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Tag Archives Glyphosate

Herbicide-resistant black-grass is costing English farmers $55 to $100 an acre in herbicide costs and if Canadian farmers aren’t careful they can expect similar problems with herbicide-resistant grass weeds, Gowan’s John Edmonds warned herbicide sellers last week.  photo: john edmonds, Gowan
Crops

Old chemistry conscripted in battle with herbicide-resistant weeds

It’s an expensive fight in Europe that farmers here can expect to have if they don’t adjust first

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Avadex and Fortress are old soil-applied, pre-emergence herbicides with a new purpose — helping delay the onset of herbicide-resistant weeds. And fall is the right time to apply both, herbicide retailers were told at a meeting here Sept. 22 held by Gowan Canada. Manitoba already has some herbicide-resistant weeds, including glyphosate- and Group 2-resistant kochia
Opinion

Editorial: the ‘wicked problem’ of herbicide-resistant weeds

It's not only a problem of chemistry, but human behaviour itself

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When I first tuned into a recent summit on herbicide resistance being broadcast live by webinar from Washington, D.C., my first thought was that I had virtually stumbled into the wrong conference. The keynote speaker wasn’t a weed scientist. He is a sociologist. But as I listened, it became clear this speaker, and the ones
VIDEO: Glyphosate resistance on Manitoba fields
Crops

VIDEO: Glyphosate resistance on Manitoba fields

At least one local farmer has resorted to removing kochia by hand

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Glyphosate is arguably the world’s most important herbicide, but glyphosate resistant weeds are on the rise. Two Manitoba fields have glyphosate and group 2 resistant kochia. To delay glyphosate resistance farmers should reduce glyphosate use when possible. That’s the message Manitoba Agriculture, Food and Rural Development weed specialist Nasir Shaikh gave farmers Aug. 7 during the Manitoba
Editorial: The third option
Forages, Opinion

Editorial: The third option

Trials have shown adding a perennial forage to your crop rotation can be effective weed control

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At a time when soil erosion is recognized as one of the biggest threats to the world’s ability to continue feeding itself, it’s disturbing to see weed scientists advising tillage to address invading “superweeds.” There is no question that addressing the lengthening list of weeds that have developed resistance to glyphosate must be a top
A soybean plant in the unifoliate stage.
Crops, Oilseeds

Soybean stages for weed control

It’s important to get an early jump on the weeds before they rob soybeans of their potential yield

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Early weed control is essential to protect Roundup Ready soybean yields, says Dennis Lange, a farm production manager with Manitoba Agriculture, Food and Rural Development (MAFRD) in Altona. Glyphosate can be safely applied when soybeans are in the first trifoliate stage right up to flowering. Most farmers split their applications, first hitting weeds when they
weed in a field
Crops

Tips for herbicide weed control when it’s cool and wet

When weeds are growing slowly they absorb less herbicide, while stressed crops are more susceptible to injury

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Cool, wet weather, especially in southwestern Manitoba, has delayed seeding and now it’s complicating weed control. Muddy soils have delayed, or prevented farmers from doing a pre-plant weed burn-off allowing weeds to get bigger than the optimum stage for herbicide control. Lionel Kaskiw, a farm production adviser with Manitoba Agriculture, Food and Rural Development (MAFRD)
Crops, Oilseeds

Authority herbicides now registered for soybeans in Western Canada

When tank mixed with glyphosate soybean growers can get 
immediate and residual weed control and delay 
glyphosate-resistant weeds

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Authority herbicides are now registered for conventional and Roundup Ready soybeans, giving Manitoba farmers the option for residual weed control and another tool to delay the onset of glyphosate-tolerant weeds, including kochia. Authority (sulfentrazone) can be tank mixed with glyphosate and applied pre-plant surface or pre-emergent surface to control kochia, lamb’s quarters, red root pigweed
Tips for when soybean seeding runs late
Crops, Oilseeds

Tips for when soybean seeding runs late

Consider boosting your seeding rate to help offset the negative effects of delayed seeding

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When seeding soybeans later in the season farmers should consider increasing their seeding rate to bolster yields, a Manitoba Pulse Growers Association production specialist says. Kristen Podolsky said in an interview getting canopy closure by the first week of July is key to getting good soybean yields. “Soybean flowering is triggered by day length. As
foxtail barley
Cereals, Crops, News

Get on controlling foxtail barley early

The weed is becoming more prevalent in the southwest

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Foxtail barley is getting worse in southwest Manitoba and it’s best controlled before seeding, says Lionel Kaskiw, Manitoba Agriculture, Food and Rural Development’s farm production specialist in Souris. “It seems to be a weed that has taken over since 2011 in some fields and producers are having some issues on how to control it,” Kaskiw
Kochia seedling
Crops

Manitoba’s first glyphosate-resistant weed confirmed

The good news is, the weed was found at only two sites out of 283 surveyed last fall

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Manitoba has its first official glyphosate-resistant weed, and as expected, it is kochia. But out of 283 fields surveyed last fall, only two were found with glyphosate-resistant kochia. Both are in the Red River Valley. “I was surprised about where it was found,” Bruce Brolley, Manitoba Agriculture, Food and Rural Development’s (MAFRD) crops knowledge centre

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