Scouting for sclerotinia at swathing lets producers know how much disease pressure is lurking so they can plan accordingly. PHOTO: CLINTON JURKE/CANOLA COUNCIL OF CANADA

Manitoba sclerotinia picture mixed for 2025

Variations in weather and crop development in this year’s Manitoba canola fields make blanket sclerotinia outlooks hard to pin down

Variations in weather and crop development in this year’s Manitoba canola fields make blanket sclerotinia outlooks hard to pin down



Canola blooming in a field in south-central Manitoba.

Canola council arms against sclerotinia

To spray fungicide or not to spray? Canola Council of Canada may have the answer

Wet field conditions may mean higher sclerotinia risk. The Canola Council of Canada has launched a three-part planning tool and resource library to help take the guesswork out of fungicide spraying decisions.


With the recent wet weather experienced in Manitoba, producers looking to win the fight against sclerotinia should apply fungicide at the early bloom stage.

Wet conditions stoke sclerotinia fears

Wet weather means growers might be headed back to the trenches against the fungal disease

The ground is wet again, and that means potential sclerotinia issues for Manitoba canola growers. Timely fungicide application is crucial to stay ahead ofthe disease.


VIDEO: Beating back flea beetle pressure

VIDEO: Beating back flea beetle pressure

This insect foe need not get the upper hand in your canola crop

Canola being the high-value crop that it is, it’s easy to understand the anxiety for growers when flea beetles begin making a meal of plants that are freshly emerged from the soil. At Manitoba Ag Days last week, Chris Manchur, agronomy specialist with the Canola Council of Canada, spoke about the major pest pressures in

Verticillium stripe and blackleg symptoms can look similar, but once you know what you’re looking for they can be quickly differentiated.

Verticillium stripe symptoms

Is it verticillium stripe, blackleg or sclerotinia? Here are ways to find out

The Canola Council of Canada flags several verticillium signs: Stem striping When the crop is full height, but still green, infected canola plants will often have a two-toned stem — half healthy and green and half discoloured and drying down. This is where the disease gets its name. Leaves can show similar symptoms: healthy on

"We have seen that
the crop is more
likely to lodge when the
stem is weakened by
verticillium and, with
these pod-shatterresistant
varieties that
are left to stand longer,
you might have parts
of the crop lying down.”

Verticillium gains ground on blackleg, sclerotinia in Manitoba

Survey numbers sum up Manitoba’s top canola disease issues last year

Farmers preparing to seed canola might want to take a minute to visit the Canola Council of Canada’s website. The national group, drawing on data from the 2022 Manitoba Canola Disease Survey, has summed up the most significant disease threats growers faced last year. Posted through the council’s Canola Research Hub, the information also covers


“... we can use RNAi technologies as a solution to improve global food security.” – Mark Belmonte, University of Manitoba.

Genetic attack cutting edge of sclerotinia fight

Hacking messenger RNA can prevent fungal disease from propagating

Most pesticides work by getting into a cell and disrupting its working parts or pathways. By applying the right chemistry at the right time you can shut down a pathogen’s engine and bring it to a stop. But despite all the available chemistry, sclerotinia always finds a way to keep driving around untouched. Mark Belmonte,

Flea beetle is one of the pests a Manitoba researcher is targeting with biotechnology.

Targeting your crop enemies

Is the future of crop protection environmentally friendly biotechnology?

So far biotechnology in agriculture has driven the use of crop protection products through genetically engineered herbicide resistance. But the next wave could displace at least some of those applications by opening up another front in the war on two familiar canola concerns — sclerotinia and flea beetle. Mark Belmonte, a professor of biological science