Volunteer canola

  • Pre-seed volunteer canola control: Before canola, before other crops

    Volunteer canola

    Volunteer canola is a weed and competes with the crop for nutrients and water and sunlight. Volunteers in a canola crop do not make a positive contribution to yield. Growers also have other reasons to get rid of them: Volunteers do not have seed treatment, so they can introduce seedling diseases and increase flea beetle pressure. Also, volunteers in non canola years provide a host for blackleg, clubroot and insects, reducing the effectiveness of crop rotation for managing these issues.

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  • Can’t spray canola regrowing under swaths

    Volunteer canola

    Regrowth in swaths cannot be sprayed. Credit: Justine Cornelsen

    Rain and delayed harvest have caused some cut canola plants to regrow. This regrowth coming up through swaths can make for increased green matter going through the combine. This regrowth cannot be sprayed.

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  • Fall management to reduce canola volunteers

    Volunteer canola

    Volunteer_canola

    The first step in canola volunteer management is to do nothing. Leaving seeds undisturbed so they germinate in the fall or get eaten by birds and insects is a good way to reduce the volunteer seedbank. Canola seeds that remain on the soil surface when the snow flies will deteriorate over the winter.

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  • Volunteer canola control

    Volunteer canola

    Volunteer canola. Best to hit them with a pre-seed burnoff with Cleanstart, Amitrol 240 or (if non RR) glyphosate.

    Hit these volunteer canola plants when they’re small with a pre-seed burnoff. Volunteer canola is a weed and competes with the crop for nutrients and water and sunlight. Volunteers do not have seed treatment, so they can introduce seedling diseases and increase flea beetle pressure. Also, volunteers in non canola years provide a host for blackleg, clubroot and insects, reducing the effectiveness of crop rotation for managing these issues.

    READ MORE

Canola Watch