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Tag Archives Weeds

Producers are being urged to diversify their soybean stands.
Crops

Seeding one soybean variety a ‘mistake’

Ontario soy expert says growers should diversify to at least three varieties

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Glacier FarmMedia – Horst Bohner is convinced that farmers should plant more than one variety of soybeans. If they don’t, they are making a “mistake.” “As a basic starting point, I think every grower should seed at least three varieties. Every year. As a minimum. Hopefully more than that,” said Bohner, a soybean specialist for
Dirk Vandenhirtz, CEO and founder, left, and Darrell Bailey, North American business development lead with Crop.zone. Photo: John Greig

Agritechnica update: Give a big shock to weeds

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Farmers are being pushed to find an alternative to desiccants to burn down crops, as companies are increasingly leery of herbicides approved close to harvest. People have been shocking weeds with electricity for 100 years, but the return on the electricity invested and the technology required to do so safely haven’t always worked. Crop.zone is
Kochia is among the weeds that should be on farmers’ radar this fall.
Crops

Early harvest opens options for fall weed control

Spraying tips to use once the combine is parked

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[UPDATED: Oct. 11, 2023] An early harvest gives farmers the opportunity to get ahead of weeds for next season, says Manitoba Agriculture weed specialist Kim Brown. Weeds have had ample time to grow after harvest, making them prime targets for herbicide. Why it matters: As harvest winds down, attention turns to field preparation for 2024.
File photo of palmer amaranth — the taller yellowish plants — infesting a U.S. cotton field. (Photo courtesy ARS/USDA)
Crops

Palmer amaranth pops back up in Ontario

Weed infamous in U.S. for multiple herbicide resistances

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A single plant that showed up this summer on the edge of a southwestern Ontario cornfield is cause for concern among Canadian farmers, weed specialists warn. Writing Monday in the ag ministry’s Field Crop News, Ontario provincial weed management specialist Mike Cowbrough said the plant in question, found in Wellington County, is confirmed as palmer
Waterhemp peeks out among soybeans.
Crops

Waterhemp on the rise

Manitoba’s list of affected municipalities keeps growing

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Manitoba’s ag sector is trying to hold the line against big yield-killing threats like waterhemp and Palmer amaranth. Unfortunately, the number of municipalities where waterhemp has been found just grew by two. “Waterhemp and Palmer amaranth are Tier 1 weeds regulated under the Noxious Weeds Act. They must be destroyed when they’re found,” said Manitoba Agriculture weed extension specialist Kim
Neale Heinrich stands in front of the Redekop Seed Control Unit at its booth at Ag in Motion on July 18, 2023. (Braedyn Wozniak photo)
Crops

At Ag in Motion: Herbicide resistance fight needs integrated seed management

'Those seedlings we don’t manage to kill (are) probably the most herbicide-resistant'

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Harvest weed-seed control takes aim at reducing herbicide-resistant weeds that western Canadian farmers find more and more every year. At the Ag in Motion outdoor farm show this week, field residue management manufacturer Redekop won the Innovations Award for Environmental Sustainability for its harvest Seed Control Unit, which destroys more than 95 per cent of
Originally a tow-behind unit that attached to the back of the combine, the newer iteration of the Harrington Seed Destructor is a mill that can be integrated with the combine. (Photo: deBruin Engineering Pty Ltd.)
Crops

At Ag in Motion: Harvest weed control still in the mix

'You’re not going to spray your way out of this'

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It’s a relatively new solution to the age-old problem of trying to get rid of weeds without broadcasting the seed or using increasingly less effective herbicides — mechanical separation and pulverization of weed seed. Harvest weed seed control might not be a golden bullet to tackle glyphosate-, fluroxypyr- and dicamba-resistant weeds, but according to Agriculture
“Monarchs as a species are not about to go extinct, but the fascinating long-distance migration of monarchs from Manitoba and other parts of central and eastern North America is under threat.” – Jeffrey Marcus, University of Manitoba.
News

The tricky question of milkweed and monarchs

Milkweed species, the sole food source for the larvae of monarch butterflies, are reappearing in Manitoba farm fields, leading to a conservation balancing act

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The reappearance of milkweed in crops across the province is giving farmers a tough choice between weed control and conservation. In Canada, there are 14 species of native milkweed that are the sole food group for monarch butterflies. Two of those species are listed on Manitoba Agriculture’s noxious weed list: common milkweed and showy milkweed.
Quick adapting and designed to spread, kochia seems biologically primed to pick off the punches farmers throw at it.
Crops, News

On the ropes against kochia

Growers face a formidable foe. Fast mutations and efficient seed spread are a tough one-two combination

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Kill it with fire. That was the gist in 2018, after a photo of post-spray kochia in Saskatchewan made the rounds on social media. The image showed a swath of dead, brown plants. That made the single, green plant right in the centre stand out even more. There was a collective recoil from farmers in
Field patches where kochia is dominant are candidates for mowing or, in the case of herbicide resistant plants, hand-weeding before it sets seed.
Crops

Strike early when fighting kochia in canola

Kochia has few means of control, so know the options

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Glacier FarmMedia – Kochia is one of the fastest-spreading and most resistant weeds common in canola. The key is to control it before it sets seed, experts say, and that means striking when it’s small. Herbicide resistant kochia has been a management headache for growers across the Prairies. Pre-seed burnoff is the first tool in

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