May 8, 2013
The highest risk operation to introduce and spread clubroot is the one that moves the greatest amount of soil throughout the farm and across the countryside. Field equipment carries a lot of soil, which is why equipment sanitation is an important way to contain the disease. Others common ways to move soil include utilities companies working from field to field,…
April 4, 2013
These photos from canola plots grown in clubroot-infested soils in Quebec show how rotation, especially for MS and S varieties, improves yield. Rotation also plays an important role for growers relying on R varieties in clubroot infested fields. Short rotations using resistant varieties will select quickly for clubroot pathotypes that are not controlled by the genetic resistance. This can rapidly…
March 6, 2013
Give the brand new online Canola Diagnostic Tool a pre-season test drive at www.canoladiagnostictool.ca. Start with a problem scenario that you encountered in a canola field in 2012, and work through the tool to see what potential causes it provides. Read the cause descriptions and “ways to confirm” to determine which cause is most likely…
February 7, 2013
Keys to blackleg management: 1. Assess your risk and avoid planting into a high risk situation. 2. Add diversity to your operation by rotating crops, canola varieties and fungicides. 3. Learn to identify blackleg and assess disease levels in your fields…
January 31, 2013
Here is a list of labs that service canola growers in Canada. Labs are organized under the following headings: Soil nutrient analysis, Plant tissue nutrient analysis, Seed quality tests, Disease diagnostic on plant tissue, Soil analysis for clubroot, Herbicide resistant test for weeds, Herbicide carryover in soil, and Pesticide residue in plant tissue…
January 9, 2013
—All areas of the Prairies are at risk. Geography does not provide immunity to this disease. —Prevalence of sclerotinia stem rot has a direct correlation to above-average moisture. If a field has regular rains or high humidity or both from two weeks before flowering and through flowering, then infection will occur. If these conditions continue after flower, severity of the…
December 5, 2012
This calendar shows you the major pests and problems to look for in canola at each point in the season…
December 5, 2012
Growers who do not have the time for timely scouting may want to hire an agronomist to support their own scouting program. Most agronomists are also pressed for time, and may not be able to spend one to 2 hours a week scouting each canola field, but agronomists can supplement the time growers spend scouting, and provide experience and skills…
November 7, 2012
Sclerotinia and blackleg remain the top two most important canola diseases, but aster yellows are a hot topic after a bad year in 2012. The Canola Council of Canada agronomy team came up with the following 10 questions about aster yellows. Chrystel Olivier, research scientist with Agriculture and Agri-Food Canada in Saskatoon, answered them the best she could given what…
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