herbicide resistance Archives - Page 4 of 9

With the increasing incidence of herbicide resistance, producers must adjust their strategies to manage kochia and other resistant weeds.

Your provincial weed outlook for 2023

Make sure these weeds are on your radar this year

By Jim Timlick April 4, 2023

For as long as agriculture has existed in Western Canada, farmers have been waging a battle to control yield-robbing weeds in their fields. It will be a similar story in 2023. The difference this time around is that battle could be shaped largely by the location where it is being fought. While Manitoba received significant […] Read more

Manufactured in Saskatoon, Sask., the Redekop Seed Control Unit can be fitted onto the back of a combine to provide harvest weed seed control.

Equipment, Features

Use multiple strategies to control weeds in your crops

Rising herbicide resistance means it’s time to broaden your weed control arsenal with chemical, mechanical and non-chemical methods

By Mark Halsall March 27, 2023

Herbicides have long been the go-to solution for Prairie grain producers fighting weed infestations. Over time, it has led to widespread resistance development in many weed species and a shrinking list of chemical options for controlling pervasive weeds like kochia and wild oats that have become resistant to multiple modes of action in recent years. […] Read more

It’s not just a matter of new resistant weeds turning up, weeds that already have resistance are also spreading out.

Columns, Crops, Editor's column

Editor’s Column: Outside-the-box weed control

By Mark Halsall March 1, 2023

It’s a frequent refrain on the Canadian Prairies — herbicide-resistant weeds are a growing problem that every farmer needs to take seriously. The alarm bells have been going off for some time, so most everyone in Canadian ag knows this by now. An example of that is a Canola Digest article from Jan. 6, 2023, on […] Read more

In Alberta, kochia patches could form in new parts of the field or neighbouring fields where tumbleweeds may have blown, says AAFC’s Shaun Sharpe. Approaches and compacted areas may also be potential areas of invasion and spread as well as along roadsides, grid roads and field margins and around sloughs. Weed specialist Clark Brenzil highly recommends preventing the growth of kochia by planting perennial forages in ditches and even in saline (or otherwise non-productive) areas in fields.

Crops, Features

Weed issues to watch in 2022

How different factors, such as moisture, temperature, herbicide resistance and others, may affect weed populations this year

By Treena Hein April 11, 2022

After a series of dry years on the Prairies — with 2021 being driest of all — the provincial weed outlook for 2022 is varied across Western Canada and field to field. From kochia invading new territory to a possible increase of overwintering weeds — such as later-emerging false cleavers, Canada thistle, shepherd’s purse and […] Read more

Crops, Wheat & Chaff

Three fundamental elements to manage weeds

Q & A with an expert

By Jordan Peterson March 29, 2022

Q: What can I do to reduce potential herbicide-resistance issues? A: Driver weed populations on a farm level tend to remain relatively consistent over time. Some species may move into cropland from field edges and pasture lands and others may leave with reduction in tillage. Generally, the weed species that cause most issues on a […] Read more

Weeds exactly like the one shown above were found in Lucas’ corn field after he sprayed  with Roundup.

Crops, Features

Crop advisor casebook: Why is this Manitoba field full of pigweed?

A Crop Advisor's Solution from the September 21, 2021 issue of Grainews

By Dan Friesen September 22, 2021

Lucas farms near Starbuck, Man., growing corn, soybeans, wheat, oats and canola. I received a call from Lucas at the end of June last year. He suspected he had some herbicide efficacy problems, as he noticed some redroot pigweed was not dying after he sprayed a field of corn with Roundup. “It’s been three weeks […] Read more

Provincial weed specialist Clark Brenzil says Saskatchewan may be coming out of a dry cycle in 2021, which means that C3 weeds, such as wild mustard (shown here) and wild oat could do better this year.

Crops

How will you prep your fields this spring for best weed control?

What you need to know heading into Plant 2021

By Treena Hein April 12, 2021

Farmers need to be on their toes to keep weeds in check and prevent crop injury this spring due to environmental conditions last year and those developing now. To help make the job easier for you, Grainews reached out to weed specialists in each province for their recommendations this spring season. Alberta In Alberta, Agriculture […] Read more

Crops, News

Stopping the spread of wild oats

There’s a fresh focus on the decades-old problem of herbicide-resistant wild oats

By Jeff Melchior March 25, 2021

There are a number of things from the 1970s few people wish to see return: leisure suits, avocado-coloured bathroom fixtures and platform shoes may come to mind. But if you’re a crop farmer, there’s a more serious threat from that era making a comeback — wild oats. Sixty-nine per cent of wild oats across the […] Read more

Improperly cleaned spray booms create a V-shaped pattern of crop damage when starting a new field requiring a different herbicide.

Equipment, Features, Machinery

How recirculating booms can help slow herbicide resistance

AGCO demonstrates value of new sprayer tech with crop tour

By Scott Garvey December 17, 2020

Just a few years ago, herbicide resistance in weeds was something that seemed like a distant concern, something occurring elsewhere; however, it should be no surprise to anyone that today the International Survey of Herbicide-Resistant Weeds, which is a collaborative effort between weed scientists in more than 80 countries, says that is no longer true. […] Read more

In this photo from Mike Cowbrough’s October 2019 Pest Patrol column in Country Guide, light-green waterhemp plants approach the top of a soybean canopy after two ineffective applications of glyphosate. (Supplied photo)

Crops

Group 27 herbicide resistance arrives in Canada

Mesotrione-resistant waterhemp confirmed in Quebec

By Dave Bedard, GFM Network News December 10, 2020

A persistent and fiercely competitive weed that has developed resistance to several herbicide groups since its arrival in Canada is now the first in the country to fight off a Group 27 product. Quebec’s Reseau d’avertissement phytosanitaire (RAP) last Friday reported a patch of waterhemp with resistance to mesotrione herbicide in the Haut-Richelieu municipality, in […] Read more

Daily Network News

USDA attachés forecast some changes in China’s oilseeds, cereals

China urges hog producers to manage output, vows timely reserve adjustments

Farm Credit Canada offers aid to farmers, companies affected by Iran war price spikes

Tag Archives herbicide resistance