Growers don’t have much time left to control weeds in fields planned for canola next year. But if you saw higher numbers of key canola weeds, such as cleavers, in your cereal crops this year, make a plan now to control them…
Weeds
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Post harvest weed control can be a valuable step in preparing fields for canola next year, especially if winter annuals and perennials are present in high numbers. Dandelions and thistles, for example, move a lot of energy into their roots this time of year, so fall is an effective time to control these weeds. Here are some tips to improve…
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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…
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Volunteer canola in the field at this point is a weed that could dramatically impact your canola crops in the future. It may be infected with blackleg or sclerotinia, adding additional inoculum to the field to infect subsequent crops. And it could potentially add thousands of viable seeds and resulting plants that you will need to control in the future…
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Growers can significantly reduce their volunteer canola seedbank by reducing losses at harvest. Canola losses at harvest can be up to 5 bushels per acre, which is 50 times the typical seeding rate. The Combine Clinic July 18 and 19 (pick one day) in Westlock, Alta., will explain how to reduce harvest losses, putting more yield in the combine tank…
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Volunteer canola that is done flowering will have already produced a large amount of viable seed. Unfortunately, controlling plants at this stage of growth will do little to reduce the viability of those seeds…
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Herbicide labels say that glyphosate and Odyssey cannot be applied to canola after the 6-leaf stage and Liberty cannot be applied after early bolting. These limits are in place to ensure effective product performance and crop safety. Later applications can lead to reduced weed control due to advanced weed staging and reduced herbicide contact with the weeds through the increased…
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Label application windows: Glyphosate: Anytime up to and including the 6-leaf stage of canola. Liberty: Cotyledon stage up to the early bolting stage of canola. Odyssey/Absolute: 2- to 6-leaf stage of canola…