GFM Network News


Cutworm feeding exceeded the action threshold in Ralph’s soybean field. I recommended he apply a Group 28 insecticide in the evening to prevent the pests from devouring the rest of his crop.

Crop advisor casebook: What’s causing bare patches in this soybean field?

A Crop Advisor's Solution from the July 13, 2021 issue of Grainews

Ralph is a farmer who grows soybeans along with wheat, canola and corn on 3,300 acres near Steinbach, Man. He was out scouting his soybeans one day in early June when he couldn’t help but notice a problem in one field. The crop appeared to be thriving with the glaring exception of a number of […] Read more

The two-striped grasshopper.

Tips to scout and identify crop pest grasshopper species

Flying before June, coloured hind wings and sings? It’s not eating your crops. Here’s how to identify the ones that are

It can be hard to distinguish between grasshopper species as many of them appear to look similar. And while they may look alike, only a few of them pose a threat to farmers. A typical Prairie system of pasture, cropland and roadside vegetation, for instance, might have 30 to 40 different species, but only four […] Read more


Reports of spraying for diamond-back moths were very low in Alberta and Saskatchewan in 2020 and limited to only a few fields in Manitoba.

Your 2020 canola insect roundup

How big of a bite did pests take out of canola crops last year?

Mother Nature rarely gives an easy ride on the Prairie pest front. And 2020 was no exception, said James Tansey, Saskatchewan Agriculture’s provincial insect and vertebrate pest specialist, at Canola Council of Canada’s Canola Week 2020 held last December. Though some key canola pest species showed relatively low population densities in 2020, other pests caused […] Read more

In a range of crops last year, dingy and redback cutworms were a widespread problem in Manitoba and may continue to be an issue this year. In Saskatchewan, farmers should be on the lookout for redback and pale western cutworms.

Insect pests to watch for in 2021

Provincial experts discuss top pest threats for your region and offer tips for scouting

It’s easy for farmers to get “scouted out.” Between crop diseases, destructive crop insects and simply checking for yield and growth stage, scouting can be a full-time job in and of itself. Knowing what to focus on can help. Experts across the Prairies are weighing in on the most likely insect threats for the 2021 […] Read more


Figuring out all the angles on rotation can be a complex challenge for farmers.

Rotation, rotation, rotation are a farmer’s best friend in the field

Not rotating crops and chemistries might just be the opportunity crop pests were waiting for

[UPDATED: April 1, 2021] Rotation isn’t a new word, but applying it to all aspects of annual crop production might be a newer concept for western Canadian farmers looking to keep a step ahead of various crop pests, say specialists with Corteva Agriscience. A proper crop rotation, a proper variety rotation, a proper herbicide rotation, […] Read more

Cabbage seedpod weevil.

Prairie Pest Monitoring Network launches website

The new website predicts insect risks, monitors insect populations and offers information on scouting, chemical controls and more

The Prairie Pest Monitoring Network (PPMN) launched a new website last July at Prairiepest.ca. The PPMN is a Prairie-wide insect pest monitoring group that provides valuable information, predicts insect risks, monitors insect populations and offers information to growers and agronomists to help them scout for pests, time their scouting activities, and make decisions about using […] Read more


The nymph (juvenile) stage of 
the twice-stabbed stink bug.

New and notable Prairie crop pest insects

Haven’t heard of canola flower midge? Can’t identify those RED BUGS showing up in your fields? Didn’t know alfalfa weevil populations are developing insecticide resistance? Everything you need to know about new insect threats

Most Prairie farmers know more than they might want to about common crop pests like grasshoppers, cutworms and flea beetles. However, nature likes to throw curveballs, and pests are no exception. Here’s what you need to know about several new-to-you pests currently catching Prairie farmers by surprise. Alfalfa weevil While alfalfa weevils are familiar to […] Read more

The red turnip beetle is a pest that feeds on cruciferous crops such as canola or mustard.

Separating the good insects from the bad

These two insects look similar, but only one is beneficial in your fields


Throughout the growing season growers are tasked with the need to tell the difference between many “good” and “bad” things in the field. Sometimes it is hard to quickly tell the difference. Knowing the difference between things in the field is critical to determine if, when, and how to treat. Take for example the red […] Read more


This photo shows just three of the several different species of wireworm thriving on the Prairies.

Wily wireworm remains a mystery

Lack of effective control allows pest to flourish

Dallas Leduc says he hasn’t noticed any particular yield losses he can blame on wireworm damage in crops on his southern Saskatchewan, grain, oilseed and pulse crop operation, but then for many years they’ve also made a point of using recommended seed treatments as well. “The pest is out there and we may have the […] Read more

Nine pests to watch for if you’re growing flax

Nine pests to watch for if you’re growing flax

Dr. James Tansey, Saskatchewan Agriculture’s insect specialist, reminded farmers at a Saskatchewan Agriculture conference in Weyburn, Sask., that “plants are not a passive part of the environment.” Flax produces poison in the form of cyanogenic glycoside (cyanide) that is toxic to several insects. However, your flax crop may still need some help protecting itself from […] Read more