GFM Network News


Manitoba Agriculture has recently confirmed more cases of Tall waterhemp in the province. It’s a tier-one noxious weed that must be destroyed no matter where it’s found.

New cases of Tall waterhemp found in Manitoba

This is a Tier 1 noxious weed that Manitoba Agriculture wants to prevent from spreading

Tall Waterhemp has been confirmed in four new Manitoba fields and there are rumours of more, Manitoba Agriculture weed specialist Tammy Jones said in an interview Aug. 2. Tall Waterhemp is a Tier one noxious weed that must be destroyed no matter where it’s found, but that can include hand weeding within crops where practical,

Farmers who maybe weren't too initially concerned about weed pressure will need to keep a close eye on fields.

A messy year for weeds

Farmers didn’t see many weeds early this year, but agronomists warned that the flush was coming

Manitoba’s spring weather may have set weeds back, but the spray season hasn’t been a picnic for farmers either. Provincial weed specialist Tammy Jones warns that producers might be in for a tough weed control season, despite cool temperatures and dry conditions keeping weeds from gaining ground early this year. Why it matters: Clean fields this spring may have


Kochia's fuzzy leaves makes treating it with a herbicide more of a challenge.

Dry year adds to spray considerations

Manitoba’s weather lately means weeds have toughened up and herbicides may have an uphill battle if weeds aren’t growing vigorously

This year has brought its own quirks to weed control. Kochia is out in force again this year, provincial weed specialist Tammy Jones said. The plants’ fuzzy leaves create their own challenges for herbicide contact, even if the kochia is not showing glyphosate resistance. Glyphosate-resistant kochia has become a significant headache and cause for worry

Manitoba Agriculture's Lionel Kaskiw says cold temperatures are hindering weed growth, but also rendering crop protection products less effective.

Cool weather casts questions on weed burn off

Weeds haven’t exactly flourished in the cold this spring, but the province warns that they are germinating, and the cold itself lends challenges to spraying them out

That spring burn off may not be doing what it’s supposed to if temperatures stay low. Lionel Kaskiw, farm production advisor with the province, is reminding farmers to watch their thermometers when deciding if and when to do a pre-emergent herbicide pass. Why it matters: A cold spring has stunted weed growth, but it also

Kochia seedlings.

Weeds develop defences

Kochia gets hairy and lamb’s quarters get waxy under harsh conditions

Kochia was emerging in Manitoba fields last week and most of it is presumed resistant to Group 2 herbicides, says Manitoba Agriculture weed specialist Tammy Jones. Many could also be glyphosate tolerant, but it’s hard to know to what extent, she said in an interview April 24. “I know that it is distributed fairly thoroughly


Ken Heaman of Agassiz Seed Farm was seeding wheat April 24 north of Roland.

Seeding started – and put on pause by snow

Although moisture is rated as adequate in most areas, a little extra won’t hurt

Bob Bartley started seeding hard red spring wheat April 23, and finished the following day after completing two quarters. Now, following a late-spring storm through much of agro-Manitoba, he’s awaiting Mother Nature and the calendar. “Now I’m going to take a holiday,” he said with a laugh April 25 during an interview. “Now that we

Kochia or tumbleweeds can spread across fields by the tumbling action and get caught in fencelines. This is an example of landscape-scale weed spread issues.

It takes a village to stop weeds

Researchers say the community nature of the problem of invasive weeds hasn’t been adequately incorporated into control efforts

Invasive weeds are a problem that defies solution, and only seems to get worse. That’s because they’re a community problem that cross property boundaries, according to weed scientist Muthu Bagavathiannan, of Texas A&M. Finding a real solution will involve recognizing the nature of weeds as a community problem, and managing them accordingly, he and other

Manitoba Agriculture’s 2018 in-season survey now documents 12 municipalities with glyphosate-resistant kochia.

Glyphosate-resistant kochia confirmed in 12 municipalities in 2018

Testing is the only way to confirm how widespread glyphosate-resistant kochia is in Manitoba

When Tammy Jones’ phone rang last year as often as not it was farmers fed up with kochia spreading in their fields. The Manitoba Agriculture weeds specialist dubbed the tumbleweed ‘weed of 2018,’ in a talk at St. Jean Farm Days last week. “We saw a lot of it,” she said. “It felt like anyone


Even less competitive crops can benefit from an integrated weed management strategy.

Crop establishment important for weed management

Combining many tools into an overall integrated weed management strategy is a winner

There are many components to integrated weed management (IWM) including crop rotation, seeding rates, chemical, cultural and mechanical controls, but one of the most vital aspects of any successful IWM is crop establishment, says Dr. Rob Gulden of the University of Manitoba. At this year’s Crops-A-Palooza event in Portage la Prairie, researchers including Gulden manned

Increasing resistance to chemicals including glyphosate complicates the problem of controlling kochia.

Kochia and salinity: a battle on two fronts

One strategy might be to treat saline patches like a lawn, and mow them before the kochia sets seed


Producers may be looking for a way to beat back kochia, but what does that mean for the salinity problems lurking in the soil? Saline patches were common this year after a second season of below-average moisture. Read more: The year of the tumbleweed “The fluctuations in soil moisture are very linked to the soil