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We answer questions on weed, harvest and fertilizer management. We also have links to help with canola hybrid selection for 2022…
Topics for the week
September 22, 2021
Fall control
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Fall weed control – Timing and targets
September 23, 2020
Fall is a good time to control perennial and winter annual weeds, but spraying immediately after harvest may not provide the best results. Before spraying, identify the weeds present. Are they perennials? Winter annuals? Annuals? Clubroot hosts?…
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Fall weeds: Snow and frost and timing
October 2, 2019
The snow layer is likely to insulate the weed leaf material from the colder conditions that follow it. That could mean you’re back spraying earlier than you would be with frost alone…
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Do you need to spray germinating volunteers?
September 18, 2019
The general advice is to leave them. As annuals, frost and winter will kill off most of them, and any money spent trying to control these volunteers would be wasted. Possible exceptions that may change your approach…
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Give weeds time to re-grow before spraying
September 12, 2018
Fall is a good time to control perennial and winter annual weeds, but spraying immediately after harvest may not provide the best results. Before spraying, identify the weeds present. Are they perennials? Winter annuals? Annuals? Clubroot hosts?…
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Dry soils: Fall management considerations
September 12, 2018
Dry conditions throughout the summer and heading into winter could have ramifications for field management decisions this fall and rotation planning for next year…
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Fall herbicide: Frost, volunteer canola, cleavers and more
October 4, 2017
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Weeds: Late September, early October for perennials
September 27, 2017
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…
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What is the best time for fall weed control?
September 20, 2017
Fall is a good time to control perennial and winter annual weeds, but spraying immediately after harvest may not provide the best results…