Home / Canola Watch / Weeds / Page 3
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Weeds that emerge before the crop will out-compete the crop for moisture, nutrients and sunlight. That is why just a small number of weeds – even just a few per square foot – emerging before or with the crop can be much more damaging to yield potential than a larger number of weeds flushing later…
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Ian Epp and Clark Brenzil compare pre-seed burnoff and early post-emergence applications, and make a good case for spraying first and then seeding…
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Clean lines, nozzles and screens to prepare the sprayer for a busy few weeks of early weed control…
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Recent wet and dry cycles have increased topsoil salinity in many parts of the Prairies over the past few years. “Salinity is not a salt problem, it’s a water problem,” says Marla Riekman, soil management specialist with Manitoba Agriculture and Resource Development. “Wet years bring the water table closer to the roots, and salinity wicks up to the soil surface.”…
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Simple but effective... Tank mixes are recommended to control canola volunteers and glyphosate-resistant kochia, and to protect the long-term viability of glyphosate…
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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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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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These weed patch cut-arounds are easy to do when straight combining. The key is to destroy those patches with a mower or cultivator before they set seed…
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If you have a canola field with a lot of perennial weed escapes, especially Canada thistle, are you better to spray them pre-harvest or post-harvest for maximum efficacy? There are benefits to both options…
