Four canola diseases to watch for

Four canola diseases to watch for

Is that canola crop afflicted by blackleg, root rot, both, or something else entirely? It’s a messy question farmers and agronomists encounter every year. Presenters tried to untangle those problems at CanoLAB in Vermilion this winter. Here are four diseases to watch for in canola fields this summer, and tips on diagnosing them.

Understanding temperature inversions

Understanding temperature inversions

Those calm, cloudless days may not be 
the perfect days to get out the sprayer

If you’re planning to spray, beware air temperature inversions on calm, cloudless days. That was the message from Andrew Thostenson during the Canola Council of Canada’s CanoLAB at Vermilion’s Lakeland College this winter. Thostenson is an extension pesticide specialist with North Dakota University. Avoiding pesticide damage during an inversion comes down to understanding how inversions work and recognizing the environmental conditions that cause them, Thost­enson […] Read more


The need for better record keeping

Reporter's Notebook: It’s not one of agronomy’s most exciting issues, but it’s a need that’s not going away

At CanolaLAB in Vermilion in February, record-keeping kept popping up during the agronomy sessions. Murray Hartman of Alberta Agriculture and the Canola Council’s Dan Orchard facilitated an interesting session on plant stand establishment. Target plant stand recommendations have dropped a little, but before farmers cut seeding rates, they need to know how many plants are […] Read more

Murray Hartman talks plant stand establishment during CanolaLAB at Lakeland College in Vermilion, Alberta

Lower canola target plant stands

With newer canola varieties, farmers can hit optimum yields with lower plant counts

New canola varieties and changing economics have pushed target plant stands lower, says Murray Hartman, oilseed specialist with Alberta Agriculture. The “economic sweet spot” is now four to six plants per square foot, Hartman told farmers and agronomists at the Canola Council of Canada’s CanoLAB in Vermilion, Alberta. Hartman recently reviewed published trial data looking […] Read more


Cabbage seedpod weevils are attracted to the buds on early canola plants. They feed on the buds, migrating as the crop comes into bloom.

When to spray cabbage seedpod weevil

If you have to spray for the cabbage seedpod 
weevil, get the timing right

The first time Alberta grain farmer Jay Schultz remembers hearing about cabbage seedpod weevil was in 2005 at the University of Alberta when Dr. Lloyd Dosdall warned that it could become a major pest in the province. Schultz, who farms 6,000 acres near Standard, Alta., said that he never really paid attention, that is, until […] Read more



Lining up the beneficial beetles from an insect trap. These are melanarius beetles, which are ground beetles that belong to the carabid family. Some beetle species found in Western Canada can live up to four years.

PHOTOS: Learning at CanoLAB

Farmers at CanoLAB had a hands-on look at canola pests and problems

Grainews field editor Lisa Guenther attended the Canola Council of Canada’s annual learning event CanoLAB at Lakeland College in Vermillion on February 22. CanoLab offers a chance to see live plants and insects up close, while they talk with Western Canada’s top researchers and extension workers about current production issues. Watch the Canola Council’s event […] Read more

Cleavers can have a negative impact on canola and pulse crops.

Controlling cleavers without quinclorac

With quinclorac off of the herbicide menu, farmers will need to use other tools

Last spring, the Western Grains Elevator Association (WGEA) and the Canadian Oilseed Processors Association (COPA) advised growers that they would not accept quinclorac-treated canola grown and harvested in 2016. The reason for this announcement was to make sure that grain shipped to customers in other countries remains in compliance with regards to Maximum Residue Limits […] Read more


Blooming rapeseed field at sunset

Back to the agronomy basics in canola

Experts advise growers to focus on quality seed and nitrogen before less conventional inputs

Canola growers have been asking agronomists questions about promoted products. Do they work? And if so, are they worth the additional cost? Two researchers, Murray Hartman, oilseed specialist with Alberta Agriculture and Forestry, and Neil Harker, research scientist, weed ecology and crop management, Agriculture and Agri-Food Canada, conducted a study to test the inputs that […] Read more

farm equipment seeding canola

How do you set a good seeding rate?

Have a targeted plant population in mind for this season? Remember that several post-seeding stresses, including cool temperatures (frost), weeds, moisture and insects, might keep your plant stand from fully establishing. And while some of these issues, like weather, may be beyond your control, insect and disease pressure can be managed with the right seed […] Read more