July 2, 2020
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…
August 8, 2019
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…
July 25, 2019
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…
July 10, 2019
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July 4, 2019
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…
July 4, 2019
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…
September 6, 2018
Predicting sclerotinia stem rot severity is difficult. This quiz is a review of management decisions for 2018, including a specific look at DNA petal tests. Please take a minute to do this quick survey…
July 5, 2018
The three points of the disease triangle are host, pathogen and environment. When it comes to sclerotinia stem rot in canola in Western Canada, the disease triangle hinges on one component: Environment…
July 5, 2018
The sclerotinia stem rot infection cycle begins when sclerotia in the soil (left from the last time an infected crop was produced on that field) take up enough moisture to germinate and form little mushrooms known as apothecia. Spores are then released into the air from the mushrooms. Under ideal warm and moist conditions, it takes about two to three…
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