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Tag Archives herbicides

(File photo by Dave Bedard)
Crops, Reuters

Bayer takes battle over Roundup cancer claims to U.S. Supreme Court

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Reading Time: 2 minutes Frankfurt | Reuters — Bayer, trying to contain billions of dollars in legal costs, filed a petition with the U.S. Supreme Court to reverse an appeals court verdict that upheld damages to a customer blaming his cancer on the German group’s glyphosate-based herbicides. Bayer last week lost a third appeal against verdicts that sided with […] Read more
The logo and trading info for Corteva Agriscience displayed on the New York Stock Exchange in New York. Photo: Reuters/Brendan McDermid
Reuters

Corteva lifts sales forecast on strong demand for crop protection products, seeds

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Reading Time: < 1 minute Reuters – Corteva Inc on Thursday raised its net sales forecast for the year after strong demand for crop protection products such as herbicides and insecticides helped the agricultural company beat estimates for the second quarter. Corteva also announced a new $1.5 billion share repurchase program, in addition to a $1 billion buyback announced in 2019, […] Read more
Figure 1: A field of winter wheat where bluegrass has headed at the same time.
Cereals, Crops

Pest Patrol: Bluegrass management in winter wheat

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 3 minutes Yield losses of more than 50 per cent can occur from bluegrass competition in winter wheat. As well, because bluegrass species often head at the same time as winter wheat, they could intercept and reduce the amount of fusarium head blight fungicide that actually reaches the grain head (Figure 1 at top).  There are several […] Read more
Big Canada thistle plants can spell trouble in the combine, especially when there are large patches of them.
Canola, Crops

Fall herbicide application timing in canola

To control perennial weeds in canola, there are benefits to both pre- and post-harvest control options — the deciding factor could be tied to your goals

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Reading Time: 5 minutes Glacier FarmMedia – When deciding between a pre-harvest or post-harvest spray application to control tough perennial weeds, there are always some key considerations for farmers. The extent of the weed problem and harvest timing are important ones, of course, but other factors such as herbicide cost and killing frost also play into the decision. To […] Read more
(File photo by Dave Bedard)
Crops, Reuters

U.S. judge raises doubts ahead of hearing on Roundup settlement

'The last question is a killer'

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Reading Time: 2 minutes Reuters — A U.S. federal judge on Tuesday questioned a US$2 billion proposal by Bayer that would create a framework for resolving future claims that its Roundup herbicide causes cancer, casting doubt on the plan a day before a key hearing. Bayer and class action attorneys hope U.S. District Judge Vince Chhabria in San Francisco […] Read more
Pigweed at the two-leaf stage of growth which is the optimum stage for some post-emergent herbicides.
Crops

PHOTOS: Pest Patrol: Maximum weed stage where herbicides are still effective

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: < 1 minute A generation of glyphosate use has redefined what we mean by “apply herbicides to weeds that are small and actively growing.” Many interpret “small” to mean “about 15 cm” (six inches). If using “older” herbicides to manage glyphosate resistant weeds and your idea of small is 15 cm, then you may be disappointed with the […] Read more
The stage of lamb’s quarters when it is most susceptible to conventional herbicides. When lamb’s quarters is taller than 10 cm, control with glyphosate is reduced when applying at a rate of 0.67 l/ac. (540 g/l concentration). Increasing the rate to 1.34 l/ac. is needed to achieve adequate control.
Crops

Pest Patrol: Maximizing control of common lamb’s quarters

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 2 minutes Lamb’s quarters has consistently been identified as the most abundant and problematic weed affecting field crop production in Ontario even though the Pest Management Regulatory Agency database contains hundreds of herbicides that list lamb’s quarters as a susceptible weed. There is an arsenal of products available to farmers for the control of this weed, so […] Read more
It’s recommended that the Hypro 3D nozzle is in a forward-backward configuration to ensure better coverage.
Crops, Equipment

A nozzle approach to spray coverage

Design of this 3D sprayer nozzle began in the U.K. and now has a global reach

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Reading Time: 6 minutes Although they’re essential on today’s commercial farms, sprayers typically rank third in importance behind seeding equipment and combines, and maybe that’s fair considering the importance of how the crop starts and how it finishes. Still, there’s no denying that the jobs you do with your sprayer are taking on new importance. Just think herbicide-resistant weeds, […] Read more
Farmers are looking for a solution to glyphosate-resistant Canada fleabane, which is a growing concern.
Crops

Can less be more when tackling herbicide resistance?

A coming formulation of glufosinate seeks to cut rates yet maintain efficacy

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Reading Time: 4 minutes In the past five years, growers across Canada have been hearing more and more about a new weed control mantra. It’s called “doing only what’s necessary.” Weeds continue to challenge and frustrate in the field, of course, and there are always new issues like resistance in species such as Canada fleabane in the East or […] Read more
Waterhemp is now resistant to seven modes of action and is also showing signs of metabolic-based resistance.
Crops

New threat to weed management

Metabolic-based resistance is setting off alarms south of the border. There won’t be any easy answers

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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

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