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
Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?
#PestPatrol with Mike Cowbrough, OMAFRA
Dry weather weed control in IP soybeans
Weed control in IP soybeans is always a challenge. This year, it was nearly impossible… but not on all farms
Reading Time: 5 minutes Good weed control in Eastern Canada’s identity-preserved soybean fields this year appears to be just as patchy as the spring and summer rains, particularly in southern Ontario and parts of Quebec. Even Roundup Ready beans were slow to canopy in between rescue rains and required more in-season attention than usual. Then, as crops headed toward […] 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
Pest Patrol: What is the best strategy for managing perennial sow thistle?
#PestPatrol with Mike Cowbrough, OMAFRA
Reading Time: 3 minutes With lateral roots that go as deep as two metres and seed production approaching 10,000 per plant, perennial sow thistle is extremely difficult to eradicate. Its impact can be minimized, however. Management that reduces top growth will lower seed production and root mass over time. But be forewarned. If you decide to take a year […] Read more
The three worst forage weeds
The benefit of attending of Saskatchewan Agriculture’s Crop Diagnostic School at Swift Current last July was having the opportunity to get an up-close look at problems farmers face every season. One of the experts on hand was Rachel Turnquist, a regional forage specialist with Saskatchewan’s Ministry of Agriculture. Turnquist gave us a look at what[...]
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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.
Pest Patrol: A refresher on fall weed control
#PestPatrol with Mike Cowbrough, OMAFRA
Reading Time: 2 minutes Many farmers know the benefits of applying herbicides to perennial weeds in the fall, especially with perennial sow-thistle and dandelion (Figure 1 at top of page). Often, producers will see a reduction in the population of these weeds the next year as well as a delay in their shoot emergence, with both effects providing a[...]
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Pest Patrol: What can be done about field horsetail?
#PestPatrol with Mike Cowbrough, OMAFRA
Reading Time: 3 minutes I get asked about field horsetail management more than any other weed, and it’s the one that I have the least amount of effective solutions for. Sure, you can get reasonably good top-growth control with the right herbicide, but the success is short-lived due to field horsetail’s tenacity. I often joke that the best way[...]
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New weed garden to help sharpen identification skills
Funds remaining from former zero-till research farm will support a spot to see more than 80 of the province’s weed species
Reading Time: 2 minutes It’s been said a weed is but an unloved flower, but now weeds have a garden of their own in WestMan. That’s important because sometimes it can be hard to tell some weed species apart, and control methods can be vexingly target-specific. That makes it important to know just what you’re dealing with, and is[...]
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Rain holds up spraying as weeds thrive in Manitoba
Reading Time: < 1 minute CNS Canada –– A steady dose of rain to start the week has put a crimp on herbicide applications across Manitoba. While weeds weren’t noticeable a few weeks ago due to the relative dryness, they’re definitely becoming more noticeable, according to crop watchers. “We know that with the rain and warmer temperatures, both the crops[...]
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A message from April Stewart, Country Guide's Associate Editor
