Weeds

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “What weeds will you be dealing with next year?”
October 5, 2011

What weeds will you be dealing with next year?

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
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Featured image for “Don’t spray weeds right after frost”
September 21, 2011

Don’t spray weeds right after frost

Post harvest weed control can be a valuable step in preparing fields for canola next year, especially if winter annuals and perennials are present
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Featured image for “Apply pre-harvest glyphosate only after seed moisture drops below 30%”
August 10, 2011

Apply pre-harvest glyphosate only after seed moisture drops below 30%

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
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Featured image for “Pay attention to pre-harvest intervals”
August 4, 2011

Pay attention to pre-harvest intervals

The pre-harvest interval is the number of days that must pass between the last application of a pesticide and cutting of the crop. Cutting
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Featured image for “How to destroy volunteer canola stands”
July 21, 2011

How to destroy volunteer canola stands

Volunteer canola in the field at this point is a weed that could dramatically impact your canola crops in the future. It may be
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Featured image for “Help for volunteer canola management”
July 13, 2011

Help for volunteer canola management

Growers can significantly reduce their volunteer canola seedbank by reducing losses at harvest. Canola losses at harvest can be up to 5 bushels per
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Featured image for “Volunteer canola control in an unseeded field”
July 7, 2011

Volunteer canola control in an unseeded field

Volunteer canola that is done flowering will have already produced a large amount of viable seed. Unfortunately, controlling plants at this stage of growth
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Featured image for “What is the goal with a late herbicide spray?”
June 29, 2011

What is the goal with a late herbicide spray?

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.
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Featured image for “Weed control window closing”
June 22, 2011

Weed control window closing

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
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Featured image for “Water stress reduces herbicide tolerance and nutrient uptake”
June 22, 2011

Water stress reduces herbicide tolerance and nutrient uptake

Water stress can make canola more susceptible to herbicide damage. Damage can be enough to kill plants under extreme stress. Resist the temptation to
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Featured image for “Control cleavers, volunteer canola in cereals”
June 22, 2011

Control cleavers, volunteer canola in cereals

Cereal crops in rotation provide canola growers will another opportunity to control cleavers, volunteer canola and other tough weeds to reduce the threat to
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Featured image for “Cleaning out the sprayer tank — tips”
June 17, 2011

Cleaning out the sprayer tank — tips

Cleaning out the sprayer protects a sensitive crop, it protects people working with the sprayer, and it protects the sprayer and its components. The
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