The bud stage, when Canada thistle is most palatable to livestock, occurs when purple flowers start opening.

The time to attack Canada thistle is now (or soon)

A herbicide application after a hard frost can hit the noxious weed where it lives

Reading Time: 3 minutes Of all the weeds beef producers should focus on, Canada thistle is high on the list. Livestock avoid the prickly plant and it’s said to cost Canadian ag and forestry $7.5 billion in lost revenue annually. Fall control on pasture might be one of the most effective tools in stopping growth of the noxious weed, […] Read more


File photo of palmer amaranth — the taller yellowish plants — infesting a U.S. cotton field. (Photo courtesy ARS/USDA)

Palmer amaranth pops back up in Ontario

Weed infamous in U.S. for multiple herbicide resistances

A single plant that showed up this summer on the edge of a southwestern Ontario cornfield is cause for concern among Canadian farmers, weed specialists warn. Writing Monday in the ag ministry’s Field Crop News, Ontario provincial weed management specialist Mike Cowbrough said the plant in question, found in Wellington County, is confirmed as palmer […] Read more

Farming Smarter attendees inspect the plot used to demonstrate roller crimping, a weed control technique.

Soil health main topic of Farming Smarter field school

Novel crops like prairie rice sparked discussion among attendees

Reading Time: 3 minutes Soil health was the main focus of this year’s Farming Smarter field school but novel new crops like rice also got some of the spotlight. Despite a cool and wet day in late June, a full house of farmers made their way through the damp fields. While a lot can be learned in a classroom […] Read more


Neale Heinrich stands in front of the Redekop Seed Control Unit at its booth at Ag in Motion on July 18, 2023. (Braedyn Wozniak photo)

At Ag in Motion: Herbicide resistance fight needs integrated seed management

'Those seedlings we don’t manage to kill (are) probably the most herbicide-resistant'

Harvest weed-seed control takes aim at reducing herbicide-resistant weeds that western Canadian farmers find more and more every year. At the Ag in Motion outdoor farm show this week, field residue management manufacturer Redekop won the Innovations Award for Environmental Sustainability for its harvest Seed Control Unit, which destroys more than 95 per cent of […] Read more

Originally a tow-behind unit that attached to the back of the combine, the newer iteration of the Harrington Seed Destructor is a mill that can be integrated with the combine. (Photo: deBruin Engineering Pty Ltd.)

At Ag in Motion: Harvest weed control still in the mix

'You’re not going to spray your way out of this'

It’s a relatively new solution to the age-old problem of trying to get rid of weeds without broadcasting the seed or using increasingly less effective herbicides — mechanical separation and pulverization of weed seed. Harvest weed seed control might not be a golden bullet to tackle glyphosate-, fluroxypyr- and dicamba-resistant weeds, but according to Agriculture […] Read more


A New Zealand producer made farming without glyphosate the focus of his Nuffield research in 2019, and what he learned was a “real wake-up call.”

A world without Roundup is a ‘real threat’

But reduced use is an option and can thwart both proposed bans and resistance

Reading Time: 6 minutes Glyphosate changed farming across the globe — but if farmers don’t want to lose the ‘chemical of the century’ entirely, they’d better use it less often. That’s the view of a seed grower from New Zealand who made farming without glyphosate the focus of his Nuffield research. It’s hard to overstate the impact of this […] Read more

There are 75 regulated and prohibited noxious weeds in Alberta.

Weed-free forage program relaunched

Some counties are now offering inspections to ensure invasive weeds are not present in hay

Reading Time: 2 minutes A program aimed at preventing the spread of invasive and noxious weeds via hay is getting a second shot. Alberta’s first go-round with a Certified Weed Free Forage program a decade ago never fully took off but the Alberta Invasive Species Council has revived the initiative. “Use of certified weed-free forage is a best management […] Read more