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While corn is generally more sensitive to yield loss from weeds, soybeans are more sensitive to Canada fleabane. In field trials, Peter Sikkema found the average yield loss in soybean to be 61 per cent versus 52 per cent in corn.
Corn, Crops

The Canada fleabane problem

At current corn and soybean prices, the value of control is at an all-time high

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Reading Time: 4 minutes If you think you’ve heard the same message about glyphosate-resistant Canada fleabane more than once, you’re probably right. But that doesn’t mean you should pay less attention, especially since it’s particularly important if you’re growing corn. The problem of resistant biotypes isn’t getting much better, says Peter Sikkema, weed scientist with University of Guelph’s Ridgetown […] Read more
Another example of good weed control in soybean with Roundup.
Crops, Soybeans

Impact of delayed post-emergence herbicide in soybean

#CropPatrol: Consider a two-pass treatment tailored to the weed spectrum in each field

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Reading Time: 3 minutes The landscape for soybean production in Eastern Canada continues to evolve, influenced by newer cultivars, herbicide-resistant technologies and longer growing seasons. In 2021, Ontario growers planted more than 2.9 million acres of soybean, with a farm-gate value of nearly $1.5 billion. Despite these advances and the money at stake, growers still risk yield losses averaging […] Read more
(Leonid Eremeychuk/iStock/Getty Images)
Crops, Reuters

U.S. trade commission sues pesticide makers, alleging price scheme

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Reading Time: < 1 minute Washington | Reuters — The U.S. Federal Trade Commission on Thursday sued two top pesticide manufacturers for allegedly entering into exclusive contracts with distributors that kept prices paid by farmers artificially high. The consumer watchdog agency was motivated to bring the case in part because rising costs and supply chain disruptions from Russia’s invasion of […] Read more
Wild buckwheat was one species found at the Exeter site researching the effects of delayed herbicide applications.
Corn, Crops

The impact of delayed post-emergence herbicide in corn

#CropPatrol: Corn seen to be very sensitive to weed interference

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Reading Time: 2 minutes Ontario farmers grow most of the corn produced in Canada, with 2.2 million acres produced in 2020, a value of more than $2 billion. However, the crop is sensitive to early weed interference. The Weed Science Society of America (WSSA) reported an average corn yield loss of 50 per cent if weeds are left uncontrolled. […] Read more
(File photo by Lisa Guenther)
Crops, Reuters

Corteva to exit some markets, cut jobs in cost-saving push

Canada remains among company's 'core' markets

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Reading Time: < 1 minute Reuters — Seeds and pesticides company Corteva on Tuesday announced plans to exit about 35 countries and lay off roughly five per cent of its global workforce as part of the company’s cost-cutting plans. A surge in inflation this year to four-decade highs has forced Corporate America to slash planned spending and roll out measures […] Read more
Dog-strangling vine along a roadside in York Region.
Crops

Pest Patrol: Dog-strangling vine control with herbicides

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 3 minutes An invasive perennial weed from the milkweed family, dog-strangling vine is extremely difficult to con-trol once it gets established (Figure 1). Progress has been made on biological con-trol of this weed in Ontario through the release of Hypena opulenta, a leaf-feeding caterpillar. However, integrated strategies that include both biological and chemical methods are often most effective […] Read more
The Fendt Rogator is fitted with systems from Raven Industries, Bosch and BASF.
Guide Business

Collaboration not competition

Large firms from different parts of the ag sector are working together to improve herbicide efficiency

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Reading Time: 4 minutes Could agriculture be approaching a crossroads where biotechnology and chemistry can’t do the same jobs they’ve done in the past 20 years? Are resistant weed biotypes beginning to challenge chemicals to the extent that different approaches are needed? The answers are either “yes” or “probably,” further complicated by volatile prices and supply chain disruptions for […] Read more
“Resistance is only going to get worse,” warns Kim Brown-Livingston, Manitoba Agriculture weed specialist.
Crops

Wild oat a growing resistance challenge

Keep an eye on your fields this summer and be ready to tackle the problem when you see it

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Reading Time: 3 minutes Glacier FarmMedia – If you rely solely on crop protection products to fend off wild oats, you’re not going to like the eventual bottom line. Herbicide-resistant strains of the weed are going to mean you’ll eventually run out of luck. It’s not a new problem, but every year it gets just a little bit more […] Read more
The U.S. Supreme Court building in Washington, June 27, 2022. Photo: Reuters/Elizabeth Frantz
Reuters

U.S. Supreme Court again nixes Bayer challenge to weedkiller suits

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Reading Time: 3 minutes Washington | Reuters – The U.S. Supreme Court on Monday rejected another Bayer AG BAYGn.DE bid to dismiss litigation alleging that its Roundup weedkiller causes cancer as the German pharmaceutical and chemical giant tries to avoid potentially billions of dollars in damages. The justices turned away a Bayer appeal and left in place a lower […] Read more
Figure 1: Attempted mixing of Dual II Magnum with ATS as the carrier (left) compared to successful mixing with water (right).
Crops

Pest Patrol: The importance of doing a ‘jar test’ with your herbicides

#PestPatrol with Mike Cowbrough, OMAFRA

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Reading Time: 4 minutes Each year I get more questions about mixing the liquid fertilizer, ammonium thiosulphate (ATS), with herbicides. With reductions in atmospheric sulphur deposits, Ontario research has shown positive yield responses in some crops when sulphur fertilizers are applied, so it makes sense that farmers are looking at ways to add sulphur to their crop in an […] Read more

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