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Tag Archives weed control

Residual herbicide and crop injury
Columns, Crops

Residual herbicide and crop injury

When the worst happens: what questions to ask and how to soil test for a bioassay

By
Your cereal, oil seed or legume crop clearly shows that it has been significantly damaged by herbicide application or residual herbicide that was applied to cropland one or more years previously. You are considering possible legal action. What do you do next? First of all, you just don’t take a few photographs, complain about significantly […] Read more
The kochia plant here being pollinated by this bee could well be resistant to glyphosate.
Crops, News

Get back to basics to fight kochia

Using multiple and rotating modes of action can reduce selection pressure

By
In recent years, kochia has become a real issue across the Prairies. Kochia loves hot, dry weather, and as a prolific seed producer, the tumbleweed-shaped weed can spread quickly. What’s worse, kochia has a growing history of resistance, which can make it a tricky weed to manage. Agriculture and Agri-Food Canada research scientist Charles Geddes […] Read more
Tractor spraying soybean field
Columns, Crops

Avoiding herbicide mis-use

Herbicides have made it easier to feed the world, but beware of residuals and improper use

By
Herbicides are an integral and essential aspect of modern productive farming. Without our effective and efficient herbicides our dollar costs for food production would be double or triple what we now pay. Can your even visualize hand weeding agricultural and horticultural crops? As a youth I earned pocket money hand hoeing turnips and beets and […] Read more
Using standard rotary mower blades, the Weed Clipper can cut taller weeds above the crop canopy.
Machinery

Introducing the Weed Clipper

Bourgault Tillage Tools debuts a new weed control option

By
One of the newest implements to hit the market in Canada this year, the Weed Clipper (video), came from Bourgault Tillage Tools, and it was on display in the Innovations Show Place at Canada’s Farm Progress in Regina in June. Designed to cut fast growing weeds that are taller than the crop, the Weed Clipper gives […] Read more
The relatively dry spring and hot dry summer were extremely favourable to kochia in Western Canada.
Crops, Features

Herbicide diversity tackles kochia

As the weed works hard to outmanoeuvre chemicals, farmers expand the toolbox

By
Joe Wurz takes kochia control seriously. The southern Alberta farmer at the Lathom Hutterite Colony takes all weeds seriously, but a few years ago when he observed some healthy-looking kochia plants standing in a patch of dead kochia on farm fields near Brooks — all had been sprayed with glyphosate — he suspected herbicide tolerance […] Read more
Bernie McClean's annual crop rotation includes canola, CPS wheat, malt barley and oats.
Crops, Features

Extending rotations, in the field

Part 1 of 3: How real farmers are extending their rotations

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There seems to be no shortage of articles, presentations and research exhorting farmers to lengthen rotations. Longer rotations benefit everything from weed control to disease suppression in crops. But what are farmers doing to maintain or extend rotations? Grainews spoke to three farmers to find out how they’re managing their rotations. And while each farmer […] Read more
Herbicide resistance continues to grow on the Prairies, but so will the list of management techniques to keep weeds such as wild oats at bay.
Columns, Crops

Reporter’s Notebook: How will we be farming in 20 years?

Lisa Guenther points to two agronomic problems shaping our future cropping plans

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Agriculture has undergone big changes in the last century. Yesterday’s farmers would be amazed by the technology contained in a tractor and seeder these days, or by the vaccines that protect livestock from disease. Or even by the phones we tuck into our back pockets, and occasionally drop in the muck. It’s an interesting exercise […] Read more
Fall quackgrass growth.
Crops, Wheat & Chaff

Pre- and post-harvest weed control

Q & A with CPS

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Q: When should I start weed control for my crop? A: A weed-free crop at harvest represents the cumulative effort of field management during the season. To manage many weed species, the season begins the previous fall. Pre-harvest weed control tends to focus glyphosate application on perennial weeds such as quackgrass or Canada thistle. At […] Read more
Edge herbicide approved for use with hemp
Crops, Features

Edge herbicide approved for use with hemp

Established chemistry increases weed control options in specialty crop

By
Will Van Roessel may be reducing hemp acres on his southern Alberta farm this year, reflecting market signals over increasing world production, but he will be using Edge herbicide to help control pre-emergent weeds. Van Roessel who along with family members operates Specialty Seeds near Bow Island, just west of Medicine Hat, says Edge is […] Read more
Weed specialist Clark Brenzil says that ideally wild buckwheat should be controlled at the four-leaf stage or smaller.
Crops, Features

Wild buckwheat: A weed to watch

Glyphosate alone is just not enough. 
Why is buckwheat so hard to control?

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Wild buckwheat consistently ranks among the top five problematic weeds in Saskatchewan weed surveys. Clark Brenzil, provincial weed control specialist at Saskatchewan’s Ministry of Agriculture, explains what makes this weed so tricky. Wild buckwheat is an annual weed found in cropland in the southern Prairies. Despite farmers’ best efforts, the weed is hardy and persistent […] Read more

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