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When canola is at multiple stages within one field and when weeds are at multiple stages, it can be a challenge to choose the right spray timing. The key is to assess the stage that represents the majority of canola plants…
Weeds
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Please visit the Canola Encyclopedia for more information on herbicide carryover risk factors and symptoms…
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Step one with a thin stand is to determine the cause so it can be prevented next year. Step two is to scout closely and take extra care to protect those few plants from insect damage and weed competition… -
Timely spray is more important than nozzle choice. AAFC research showed that spraying 7 days after crop emergence generated higher yields than spraying 17 days after emergence, no matter the droplet size. Using a low drift nozzle early was better than waiting longer for a relatively calm day to use a finer spray. Read the whole article for more tips…
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Weeds are getting out of control on some unseeded and seeded fields too wet for the ground sprayer. This is especially true on fields that didn’t get a pre-seed burnoff. Aerial spraying may be the best option even at this early stage of the crop. This article has options for aerial herbicide application in canola…
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Small and vulnerable canola plants face many threats during their first three weeks. The crop may need your protection to get through these stages with its top-end yield potential intact. Canola growers are encouraged to walk their fields a couple times a week — or more — until plants are firmly established and growing strong…
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If wild oats are the one problem weed in a Liberty Link canola field, one option is to apply a grassy weed product (Centurion or Select) alone while waiting for emergence of other weeds prior to the Liberty application. But walk the field and take a close look at the weed spectrum before making this decision to ensure that delaying…
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In cool cloudy conditions, weed growth is slower and herbicide efficacy may be lower. Cool humid conditions are also prime conditions for herbicide injury to the crop. The leaf cuticle (waxy layer) is thinner allowing more rapid uptake of herbicide into the plant and cool conditions reduce the speed at which the herbicide is inactivated in the crop. This can…
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Early weed control is the most economical. It reduces weed competition for nutrients and moisture, and improves yield potential for canola. In-crop weed control should occur as early as possible. The following article provides application windows for Clearfield, Roundup Ready and Liberty Link matching herbicides…
