GFM Network News



On the left is regrowth of glyphosate-resistant kochia following a harvest date in early August. On the right is regrowth of glyphosate-resistant kochia following the same harvest date but with a post-harvest application of glyphosate and saflufenail.

Seeding strategies benefit pre- and post-harvest weed control

The most effective treatments can involve decisions made at seeding

The early reports from a couple of ongoing field research projects are suggesting some of the most effective treatments for pre- and post-harvest weed control might actually involve decisions made at seeding, say weed specialists. In Saskatchewan, Clark Brenzil, provincial weed specialist with Saskatchewan Agriculture, is looking at how narrower row spacing (10 inches) as […] Read more



Nexus Robotics’ R2-Weed2 uses artificial intelligence to distinguish between weeds and crops. The robotic weeder removed or killed 90 per cent of the weeds during the growing season in field trials in Nova Scotia.

More robotic weeder field trials to take place in Quebec, commercial release 2021

The R2-Weed2 removed or killed 90 per cent of weeds during growing season

Weeds can take over farm fields and lead to significant crop losses. Without adequate control, crop yields could decline up to 50 per cent in corn and soybean fields across the United States and Canada, resulting in US$43 billion in economic losses, according to data from the Weed Science Society of America. Additionally, controlling weeds […] Read more


Wild oat is showing significant herbicide resistance, says Saskatchewan’s provincial weed control specialist.

What weed experts say you should have your eye on in 2020

A province-by-province look at what you need to know about weeds this growing season

Three provincial weed specialists offer their insights on the weeds farmers may find in their fields this growing season and what can be done about them. Manitoba Tammy Jones, a Manitoba Agriculture weed specialist, lists redroot pigweed, lamb’s quarters and green and yellow foxtail as the biggest weed threats this year. Winter annuals like stinkweed […] Read more

Pre-seed weed control is important this spring

Weed control will be a different challenge this year. With little fall weed control and good moisture, fields will have an abundance of overwintered annuals, such as cleavers, flixweed, narrow-leaved hawk’s beard and volunteer canola, alongside spring emergence of other annual and perennial weeds. These overwintered annuals are a particular challenge as they are often […] Read more


Waterhemp.

Watch for expansion of waterhemp, Palmer amaranth and kochia in 2020

Serious weed threats continue to advance and grow, farmers urged to test for resistance

For growers in Manitoba, waterhemp is a serious threat in 2020, reports Tammy Jones, a Manitoba Agriculture weed specialist. This weed was present last year in both eastern and central Manitoba, and Jones’ “biggest fear” is that more will be found in the province this year. And, as reported by Canola Council of Canada (CCC), […] Read more

The Seed Terminator.

Chaff management and mechanical weed control move into the limelight

Equipment available at home and abroad to destroy weeds and weed seed

[UPDATED: May 28, 2020] As resistance to our current herbicide options continues to increase each year, mechanical methods of weed control are moving into the spotlight. The management of weeds being spread by chaff via the combine is gaining attention, and interest is growing in mechanical weed seed impact mills — one of which is […] Read more


Saskatchewan farmers Josh and Jeannie Lade, along with partners, John, Janice, Rayden and Jenn Wiebe, imported two Seed Terminators from Australia to use on the 16,000 acres they farm.

The pros, cons and costs of owning a weed seed smasher

Josh Lade discusses his Seed Terminator and other weed seed-destroying equipment

Along with a growing number of others in Canada, Josh Lade would like his fellow farmers to consider mechanical harvest weed seed control to battle the growing number of herbicide-resistant weeds. With his wife, Jeannie, Lade grows cereals, pulse crops and oilseeds on about 16,000 acres in Osler, Sask., in partnership with John, Janice, Rayden […] Read more

A waterhemp infestation can reduce soybean yields by 40 to 95 per cent.

War on weeds, take no prisoners

Hart Attacks: It will take money and commitment to just to hold enemy line

A recent issue of the Manitoba’s provincial farm newspaper, the Manitoba Co-operator, carried some depressing news. The province might be losing the war on herbicide resistant weeds; reports from the U.S. say despite some kind of trade deal with China, U.S. farmers figure they will need more than a $25 billion bailout in 2020 — […] Read more