Even if seeding is two or three weeks away, a pre-seed burnoff now could keep these weeds from getting too big to control. We have reports of gigantic winter annuals in fields where they haven’t been sprayed…
Pre-seed burnoff
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A farmer is seeding Roundup Ready canola and the field has a lot of winter wheat volunteers and some perennials. Is the farmer better to seed or spray first? Answer: In this situation, with Roundup Ready canola being able to take a glyphosate application at any time up to the 6-leaf stage, the farmer may want to take advantage of…
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Volunteer canola is a weed and competes with the crop for nutrients and water and sunlight. Volunteers in a canola crop do not make a positive contribution to yield. Growers also have other reasons to get rid of them: Volunteers do not have seed treatment, so they can introduce seedling diseases and increase flea beetle pressure. Also, volunteers in non… -
If choosing to seed before spraying, weeds present will have a minimum five days — usually more — before the crop emerges. These weeds can advance very quickly in good conditions, which is why growers who seed before spraying may choose to apply in the narrow post-seeding pre-emergence window…
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Early weed control is preferred because nutrient and moisture taken up by weeds means less for the crop. Weeds emerging before the crop also compete for sunlight, which is an issue if those weeds canopy over the crop. Ideally, growers want crop emerging in a clean field so it can get ahead of the weed competition. That is why pre-seed… -
Growers will be eager to seed with the return of warm weather but early weed control also remains a priority — especially for fields that have not received any yet. Spraying those fields now and seeding three days later will have an economic benefit given that weed competition remains a major factor in crop yield potential… -
Seeding is the priority for many growers this week, but fields that still have lots of big winter annual weeds should get a pre-seed burnoff with a high rate of glyphosate before seeding… -
If choosing to seed before spraying, weeds present will have a minimum five days — usually more — before the crop emerges. These weeds can advance very quickly in good conditions, which is why growers who seed before spraying may choose to apply in the narrow post-seeding pre-emergence window… -
Products approved for use ahead of canola are: –glyphosate –bromoxynil in a tank mix with glyphosate –Aim (carfentrazone) in a tank mix with glyphosate –CleanStart (carfentrazone and glyphosate) –clomazone in a tank mix with glyphosate –Conquer (bromoxynil and carfentrazone) in a tank mix with glyphosate…
