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Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?
Crops

Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?

#PestPatrol with Mike Cowbrough, OMAFRA

By
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
(CaseIH.com)
Crops

Syngenta, DuPont patent new herbicide chemistry class

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Reading Time: 2 minutes The crop chemical arms of DuPont and Syngenta are working together on a new class of herbicide chemistry they’ve jointly patented and taken to the “pre-development” stage. DuPont Crop Protection and Syngenta announced Monday they’ve published a joint patent, titled “Substituted cyclic amides and their use as herbicides,” and expect to launch herbicides based on […] Read more
Eastern black nightshade is a weed that seems to hide well, and requires diligent scouting.
Crops, Soybeans

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

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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
A general image of people protesting
Guide Business, Opinion

The other glyphosate ‘resistance’

Who are the Canadian activists who are pushing for a glyphosate ban, and why are they so convinced they’re right?

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Reading Time: 8 minutes In the September issue of Country Guide I wrote about the Avaaz movement’s effort to ban glyphosate in “The Target is Glyphosate“. As I reported then, if you haven’t heard of Avaaz, you should go to its website today. The prestigious Guardian newspaper says Avaaz (whose name means “voice” in several European languages) is the […] Read more
Photo: File
Crops, Reuters, Soybeans

EPA approves Monsanto’s dicamba weed killer

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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
Yellowing and stunting of sow thistle 10 days after an application of Classic (left) compared to an unsprayed strip (right).
Crops

Pest Patrol: What is the best strategy for managing perennial sow thistle?

#PestPatrol with Mike Cowbrough, OMAFRA

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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
(Keith Weller photo courtesy ARS/USDA)
Crops, Reuters, Soybeans

U.S. agency seeks proof of criminal use of dicamba

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Reading Time: < 1 minute Chicago | Reuters — The U.S. Environmental Protection Agency executed search warrants in parts of southeastern Missouri earlier this month to look for signs of improper use of the herbicide dicamba, the agency said on Tuesday. The searches stemmed from complaints that dicamba, which has only been approved for application on fields before planting season […] Read more
Part of the challenge in dealing with this issue is the perception that it relates to food safety, which is incorrect.
Crops

Another big hurdle for Canadian producers

With MRLs, the problems begin when a test used for regulating trade gets treated as a verdict on food safety

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Reading Time: 6 minutes In the past 25 years, agriculture has seen a full gamut of new programs from environmental farm plans to neonicotinoid-use restrictions in Ontario. Some are relatively farm friendly, some less so. Like them or hate them, they’re all meant to be in the name of sustainability, traceability and food safety and security, which are under […] Read more
Spiny annual sow thistle is now the No. 6 weed, up a full 28 spots from the last survey.
Crops

Why weed surveys matter

Regular inventories across the Prairies provide a valuable indication of emerging problems

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Reading Time: 4 minutes Every decade or so since the mid-1970s, scientists at Agriculture and Agri-Food Canada (AAFC), with the help of many others, have co-ordinated and compiled weed surveys in each of the three Prairie provinces, counting, mapping, noting changes and marking trends. The most recent survey was conducted in 2014 and 2015 in Saskatchewan, with financial assistance […] Read more
Figure 1. The spring following a fall application of glyphosate (left) compared to no application (right).
Crops

Pest Patrol: A refresher on fall weed control

#PestPatrol with Mike Cowbrough, OMAFRA

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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 […] Read more

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