GFM Network News


Manitoba farmers are finding the spray window an elusive target this season.

It’s a hard crop protection season on multiple fronts

How to manage a dry and windy spray season that has gone from below freezing to extreme heat in a matter of days

Producers are told to spray when weeds are growing, but with both weeds and crop both reeling from a string of stresses and Mother Nature not co-operating, that spray window has been hard to pin down. Why it matters: Hardened weeds and poor spray conditions may leave producers with less effective weed control than they

Palmer Amaranth.

These non-native weeds are big problems in Manitoba

Keep an eye out for these noxious weeds in the coming growing season

The Province of Manitoba has declared the last full week of April as Invasive Species Awareness Week. The Manitoba Weed Supervisors Association (MWSA) recognizes this week by highlighting just a few of the invasive plants considered to be a significant threat to the landscape of our province. Many of these invasive species are mistaken for


Manure being spread at the NDSU Carrington Research Extension Center.

Troublesome weeds spread through manure

Weed seeds pass unharmed through the digestive tracts of animals such as cattle and sheep

Using some kinds of manure as fertilizer can lead to the spread of noxious and troublesome weeds. “It is a known fact that weed seeds pass unharmed through the digestive tracts of ruminant animals (cattle, sheep),” says Mary Keena, livestock environmental management specialist based at North Dakota State University’s Carrington Research Extension Center. “This means that whatever weed seeds

Frosty weeds and closing spray windows

Frosty weeds and closing spray windows

Variables like weed species and recent and expected frosts will weigh into management decisions

Add the weather forecast into your calculations when planning fall weed control. It’s prime weed control season for perennial weeds like Canada thistle and winter annuals and acting now can help you, come spring. “A lot of the winter annuals are starting to become problems because if we don’t do any kind of control in

Redekop pitches combine-mounted weed seed control

Redekop pitches combine-mounted weed seed control

Manufacturer says combine-mounted unit will pulverize weed seeds

Farmer reaction to herbicide-resistant weeds may trend towards, “kill it with fire,” but the latest harvest tool out of Redekop Manufacturing has a different answer for weed seeds: pound them to oblivion. The Saskatoon-based manufacturer recently unveiled its seed control unit, compatible with John Deere combines. With resistant weed pressure and certain herbicides increasingly in


Tammy Jones speaking to attendees during a Crop Diagnostic School session in 2019.

Manitoba Agriculture weed specialist Tammy Jones changing jobs

Starting July 20 Jones is Corteva's technical sales agronomist for Manitoba

Manitoba Agriculture and Resource Development (MARD) is losing its weed specialist Tammy Jones. She took the job in January 2018 and her last day is July 17. Jones becomes Corteva’s technical sales agronomist for Manitoba July 20. Meanwhile, Anastasia Kubinec, MARD’s manager of Crop Industry Development, hopes the department will fill the position quickly. “Getting

A kochia seedling breaks ground near Winkler in late March.

Spring weeds rise up well ahead of seeding efforts

Weed forecasts have farmers expecting to reap the consequences of last year’s lack of field work

Farmers are gearing up for spring seeding, but the weeds have already made it to the field. Manitoba’s provincial weed specialist, Tammy Jones, says producers are already starting from behind on weed control this year, thanks in large part to harvest conditions last fall. Why it matters: Seeding is stressful enough as is, but farmers

Harrington Seed Destructors are widely used in Australia.

Destructor’s weed escapes still fail to germinate

Microscopic abrasions allow microbes to infect embryonic weeds

Many weed seeds that appear undamaged after passing through a Harrington Seed Destructor still fail to germinate, say researchers at the University of Illinois. Developed and widely used in Australia, the HSD is mounted on the back of a combine and crushes weed seeds to prevent them from germinating. A University of Illinois release says



Provincial weed specialist Tammy Jones says leaving small patches of survivors can quickly result in a huge problem as new and highly competitive herbicide-resistant weeds have arrived.

Losing the war on weeds

Tammy Jones has been doing the math on where herbicide resistance is taking Manitoba farmers and the numbers are grim

Tammy Jones spent four hours last summer wrestling with about 300 waterhemp plants in a Manitoba field, yanking them out of the ground by the roots and carrying them to the field edge for destruction. The provincial weed specialist was trying to demonstrate the value of controlling what might seem to be small patches of