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“There are waterhemp populations, mostly in the States, that are resistant to nine different herbicide groups. At that point, you have no options left.” – Kim Brown Livingston.
Crops, News

The end of the chemical era draws near for farms

The future of weed control is going to require a more balanced approach

By
Chemical herbicides have long been the jewel in the crown of weed management, but after seven decades of use, natural selection is turning back the calendar. Herbicide resistance in weeds was first discovered in the 1980s and the problem has steadily increased. With no new chemistries introduced in more than 30 years, it’s clear that
A new research chair aims to give Manitoba farmers new and better tools to fight weeds in their fields.
News

New research chair aimed at weeds

Farmers’ dollars help kick start new research chair position at U of M

By
A new University of Manitoba research chair is taking the fight against weeds to the next level. The Manitoba Crop Protection Chair in Weed Management is dedicated to research that will support integrated weed management strategies. In late September, the university announced the appointment of Dilshan Benaragama to the new role. “This is a great
A kochia infested field.
Crops, News

Late harvest hampers fall weed control efforts

Narrow regrowth window, cooling temperatures play role in limiting applications

By
Manitoba’s weed specialist says this year’s late harvest has thrown a wrench into many farmers’ fall control plans. Normally, it is recommended that farmers wait four to six weeks after harvest to allow weed regrowth before spraying. “This year, we just don’t have the calendar days to do that,” said Kim Brown-Livingston, Manitoba Agriculture and
At the Quebec site, a sandblasting unit was rigged up to the side of a tractor.
Crops

Research team looks at sandblasting-style weed control

‘Projectile’ method needs work to tackle between-row growth

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Glacier FarmMedia – A plot of white beans at Agriculture and Agri-food Canada’s (AAFC) Harrow, Ont. research farm is part of a new four-site study taking a sandblasting-style approach to weed control in Canadian crops. “No, it’s not a joke,” begins a news release from the federal agriculture ministry about the research into what’s being
Purslane combines two rare types of photosynthesis to endure drought while remaining highly productive.
Crops, News

Weed is a ‘super plant’ under drought conditions

Most plants shut down growth to survive drought, but purslane can keep going

By
A common weed harbours important clues about how to create drought-resistant crops in a world beset by climate change. Yale scientists describe how Portulaca oleracea, commonly known as purslane, integrates two distinct metabolic pathways to create a novel type of photosynthesis that enables the weed to endure drought while remaining highly productive, say Yale scientists. “This is a very
Waterhemp in soybeans.
Crops

Timing is critical to scout for waterhemp

This tier one noxious weed must not be allowed to set seed, and once it’s established it’s tough to root out

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Manitoba’s weed specialist says it’s time to be vigilant about waterhemp. “We’ve got a lot of waterhemp findings in the province all of a sudden,” Kim Brown-Livingston told the Co-operator. “It’s resistant to multiple herbicide groups, it’s a very aggressive weed, it’s a very prolific seed producer and … you just can’t get rid of
Alfalfa patches poke from a sea of grass at a Manitoba Beef and Forage Initiatives site north of Brandon.
Forages, Livestock

A marginal pasture takeover

Three years of trials, one drought and two potential methods for inserting legumes in a faltering pasture

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Not every attempt to improve a sandy, weed-wracked pasture north of Brandon has been successful for the Manitoba Beef and Forage Initiatives (MBFI). But four years after an experiment on marginal land improvement ended, some plots are going strong. “The goal was really to look at the success of different methods of introducing alfalfa into an existing grass
A section of pasture shows evidence of careful grazing around leafy spurge stems.
Livestock

Living with leafy spurge

Research projects look at how to manage, not eliminate, this pasture weed

By
In terms of nightmare plants for pasture management, leafy spurge is a scary one. It’s an official noxious weed, invasive, deeply rooted, able to spread through both seed and creeping roots and almost impossible to eliminate. Its thick patches can wreak havoc on pasture productivity for most outdoor livestock species, goats and sheep being the
Wild oat a growing resistance challenge
Crops, News

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

By
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 concerning. “Resistance is

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