Reading Time: 5 minutes Maybe they can resist chemicals, but they can’t resist being crushed — or at least not yet. Harvest weed seed control is the latest development in the battle against weeds, with early adapters working with different designs and seeing success. The concept employs seed mills attached to the rear of the combine, gathering weed seeds […] Read more
If you can’t spray ’em… terminate them
Crushing weed seeds as they go through the combine is another option
New threat to weed management
Metabolic-based resistance is setting off alarms south of the border. There won’t be any easy answers
Reading Time: 6 minutes Here in the 2020s, herbicide resistance seems just part of the reality of managing weeds. It’s certainly not a new topic. We faced resistance to atrazine in the 1970s, then Group 2 ALS inhibitors in the 1990s and a more recent, widespread resistance to glyphosate. But of course the resistance threat keeps getting more complicated: […] Read more
PHOTOS: Pest Patrol: Cover crops versus glyphosate-resistant weeds
#PestPatrol with Mike Cowbrough, OMAFRA
Reading Time: < 1 minute Q: Can cover crops be an effective tool to manage glyphosate-resistant weeds? A: My colleague Dr. Clarence Swanton (University of Guelph) used to say that based on research he did in the 1980s, one should not expect to control weeds with cover crops. Their utility was in preventing soil erosion and improving soil health but […] Read more
If you can’t spray ’em, crush ’em
While there’s no single solution to herbicide resistance, the Harrington Seed Destructor may be part of the toolbox
Reading Time: 5 minutes Some of the most creative insights and practical solutions for battling herbicide-resistant weed control come from Australia. It was there, in 1996, that the world’s first documented case of glyphosate resistance was found in annual ryegrass, which is Australia’s No. 1 weed problem. As of January of this year, the Australian Glyphosate Sustainability Working Group […] Read more
Managing herbicide resistance costs
Farmers considering herbicide resistance strategies are looking at the economics first
Reading Time: 5 minutes There are several reasons many farmers haven’t yet adopted herbicide resistance management (HRM) plans. These include a lack of information, the complexity of different management strategies and limited time. But a major reason is still economics. Many farmers worry about the costs of implementing a resistance management plan, especially if they’re uncertain about the potential […] Read more
Herbicide resistance, selection pressure, reducing options for weed control
Pay close attention to weeds that survive herbicide applications, says one U.S. farmer
Reading Time: 5 minutes Arkansas has been ground zero for herbicide-resistant weeds. For instance, the state is second only to Australia in the amount of herbicide-resistant ryegrass in wheat. “We’re actually running out of herbicides, making it difficult for us to even grow wheat in Arkansas, because of the levels of resistance that we have,” said Dr. Bob Scott. […] Read more
VIDEO: “Old soil-applied” solutions for herbicide resistance weeds
Crop Diagnostic School: Know your target weed issues before choosing a herbicide
Reading Time: < 1 minute To help keep herbicide-resistant weeds at bay, some older soil-applied products are rejoining the fight. At the 2015 Crop Diagnostic School, Jeanette Gaultier, pesticide use specialist with Manitoba Agriculture, Food and Rural Development, talks about which herbicide-resistant weeds producers should watch for and what they need to consider before choosing a herbicide for their situation.
Pest Patrol: Are there any promising new mechanical methods for weed control?
The Harrington seed destructor is one possibility to help avoid spreading weed seed
Reading Time: 2 minutes Ray Harrington, an innovative farmer from Western Australia was struggling with herbicide-resistant weeds, so he took matters into his own hands by using a cage mill from an old mine that he adapted to process the chaff coming out the back of his combine. A team from the University of Western Australia, led by Michael […] Read more
A message from April Stewart, Country Guide's Associate Editor
