News of glufosinate-resistant kochia in the U.S. is concerning as farmers are losing options to control waterhemp, also of the pigweed family.
Tag Archives waterhemp
Glufosinate-resistant waterhemp appears in U.S. Midwest
Signs of such resistance are also developing in kochia, a U.S. weed scientist warns
Into the weeds: 2024 in preview
Prairie specialists consider which weeds are most likely to succeed as the season proceeds
The past few seasons have been a challenging time for farmers on the Canadian Prairies. Extreme heat, lack of precipitation and steep increases in production costs have caused some sleepless nights for many producers. As if those weren’t enough to contend with, another potential threat to crops will soon rear its ugly head: weeds. Grainews […] Read more
Weed alerts on the southern front
A North Dakota weed expert cautions Prairie farmers about kochia, waterhemp and Palmer amaranth and their evolving herbicide tolerances
Of all the things shared by Prairie farmers on both sides of the Canada-U.S. border, an abiding love of their land, fretting over the weather and a no-nonsense, ‘get ‘er done’ attitude are among those that come to mind. Unfortunately, this also includes weed problems. Weeds know no borders, of course, so when weed trouble […] Read more
Planting just one soybean variety is a ‘mistake’
Growers should try at least three, an Ontario soy expert says
Horst Bohner is convinced — completely so — that farmers should plant more than one variety of soybeans. If they don’t, they are making a “mistake,” he says. “As a basic starting point, I think every grower should seed at least three varieties. Every year. As a minimum. Hopefully more than that,” says Bohner, the […] Read more
Your provincial weed outlook for 2023
Make sure these weeds are on your radar this year
For as long as agriculture has existed in Western Canada, farmers have been waging a battle to control yield-robbing weeds in their fields. It will be a similar story in 2023. The difference this time around is that battle could be shaped largely by the location where it is being fought. While Manitoba received significant […] Read more
Crop advisor casebook: Why is this Manitoba field full of pigweed?
A Crop Advisor's Solution from the September 21, 2021 issue of Grainews
Lucas farms near Starbuck, Man., growing corn, soybeans, wheat, oats and canola. I received a call from Lucas at the end of June last year. He suspected he had some herbicide efficacy problems, as he noticed some redroot pigweed was not dying after he sprayed a field of corn with Roundup. “It’s been three weeks […] Read more
Group 27 herbicide resistance arrives in Canada
Mesotrione-resistant waterhemp confirmed in Quebec
A persistent and fiercely competitive weed that has developed resistance to several herbicide groups since its arrival in Canada is now the first in the country to fight off a Group 27 product. Quebec’s Reseau d’avertissement phytosanitaire (RAP) last Friday reported a patch of waterhemp with resistance to mesotrione herbicide in the Haut-Richelieu municipality, in […] Read more
Watch for expansion of waterhemp, Palmer amaranth and kochia in 2020
Serious weed threats continue to advance and grow, farmers urged to test for resistance
For growers in Manitoba, waterhemp is a serious threat in 2020, reports Tammy Jones, a Manitoba Agriculture weed specialist. This weed was present last year in both eastern and central Manitoba, and Jones’ “biggest fear” is that more will be found in the province this year. And, as reported by Canola Council of Canada (CCC), […] Read more
War on weeds, take no prisoners
Hart Attacks: It will take money and commitment to just to hold enemy line
A recent issue of the Manitoba’s provincial farm newspaper, the Manitoba Co-operator, carried some depressing news. The province might be losing the war on herbicide resistant weeds; reports from the U.S. say despite some kind of trade deal with China, U.S. farmers figure they will need more than a $25 billion bailout in 2020 — […] Read more
Managing herbicide-resistant waterhemp in Manitoba
The weed’s movement into Manitoba calls for more vigilant field scouting
Waterhemp was found for the first time in Manitoba in 2016, southeast of Winnipeg in the area around the RM of Taché. The discovery led to the establishment of a waterhemp surveillance program led by Manitoba Agriculture in 2017. More waterhemp was found at a second site closer to the U.S. border. In both circumstances, […] Read more
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