GFM Network News

Four steps to blackleg management in canola


A long-term plan

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Photo: Jennifer Paige

Justine Cornelsen, agronomy specialist with the Canola Council of Canada, says long-term effective blackleg management is a “whole package deal” that uses these four steps.

Related: Homegrown canola breeder sees opportunities, challenges

1. Scout

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Photo: Canola Council of Canada

Scout for blackleg and know what you’re looking for. Look for blackleg scouting tips and photos at

Related: Industry explores alternative labels for blackleg resistance

2. Fungicides

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Photo: Lee Hart

If using fungicide for blackleg, it has to go on at the two- to four-leaf stage of the crop and really only works if the variety is susceptible to blackleg.

Related: To spray or not to spray?

3. Varieties

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Photo: iStock

Use R rated varieties and scout to make sure the resistance is still effective.

Related: New canola varieties for 2017

4. Rotation

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Photo: Manitoba Department of Agriculture

Crop rotation will give residue infested with virulent blackleg more time to break-down. When Canada has a gene ID and pathotype ID program in place for variety rotation, this will trump crop rotation.

Related: Preaching canola rotations falls on deaf ears


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