Canola Watch – July 2, 2020

July 2, 2020

QUIZ – SCLEROTINIA STEM ROT RISK

These three questions will help canola farmers and agronomists assess the sclerotinia stem rot risk in their areas.

READ MORE

FACTORS IN THE SCLEROTINIA SPRAY DECISION

The decision to apply a fungicide to prevent sclerotinia stem rot may be generalized by answering these four questions: (1) Have environmental conditions prior to flowering been wet enough for apothecia development and survival? (2) Is the canola crop canopy dense and is yield potential high? (3) Does the weather forecast predict precipitation and/or humidity during the flowering period? (4) Is the pathogen present in sufficient quantities?

READ MORE

SCLEROTINIA STEM ROT: TIMELINE FOR INFECTION

Once petals drop and start to decay, infection proceeds very quickly with lesions being visible in as little as 24 hours.

READ MORE

FUNGICIDE FOR SCLEROTINIA: TIMING AND PERFORMANCE TIPS

Timing and coverage are keys. For most fungicides, the recommended window for application falls between 20 and 50 per cent bloom, with optimum timing typically around 30 per cent bloom.

READ MORE

SCLEROTINIA RISK WITH HOT WEATHER

Hot, dry weather reduces infection rates and the progression of sclerotinia within the plant. The disease risk is limited when current conditions are dry, max daily temps are 30°C or more, and forecast is for this to continue for seven to 14 days. Hot weather can also increase flower and pod abortion, which could reduce […]

READ MORE

GENETIC RESISTANCE TO SCLEROTINIA: UPDATE

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.

READ MORE

CONNECTIONS – JULY 2

Canola Watch has many valued connections, including the Canola Council of Canada, SaskCanola, Alberta Canola and Manitoba Canola Growers, as well as research institutions, government extension departments, ag businesses, universities and other commodity groups. This section provides timely support for canola-related projects outside of Canola Watch.

READ MORE


Canola Watch is a free, unbiased, timely and research focused weekly newsletter from the Canola Council of Canada Crop Production Team

You can subscribe to Canola Watch and search all the articles on the Canola Watch website

contact a Canola Council of Canada agronomy specialist

Upcoming Events

Covid resources for Alberta Farmers
Cash Advance Alberta

Join our mailing list to receive important news and event updates!

Subscribe to our newsletters