Canadian corn and soybean growers have a new tool to tackle resistant and tough-to-control weeds. Zidua SC, a new Group 15 herbicide from BASF, will be available in 2018. Deven Esqueda, BASF corn and soybeans crop manager, says the herbicide is labelled for use in herbicide-tolerant soybeans and field corn. With the active ingredient pyroxasulfone,… Read More

“If it doesn’t impact me, I don’t care…” I have attended many conferences across Canada and nothing gets farmers to fall asleep faster than speeches of the threat (actually, it’s reality) of herbicide resistance. For many farmers, it seems, they either don’t see this as something that impacts them or they don’t think it’s as serious an… Read More

This year, the organizers of the Crop Diagnostic School in Carman, Manitoba, decided to do something a little old-school. “We decided to demo soil-applied herbicides here at the farm this year for the Diagnostic School, in part because we’re seeing an increased use in the products,” Jeanette Gaultier explains in the following interview. Gaultier (who may or… Read More

If you’ve noticed more than a few fleabane “escapes” in recent years, you’re not alone. Glyphosate resistant Canada fleabane has spread across more than 700 kilometers of Ontario crop land in just five years. Despite its incredible distribution, Canada fleabane wasn’t the first glyphosate resistant weed found in Ontario, says Dr. Peter Sikkema, field crop… Read More

If you look up the term “superweed,” you’ll likely find a definition that includes “herbicide-resistance” and “accidental crossing” of genetically engineered plants and their “wild” counterparts. But, that could be changing, thanks in part to the Weed Science Society of America (WSSA). “Since superweed is now clearly part of the public vernacular, we decided to… Read More

From seeding rates, to seeding date, crop rotation and more, managing herbicide resistant weeds is about so much more than just what you decide to spray your fields with. That’s because each decision that impacts weed pressure, also impacts weed control, and every time you go over your crops with a herbicide, you’re putting selection… Read More

Herbicide resistant wild oats are pretty easy to identify, says Neil Harker, a research scientist in weed ecology and crop management at Agriculture and Agri-Food Canada’s Lacombe Research Centre. “You generally see them in patches. If you see [wild oats] in real straight lines, then you suspect a sprayer error, but if you just see them in… Read More

Palmer amaranth could be the next glyphosate resistance weed problem for Ontario farmers. University of Arkansas weed scientist Jason Norsworthy calls it “pigweed on steroids.” Norsworthy, who first saw glyphosate-resistant palmer amaranth in Arkansas in 2006, says the weed can grow two to three inches a day after it reaches four inches tall. “You can… Read More

 

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