Reading Time: 3 minutes Neil Harker says that when you no longer have the big hammers in the tool box, it’s time to use the little ones. For the Agriculture and Agri-Food Canada (AAFC) weed scientist, wild oat herbicides are the big hammers, and the little ones are integrated weed management practices. Harker says that although western Canadian producers […] Read more
The more you spend, the less they work
If you want to keep using herbicides, give them an occasional rest and try a winter cereal or a heavier seeding rate
Minnesota probes Palmer amaranth’s sudden appearance
Reading Time: 2 minutes 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
Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?
#PestPatrol with Mike Cowbrough, OMAFRA
Reading Time: 2 minutes There is a belief that the increased acreage planted to genetically engineered (GE) crops has led to an increase in herbicide-resistant weeds. However, results from the University of Guelph’s herbicide-resistant weed-testing laboratory indicate otherwise. Table 1 (below) summarizes the number of species confirmed as resistant to common herbicides used in Ontario during the past 40 […] Read more
EPA approves Monsanto’s dicamba weed killer
Reading Time: < 1 minute 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.
WGRF research offers faster herbicide testing
WGRF-funded research offers a rapid test to determine whether your weed escapes are Group-2 herbicide resistant
Reading Time: 4 minutes You sprayed 10 days ago and yet that patch of wild oats is still thriving. So you do what farmers across the Prairies do in this situation: take a sample and send it in to the Crop Protection Lab (CPL) in Regina and wait. Depending on the problem, some answers come in just a few[...]
Read more
Read more
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[...]
Read more
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
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.
No time like now to scout for resistance: CCC
Reading Time: 2 minutes 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[...]
Read more
Read more
A message from April Stewart, Country Guide's Associate Editor
