Weeds

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “Elevated risk for herbicide carryover”
April 4, 2013

Elevated risk for herbicide carryover

A dry summer and fall in certain areas of the Prairies created a high risk situation for herbicide carryover this spring. High spring moisture
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Featured image for “Glyphosate resistant kochia on the move”
April 4, 2013

Glyphosate resistant kochia on the move

Both of these trays were seeded with kochia and then sprayed with glyphosate after emergence. The difference: The tray in front was seeded with
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Featured image for “CanoLAB highlights”
March 6, 2013

CanoLAB highlights

Read more for a great video showing tiny wasp larvae devouring an alfalfa looper from the inside out, for a pop bottle demo (shown
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Featured image for “Burn off canola volunteers ahead of cereals”
March 6, 2013

Burn off canola volunteers ahead of cereals

Cereals offer a wide range of pre-seed herbicide options to get rid of canola volunteers, which may be plentiful this spring after the wind
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Featured image for “Find the right agronomist”
December 5, 2012

Find the right agronomist

Growers who do not have the time for timely scouting may want to hire an agronomist to support their own scouting program. Most agronomists
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Featured image for “Weed control window still open”
October 3, 2012

Weed control window still open

Weed control can still be achieved after a frost if no more than 40% of the original leaf tissue is damaged. Herbicide should be
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Featured image for “Dry soil may increase herbicide carryover”
October 3, 2012

Dry soil may increase herbicide carryover

It has been a very dry two months, as the map shows. Several products with high carryover risk are broken down almost exclusively through
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Featured image for “Tillage for weed control”
October 3, 2012

Tillage for weed control

Dry soils will be difficult to penetrate, and tillage will destroy standing stubble and its snow-catching capability. We can’t predict winter weather, but this
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Featured image for “Fall field work for canola growers”
September 28, 2012

Fall field work for canola growers

A long fall provides a few extra weeks to look back on the year that was — to reassess plant stands, fertilizer rates and
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Featured image for “Spray weeds after a temperature shock”
September 12, 2012

Spray weeds after a temperature shock

Cold temperatures help trigger winter annuals, such as cleavers (shown), and perennials to start moving food reserves down into below ground tissues, so waiting
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Featured image for “Pre-harvest glyphosate needs time to work”
August 22, 2012

Pre-harvest glyphosate needs time to work

Glyphosate is registered for pre-harvest perennial weed control in canola. Glyphosate is to be applied when the majority of seeds are yellow to brown
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Featured image for “Second weed spray may not pay”
June 27, 2012

Second weed spray may not pay

Growers who usually spray twice may not need to spray a second time this year if the canopy has closed, weeds are behind the
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