May 15, 2013
The International Clubroot Workshop June 19-22 in Edmonton includes one day — Friday, June 21 — dedicated to clubroot extension. This is the day when growers, agronomists, municipal and county staff learn the latest in clubroot management, prevention and mitigation. Cost is $150 per day, and you are welcome to attend the whole workshop, space permitting…
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…
August 29, 2012
Pre-harvest is a good time to scout for disease severity. The photo above shows severe sclerotinia infection. This article includes sclerotinia and various other diseases to look for…
July 25, 2012
Sclerotinia could be bad this year but the window to apply fungicide has closed for most crops. Rhizoctonia foot rot, shown above, may explain some toppling plants. The weeks leading up to harvest are a good time to scout for blackleg and clubroot…
May 2, 2012
Soil on seeding equipment is a key vector for the movement of clubroot spores from field to field. Cleaning dirt from equipment before leaving a clubroot-infested field is a good disease management practice. Avoid working in known clubroot-infested fields when soil is wet and more likely to stick to equipment…
April 4, 2012
If you don't have clubroot, be sure any used or demo’d equipment you buy is clean before you bring it home. Clean equipment before it leaves the auction site or the farm it comes from. Also check that the transport truck is clean. As a precaution, you may want to pressure wash the equipment again when it gets to your…
August 10, 2011
Growers are encouraged to examine strange disease patterns to see if clubroot has arrived on their farms…
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