The International Clubroot Workshop in Edmonton August 7-9 offers a unique scientific program with an impressive line-up of international and Canadian clubroot researchers. Farmers and agronomists are welcome…
Canola Watch Posts
-
-
Manitoba: Sclerotinia stem rot: Timeline for infection Saskatchewan: Sclerotinia stem rot: Timeline for infection Alberta: Map of the Week – Cabbage seedpod weevil counts…
-
-
Can you identify these four insects?…
-
-
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…
-
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…
-
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 – as long as there was enough moisture before flowering to get apothecia germinating. In this situation, later sprays could be especially effective if moisture also promoted a longer flowering window due to later…
-
Small amounts of spores can lead to yield-robbing levels of sclerotinia in continued moist conditions. A petal test to confirm the presence of sclerotinia DNA on petals could be used to provide an indication of pathogen pressure at the time of petal collection…