Quick adapting and designed to spread, kochia seems biologically primed to shrug off the punches farmers throw at it. |  Manitoba Agriculture photo

The fall weed control checklist

Glacier FarmMedia – Attention to fall weed control is needed as harvest nears its end. Speaking during a Manitoba Agriculture webinar Sept. 25, provincial weed specialist Kim Brown singled out weeds that thrive in salinity, which concerned many producers this spring. Effective fall weed management is essential to maximize crop yields and maintain soil health. […] Read more

Attendees work to identify various weeds at Weed Seedling Identification Day in Carman May 22.  |  Don Norman photo

Early weed identification means easier control

Misidentifying a young weed can make managing it much harder and more expensive later in the growing season

Glacier FarmMedia – Different weeds might warrant different responses if they’re found in a field. The problem is, they might look frustratingly similar in their early stages. “You need to be going out for waterhemp or Palmer amaranth before they’re four inches tall,” said Manitoba Agriculture weed specialist Kim Brown. Those species have provoked a […] Read more


Male (left) and female (right) waterhemp plants.  |  Photo supplied by OMAFRA

The gaps in Palmer amaranth, waterhemp prevention

No one wants Palmer amaranth or waterhemp to become bigger weed worries than they already are in Manitoba, and there’s work currently focused on making sure that doesn’t happen, but locally based knowlege is still thin on the ground. The two boogeymen of the weed realm were recently the subject of a successful resolution brought […] Read more

Waterhemp was first confirmed in Manitoba in 2016 and has since spread through eastern and into central Manitoba and has popped up as far west and north as the Rural Municipality of Dauphin near Riding Mountain National Park and the RM of Ellice-Archie along the Saskatchewan border.   |  File photo

Manitoba farm group takes aim at two noxious weeds

Keystone Agricultural Producers will set its sights on two emerging noxious weeds: waterhemp and Palmer amaranth. A resolution brought forward by University of Manitoba agriculture diploma students during KAP’s March advisory council meeting March 27 aims to give more support to farmers to beat back Manitoba’s growing problem. The resolution would see KAP fund testing […] Read more


Planting perennial forages in ditches is recommended to help keep kochia from getting a toehold.  |  Saskatchewan Agriculture photo

Herbicide resistant weeds creep north into Canada

Weeds know no borders, of course, so when weed trouble or a resistance issue surfaces on the northern U.S. Plains, there’s a decent chance of it turning up somewhere on Canadian cropland sooner or later. “Folks in Manitoba and Saskatchewan will often look south, and we also often look north for the problems our neighbours […] Read more

Palmer amaranth, pictured, and waterhemp can growly very quickly — up to two to three inches a day in optimal conditions. | File photo

Problematic weeds prolific seed producers

Both Palmer amaranth and waterhemp can growly very quickly — up to two to three inches a day in optimal conditions -— and they’re also prolific seed producers, which enables them to quickly take over fields if the plants aren’t effectively controlled. When there’s direct competition with crops, these weeds can produce up to 100,000 […] Read more