Applications made when cool cloudy days follow cool nights will result in lower herbicide efficacy than applications made in warm sunny days. Cloudy days don’t provide the photosynthetic activity required for many herbicides, including Group 10 glufosinate. And nights near freezing followed by days with highs that barely reach 10 C will not provide high metabolic activity required for best…
Weeds
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Past research has demonstrated an advantage of 3 bu./ac. for controlling weeds at the 1-2 leaf stage of canola versus the 3-4 leaf stage, and a 7 bu./ac. advantage versus 6-7 leaf. At $12 per bushel, that’s $36 to $84 per acre more profit with no added cost. These numbers will be even higher if a preseed burnoff was not…
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Canola benefits from both early seeding and early weed control. The solution: Work through seeding and spraying operations simultaneously. Have the seeder working when it can. Meanwhile walk fields to get an indication of weed pressure. Fields with large numbers of winter annual and perennial weeds should get a pre-seed burnoff. While spraying that field and waiting 3 days to…
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Read more for answers to these questions: —Should we really be concerned about glyphosate resistance? We've been managing weed resistance in other Groups and we have lots of tools now. —What weeds should I look out for that may not be on our radar? —What rate is too high or too low when trying to prevent resistance issues? —How long…
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A pre-seed burnoff will result in higher yields versus no pre-seed burnoff. Seeding can begin fairly soon after a burnoff. For annuals and winter annuals, glyphosate needs only 24 hours to get to the growing point. After a day, the crop can be seeded. For perennial weeds, 3 days should be enough in sunny and warm conditions but 5 days…
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Hit these volunteer canola plants when they're small with a pre-seed burnoff. Volunteer canola is a weed and competes with the crop for nutrients and water and sunlight. Volunteers do not have seed treatment, so they can introduce seedling diseases and increase flea beetle pressure. Also, volunteers in non canola years provide a host for blackleg, clubroot and insects, reducing…
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Nufarm provides the following tips for CleanStart ahead of canola…