Disease Posts

  • Phytophthora Root Rot in Soybeans

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    Categories:
    Soybeans
    ,
    Disease

    As we approach seeding season, it’s time for those growing soybeans to start thinking about keeping an eye out for soybean diseases, like Phytophthora root rot. The dry weather last year in many parts of Western Canada kept soybean diseases at bay, but it doesn’t mean that the threat isn’t there for 2019.

  • Goss’ Wilt in Manitoba: Everything You Need to Know

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    Categories:
    Disease
    ,
    Corn

    Clavibacter michiganensis subsp. Nebraskensis (CMN), which is a bit of a mouthful, is more commonly known as Goss’ Wilt. It was first discovered in Manitoba in 2009 near Roland, and in 2013 near Lethbridge and Taber, Alberta. In the next two decades, the bacteria that causes Goss’ Wilt is expected to be in almost every corn field in Western Canada. Unfortunately, the bacteria is hard to get rid of, but the damage it causes is preventable.

  • Clubroot resistant canola: Identifying Pathotypes

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    Categories:
    Disease
    ,
    Agronomy
    ,
    Canola

    The Rapid Spread of Clubroot Clubroot is a soil-borne disease that affects cruciferous crops. Most importantly for Western Canadian farmers, it causes galls to grow on the roots of canola plants, choking out nutrients from the plant, ultimately killing it. Since the disease was found in Alberta in 2003, it has continued to spread across the Prairies.

  • Low Levels of Blackleg Can Rob 20% of Your Canola Yield

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    Categories:
    Disease
    ,
    Canola

    All canola growers are aware of blackleg but its impact can sometimes be under-estimated. Although genetic resistance and general understanding of the disease has improved in recent years, there were still some significant gaps that made it difficult to manage the disease with any precision. ‘Grow an ‘R’ rated variety and you should be fine’ used to be the best standard recommendation when it came to variety selection. Fortunately, now there are more tools that are available to growers that are better at keeping the disease in check, to realize even bigger gains.

  • Blackleg Labelling: An Intro to the New System

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    Categories:
    Disease
    ,
    Canola

    Recently, growers in Western Canada may have been noticing an increased incidence of blackleg appearing in their canola crops, even in varieties with an “R” rating. It is believed that some blackleg resistance genes are losing their effectiveness on the Prairies. To help growers manage blackleg and reduce their risk for the disease, a new model has been developed to classify blackleg resistance. The new model is composed of two parts: