Lacombe, Alberta. In this podcast, the first of five in the series, hosts Jay Whetter and Shaun Haney interview Luis Del Rio with North Dakota State University and Kelly Turkington with Agriculture and Agri-Food Canada to talk about sclerotinia stem rot risk factors and management.

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  • The scouting toolkit

    Diseases

    Smart phones and mobility-enabled tablets could be the most valuable scouting tools. But what else should be in your canola scouting kit?

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  • Canola Watch quiz – Clubroot true/false

    Diseases

    Test yourself with these 10 true or false questions about clubroot. Make sure to ‘submit’ and read the answers for lots of agronomy details.

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  • Clubroot 101: How to keep spores low and local

    Diseases

    If you read nothing else about clubroot, read this article. It covers the basic management practices for all canola growers. The whole point of these core practices is to keep clubroot spores low and local.

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  • The risks from high canola frequency

    Diseases

    Blackleg disease rating: 2

    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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  • Interpreting blackleg race ID test results

    Diseases

    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 green. Cut just below the crown of the plant into the root material to assess. “Look for black discolouration within the hypocotyl tissue, often appearing […]

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  • Clubroot management: Don’t wait until you see dead patches

    Diseases

    Healthy-looking plants can still have galls that release millions, possibly billions of spores.

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  • Saskatchewan updates clubroot map

    Diseases

    The Saskatchewan clubroot distribution map includes all findings of clubroot and detections of the clubroot pathogen from 2008 to 2018.

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