In-crop

  • Watch for suspicious weed patches (kochia angle)

    In-crop

    With herbicide applications winding down, this is a good time to scan fields for suspicious weeds that escaped the management effort. The photo from Tammy Jones shows glyphosate-resistant kochia.

    READ MORE

  • Late herbicide: Is it worth it?

    In-crop

    Too windy. Too wet. Sometimes both. This 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.

    READ MORE

  • Is a second in-crop herbicide application necessary?

    In-crop

    A second application of in-crop herbicide is not always economical if the crop is well established, competitive and ahead of the remaining weed population. A second in-crop spray only makes sense if…

    READ MORE

  • Spray early: Economics of early weed control

    In-crop

    One of our Alberta agronomy specialists encountered the situation in the photo. Canola emergence was patchy in this small area, but generally good overall. The bigger issue was the big population of tiny weeds. The agronomy specialist wondered if these buckwheat seedlings, though very abundant, were too small to spray? The answer is no.

    READ MORE

  • In-crop herbicide timing – scenarios

    In-crop

    In general, early weed control is best. A few early weeds emerging before or at the same time as canola plants are much more damaging to yield than lots of weeds emerging after canola plants are established. Those early-emerging weeds tie up nutrients and moisture valuable to the crop and can also out-compete the crop […]

    READ MORE

  • Second herbicide application: A scenario

    In-crop

    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.

    READ MORE

  • Late herbicide: Is it worth it?

    In-crop

    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.

    READ MORE

  • Is a second herbicide application necessary?

    In-crop

    A second in-crop spray only makes sense if…

    READ MORE

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

    In-crop

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

    READ MORE

  • Cleavers: In-crop control

    In-crop

    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

    READ MORE

Canola Watch