Home / Canola Watch / Weeds / Page 21
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Rain and delayed harvest have caused some cut canola plants to regrow. This regrowth coming up through swaths can make for increased green matter going through the combine. This regrowth cannot be sprayed…
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The first step in canola volunteer management is to do nothing. Leaving seeds undisturbed so they germinate in the fall or get eaten by birds and insects is a good way to reduce the volunteer seedbank. Canola seeds that remain on the soil surface when the snow flies will deteriorate over the winter…
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Fall is a good time to control perennial and winter annual weeds. The message this week includes two reminders: 1. Wait for post-harvest regrowth. 2. Know the best timing for the weeds present…
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Weed management includes a keen eye for the unusual. “Unusual” can be suspicious patches of common weeds (herbicide resistance?) and presence of new unknown weeds. Jimsonweed is, for many, an usual and unknown weed. (Shown above.) It was reported in several Alberta canola fields a couple weeks ago, and has now been confirmed in fields in 11 Alberta municipalities…
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Verticillium wilt was found in a canola field in Manitoba in 2014, and a survey of approximately 1,000 fields across Canada is underway this summer and fall…
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While swathing or straight combining, keep an eye out for weed escapes. Unless they are an obvious sprayer miss or are weeds not well controlled under the herbicides used on the field, they could be herbicide resistant weed patches…
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(1) When spraying and prior to swathing or straight combining, stick to the pre-harvest interval (PHI) unique to each product. (2) Remember that canola buyers will be asking producers to declare if they have used quinclorac this year. (3) When prepping bins, follow canola storage recommendations…
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Growers considering a pre-harvest glyphosate cannot apply it to canola (RR or non-RR) until seed moisture drops to 30% or lower. This roughly coincides with 30% seed colour change. Spraying earlier raises the potential for glyphosate residue in seed. Pre-harvest glyphosate will kill green weeds and even out the non-RR canola for straight combining. Group-14 Heat can now be used…
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When it comes to maintaining Canada’s reputation as a high quality canola supplier, everyone in the canola value chain has an important role to play…