GFM Network News


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

When scouting pea leaf weevil, it’s important to start looking early in the season, as newly
emerged peas are the most vulnerable to damage. Begin at field edges and work your way into the field. Typical damage includes “c”-shaped notches in the leaves.

Pea leaf weevil management: early identification key

Q & A with an expert

Q: When and how should I scout for pea leaf weevils? A: The pea leaf weevil, an invasive species, has caused notable damage and yield loss in pulse crops across the Prairies. Identifying and managing the pea leaf weevil early in the growing season is key to minimizing damage and protecting your yield potential. Adults […] Read more


By controlling grasshoppers in the nymph stage, you can keep them from feasting on your fields later on when they reach adulthood.

Higher grasshopper nymph populations expected this spring in Manitoba

Manage nymphs in hatching areas before they disperse into crops

It’ll come as no surprise to Manitoba producers that the major pests to watch for this coming growing season are flea beetles in canola as well as grasshoppers and cutworms across all Prairie crops. All three are well established in Manitoba, all three overwinter in the province and all three showed high populations last year. […] Read more

Flea beetle.

Expect flea beetle and cutworm issues in Alberta fields

Grasshopper population levels will depend on weather, for one

Spring is finally coming to Alberta crop fields. Unfortunately, insect pests won’t be far behind. Weather, natural population cycles and wind conditions are just a few factors influencing insect pest numbers this season. Grasshopper Alberta is home to 85 species of grasshoppers, three of which caused economic damage to Alberta fields last year. In the […] Read more


Two-striped grasshopper and wheat midge numbers on the rise in Saskatchewan

Another dry spring could also increase flea beetle pressure

Exactly which insect pests will chomp their way into your crops this year and how much damage they’ll do depends on wind, weather and, above all, your scouting and management choices. This year, Saskatchewan growers should keep an eye out for rising populations of two-stripe grasshopper and wheat midge, meanwhile dry spring conditions will increase […] Read more

Crop advisor casebook: Crop circles in Manitoba soybeans

A Crop Advisor's Solution from the April 21, 2020 issue of Grainews

Like most people, I’ve heard of those mysterious formations in farmers’ fields known as crop circles, but I never thought I’d run into one. I wasn’t quite sure what to make of it when I got a call last June from a farmer who said he’d spotted some circular patches in one of his soybean […] Read more


Saskatchewan bugs to watch for in 2019

Low survey results in 2018 could be good news for Saskatchewan farmers this season

The 2018 pest survey results for Saskatchewan look like good news for the 2019 season. Grasshopper, pea leaf weevil and diamondback moth populations were all low in 2018. Large numbers of Bertha armyworm moths were caught in the Outlook and Watrous areas, but these do not necessarily predict 2019 populations. Saskatchewan Ministry of Agriculture integrated […] Read more

An insect was causing these pinholes in Lenny’s crop. But which one? Not all corn varieties were impacted.

Crop advisor casebook: Pest leaves puzzling pinholes in corn silage

A Crop Advisor's Solution from the January 8, 2019 issue of Grainews

Lenny is a central Alberta producer who owns a farm west of Irma where he grows corn silage for his purebred Simmental cattle herd. We have been working with Lenny and his corn silage plot for three years now, and I examine the plot about once every week during the growing season to monitor its […] Read more


If there are high levels of cutworms in your fields, control them before they do a lot of damage.

Dealing with soybean aphids and cutworms

Hot, dry summer weather can bring soybean aphids into your fields


Soybean aphids tend to come along with hot, dry weather, says Cassandra Tkachuk, production specialist for Manitoba Pulse and Soybean Growers (MPSG). “Moist conditions mean fungal pathogens can help take down populations of soybean aphid. Hot, dry conditions are conducive to them reproducing rapidly.” While this year’s harvest weather wasn’t hot and dry in most […] Read more

This aphid parasitoid died trying to emerge from the aphid mummy.

New Cereal Aphid Manager app

Take this app on scouting and let it help you decide if you need to spray

Aphids can be a big problem in cereal crops, and populations can build quickly. Knowing if and when to spray can be tricky. Decisions are driven by estimated aphid populations and factors can impact them — weather and natural predators. The new Cereal Aphid Manager app can help. This app uses considers these factors to […] Read more