Reading Time: 3 minutes If you’ve found herbicide-tolerant weeds in your field, you’re not in the minority. Weed resistance is increasing worldwide, so it’s really important that Prairie growers understand growing herbicide tolerance, says one of the country’s top resistance experts. “Group 2 really overshadows all the other groups in terms of weed resistance,” said Hugh Beckie, a research […] Read more
Herbicide resistance is everywhere you look
This year it’s Alberta’s turn to be surveyed by Ag Canada — but researchers already know the news won’t be good
Minnesota probes Palmer amaranth’s sudden appearance
Chicago | Reuters — Minnesota has launched an investigation to find the source of seed mixes contaminated with weed seeds after the aggressive, herbicide-resistant Palmer amaranth weed was found on 30 areas planted in a federal conservation program. The weed grows very fast, reaching up to eight feet in height and can hold back commercial […] Read more
This is not good — triple-resistant kochia has entered Alberta
Glyphosate-resistant kochia was bad but there’s a new strain that’s much worse
Reading Time: 3 minutes Kochia, one of Western Canada’s most abundant and economically devastating weed species, has won another major battle in overcoming herbicide. This summer, the first known Group 4 herbicide-resistant kochia was identified in a durum wheat field in southwestern Saskatchewan. And samples currently being tested from a farm in southern Alberta are also suspected to be […] Read more
EPA approves Monsanto’s dicamba weed killer
U.S. seeds and agrochemicals maker Monsanto Co. has secured approval from the U.S. Environmental Protection Agency for a new dicamba-based weed killer designed for its next generation biotech soy and cotton varieties, the company said on Wednesday. While approval had been expected, it is seen as a major step forward for the company’s newest herbicide […] Read more
Four steps to managing herbicides
Cutting herbicide resistance risks comes down to managing herbicides, in part. Here are four tips for doing that better, courtesy of Kate Sanford Mitchell, who manages Bayer CropScience’s herbicide and insecticide portfolios for oilseeds.
Half of Alberta fields have herbicide-resistant wild oats
The short-term gain from growing profitable crops too frequently will bring long-term pain, say weed experts
Reading Time: 4 minutes For Craig Shaw, herbicide resistance is a wreck waiting to happen. “It’s manageable at the present moment, but I wouldn’t guarantee it will remain manageable moving forward,” said Shaw, who has widespread herbicide resistance on his farm near Lacombe. “We’ve learned our lesson in terms of staying on top of weed control and making sure[...]
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Top 10 weed management practices
Herbicide resistant weeds are no longer a novelty, they’re the norm
Hugh Beckie, a research scientist with Agriculture and Agri-Food Canada, said it’s a challenge to get farmers to implement herbicide-resistance best management practices (BMP) because growers are diverse, and one size doesn’t fit all. But Beckie has found that growers who use BMPs tend to have less herbicide resistance. So, in the spirit of David[...]
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Brace yourself — winter annual weeds worse than usual this year
Dry conditions earlier this spring gave winter annuals an edge and for some growers, it’s too late to manage them
Reading Time: 2 minutes The dry conditions of early spring could lead to a spike in winter annual weeds. “Winter annuals could be a problem,” said Neil Harker, research scientist with Agriculture and Agri-Food Canada. “We really haven’t had a lot of spring moisture, so the ones that were already established, like stinkweed and flixweed and winter annual cleavers,[...]
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No time like now to scout for resistance: CCC
Grain and oilseed growers making weekend plans are advised that herbicide-resistant weeds have way fewer places to hide right now. Any weeds that lived through pre-seeding burnoff or post-emergent spraying — where other weeds have clearly died — are best caught early, the Canola Council of Canada said in a release Friday. “It takes 14-21[...]
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U.S. EPA to require weed-resistance restrictions on glyphosate
Reuters — U.S. regulators will put new restrictions on the world’s most widely used herbicide to help address the rapid expansion of weeds resistant to the chemical, Reuters has learned. The U.S. Environmental Protection Agency (EPA) confirmed it will require a weed resistance management plan for glyphosate, the key ingredient in Monsanto’s immensely popular Roundup[...]
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