Weeds

  • Second herbicide application: A scenario

    Weeds

    A Canola Watch reader sent us this question: I have wild buckwheat at the 3- to 4-leaf stage that somehow got missed with the first application of Liberty 10 days ago . It’s moderate in severity. Will it cause me grief at swath timing? And or will it have any effect on yield? Crop stage is 6-leaf or so.

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  • Late herbicide: Is it worth it?

    Weeds

    Wind and wet pushed back a lot of weed management and some fields are still not sprayed. In this situation, intense weed pressure can reduce yields by 20%, 30%, 50%… That’s why early weed control has a huge positive effect on profitability, but late control is better than nothing. Late control can stop the yield loss, stop weeds from contributing substantially to the weed seed bank, and improve crop harvestability.

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  • Is a second herbicide application necessary?

    Weeds

    A second in-crop spray only makes sense if…

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  • Herbicide Qs on tank mixing, ideal weather, spray patterns and more

    Weeds

    Here are some agronomy-related questions that dig a little deeper into herbicide performance in canola….

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  • Cleavers: In-crop control

    Weeds

    For in-crop management of cleavers in canola, both glyphosate and glufosinate work best on smaller spring-germinating plants. Early herbicide application is also best for crop yield. Use a rate and water volume suitable for cleavers.

    Find details in the provincial crop protection guides: crop protection for your province: Alberta Saskatchewan Manitoba

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  • Early weeds: Scout then spray

    Weeds

    The Canola Council of Canada agronomy team looked at this photo above and discussed whether the field should be sprayed now or in a few days after more weeds have emerged. Consensus was that the field could have been sprayed a few days earlier. Angela Brackenreed, who scouted the field, says the weeds just became visible in the past three days, so the crop is actually well ahead of them. She confirmed that the grower plans to spray today as long as conditions allow.

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  • Weed control strategies for each HT system

    Weeds

    Weeds are coming up strong. As part of the Canola Council of Canada’s Keep It Clean campaign, we remind growers to use only registered pesticides when required. Refer to product labels for proper use instructions, including rates and application windows. Here are strategies to improve weed control results for each HT system: Clearfield Group 2 […]

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  • Avoid spray tank contamination – tips

    Weeds

    Tank mixes used for pre-seed burnoff ahead of cereals often contain Group 2 and Group 14 products that can hang up in sprayer plumbing. These residues can be particularly damaging to canola.

    Common canola-crop herbicides and surfactants left in a tank for any extended period of time are very good at removing these residue deposits from tank walls and sprayer plumbing, causing them to mix in with the spray solution. If wind or rain delays spraying, the concentration of scrubbed-free herbicide residue in the tank can continue to increase.

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  • Strive for early weed control

    Weeds

    Early weeds have large impact on canola yield potential. Research has shown a yield advantage of 3 bu./ac. when weeds are removed at the 1- to 2-leaf stage of canola instead of waiting until the 3- to 4-leaf stage. That advantage rises to 7 bu./ac. when comparing weed control at the 1- to 2-leaf stage versus the 6- to 7-leaf stage.

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  • At the ready: Tips to avoid delays when seeding, spraying resumes

    Weeds

    Weather delays for seeding and spraying make it all the more important to have equipment ready to go and running smoothly when productive moments come along. Here are a few preparations to consider for the drill and sprayer.

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