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.
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 factors that tend to favour each of them.
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 for each.
Respirators for pesticide applicators are NIOSH/MSHA/BHSE approved organic-vapour-removing cartridge with a pre-filter approved for pesticides or a NIOSH/MSHA/BHSE approved canister for pesticides.
A disinfect like bleach or SprayNine is an essential part of the scouting kit. These will disinfect tools and boots between fields.
One plan for 2020 could be to identify exits for each field and then buy seed to grass in those entrances and exits, providing an extra level of clubroot biosecurity.
CR seed is recommended. So the real decision is whether to use CR varieties with the base (Mendel or first generation) resistance trait or use CR varieties with second generation traits.
Fall is a good time to collect soil for a clubroot DNA test. Information can be used to help with seed and disease management decisions.
This week’s quiz is based on information in this video, “Clubroot in Canola”
Manitoba Agriculture announced this week it has discovered a clubroot pathotype in South Central Manitoba that is able to overcome the first generation clubroot resistance. The article includes a ‘recipe’ to help growers limit clubroot damage in canola.