Reading Time: < 1 minute Weeds are growing resistant to the herbicides already on the market, and agribusiness companies like Bayer are in a desperate search for new modes of action to help farmers kill them.
Bayer looks to AI to combat herbicide resistance faster
Bayer's Icafolin will be its first new mode of action herbicide in some 30 years when it launches in 2028
Crop-killing weeds advance across US farmland as chemicals lose effectiveness
Losing battle with weeds adds pressures to farmers already stressed by inflation, extreme weather
Reading Time: 4 minutes Crop-killing weeds such as kochia are advancing across the U.S. northern plains and Midwest, in the latest sign that weeds are developing resistance to chemicals faster than companies including Bayer BAYGn.DE and Corteva CTVA.N can develop new ones to fight them.
Waterhemp on the rise
Manitoba’s list of affected municipalities keeps growing
Reading Time: 3 minutes Glacier FarmMedia – 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 […] Read more
Palmer amaranth pops back up in Ontario
Weed infamous in U.S. for multiple herbicide resistances
Reading Time: 3 minutes 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 […] Read more
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'
Reading Time: 4 minutes 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 […] Read more
At Ag in Motion: Harvest weed control still in the mix
'You’re not going to spray your way out of this'
Reading Time: 3 minutes 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 […] Read more
Tips and strategies for pre- and post-harvest weed control
While in-field scouting tops the list, also consider post-spray followups, detailed record keeping, weed assessments, water quality and more
Reading Time: 6 minutes Glacier FarmMedia – Sometimes the simplest solutions are the best ones. Breanne Tidemann, an Alberta-based researcher with Agriculture and Agri-Food Canada (AAFC), says boots on the ground remains one of the most effective strategies when it comes to weed control. “Don’t rely, especially in the spring, on the 80-kilometre-per-hour drive-by. Get out and get those […] Read more
The one-two weed punch farmers are up against
Managing Canada fleabane and waterhemp is an ongoing challenge for IP and Roundup Ready soybean growers
Reading Time: 4 minutes The invasion continues. From 2010 to 2015, glyphosate-resistant Canada fleabane spread from Windsor to the Quebec border — more than 800 kilometres in just six years. Along the way, it evolved resistance to Groups 2 and 9 modes of action. Waterhemp has also spread rapidly, with biotypes resistant to Groups 2, 4, 9, 14 and […] Read more
Winter wheat is a kochia killer
Its head start in the spring gives it an advantage over the troublesome weed
Reading Time: 3 minutes As a yield-limiting weed, kochia has a lot going for it. A single plant can spread tens of thousands of seeds over a wide area after it dries out and starts travelling like a tumbleweed. All kochia across the Prairies is considered resistant to ALS inhibitors (Group 2), but kochia can also be resistant to […] Read more
Wild oat a growing resistance challenge
Keep an eye on your fields this summer and be ready to tackle the problem when you see it
Reading Time: 3 minutes Glacier FarmMedia – If you rely solely on crop protection products to fend off wild oats, you’re not going to like the eventual bottom line. Herbicide-resistant strains of the weed are going to mean you’ll eventually run out of luck. It’s not a new problem, but every year it gets just a little bit more […] Read more
A message from April Stewart, Country Guide's Associate Editor
