Weeds

  • Fall herbicide: Frost, volunteer canola, cleavers and more

    Weeds

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  • Weeds: Late September, early October for perennials

    Weeds

    Perennials such as thistles and dandelions are best controlled from mid-September to early October. Waiting at least a month after cutting will increase the target leaf area, but later dates increase the risk of losing healthy leaf tissue to frost. Without healthy leaf tissue, the herbicide can’t get translocation to the weed’s crown and storage roots where the killing can occur.

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  • What is the best time for fall weed control?

    Weeds

    Fall is a good time to control perennial and winter annual weeds, but spraying immediately after harvest may not provide the best results.

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  • 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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