The advent of herbicide-resistant weeds was bad enough, but the expansion of type, area, and mode-of-action resistance has left nearly no field untouched across the all regions of Canada. What can we do and how did we get here? To tackle that question, host Lyndsey Smith is joined by Dr. Charles Geddes, Agriculture and Agri-Food Canada… Read More
Category: Herbicide Resistant Weeds
There’s no silver bullet when it comes to managing weeds, and managing herbicide resistant populations is even tougher. One of the best ways to get ahead of weeds is crop competition. Jim Stute, independent research agronomist, has been evaluating the role of cereal rye as a weed suppressing crop to surprising results. Recorded at the National… Read More
Welcome back to The Agronomists! We’re kicking off 2023 with a focus on profitability. Is top yield the driver, or is long-term thinking a better bet for profit planning? Joining host Lyndsey Smith to dig in to this topic is Chad Anderson, of Anderson Agronomy Services, and Edgar Hammermeister, Saskatchewan farmer and agrologist with Western… Read More
A North Dakota State University (NDSU) study suggests that some kochia populations in western North Dakota likely have developed resistance to commonly used pre-plant burndown herbicides. Sold under the trade names Aim (carfentrazone) and Sharpen (saflufenacil), Group 14 herbicides are used by farmers to control kochia and other annual weeds. In the NDSU study, a… Read More
As weeds evolve, weed science must evolve to keep up. Today’s weed scientists work hard to tackle evolving herbicide resistant weeds and offer solutions to keep farmers one step ahead. Eric Johnson, weed scientist with the Agronomic Crop Imaging lab at the University of Saskatchewan, has been working on these solutions for decades through his… Read More
When it comes to weed control, we can’t always wait for the next thing in the pipeline, we need to manage what we have — which sometimes means getting creative. For this edition of the Agronomists, host Lyndsey Smith is joined by Jeanette Gaultier of BASF, and Rob Bahry of ADAMA Canada, to discuss clever… Read More
Waterhemp, the invading resistant weed, often misidentified as redroot, green, or smooth pigweed, continues to build resistance against herbicide control in Ontario. University of Guelph weed scientist Dr. Peter Sikkema and his research team have now confirmed waterhemp resistance to Group 27 herbicides in the province. He shared the news earlier this week during a Ridgetown/Simcoe… Read More
Biology is forever adapting — to tillage, to cropping systems, and to selection pressure of herbicide applications. The advent of herbicide resistance has created a huge challenge for farmers across North America. Some of the worst weeds include kochia, fleabane, wild oats, waterhemp, and Palmer amaranth. Managing these weeds and delaying more resistance requires a… Read More
Harvest weed seed control isn’t necessarily new to the agriculture industry. Farmers in Australia have been using seed control units on the backs of their combines to reduce weed seed return to the soil for several years. There are different methods to control weeds with a seed control unit — everything from cost-effective things like… Read More
Boasting “season-long” control of some major weed pests, Bayer Crop Science has announced the registration of Corvus herbicide for corn in Eastern Canada. According to the label, Corvus is effective against waterhemp, lamb’s quarters, velvetleaf, sowthistle, yellow and green foxtail, and barnyard and crab grass. Corvus offers three ways of dealing with weeds: as a… Read More
This past summer, a diligent agronomist in southern Alberta was suspicious of downy brome that was not being controlled by glyphosate. The population in question was widespread in a glyphosate-tolerant canola field in Taber County, Alberta, and was not controlled following multiple applications of glyphosate, says Charles Geddes, weed scientist at Agriculture and Agri-Food Canada,… Read More
Lentils are one of those crops that can be difficult to keep free of weeds. Lentils are a poor competitor with weeds not just as seedlings, but throughout the growing season, as well. Over the past five years, the Western Applied Research Corporation (WARC), has been doing research trials that look at herbicide layering to… Read More
The escalation in the cost of crop inputs, including glyphosate and glufosinate, has some farmers looking for ways to save money. Some farmers have asked if trimming back herbicide rates is a viable option. Going in with a half rate might seem like a good idea, but in the long run it can be a… Read More
It’s time for the season finale of Ontario Diagnostic Days! The annual Ontario field crop diagnostic days held at Ridgetown, Elora, and Winchester are again virtual in 2021. On this live broadcast, University of Guelph professors Dave Hooker and Francois Tardif join host Shaun Haney to talk three hot topics that are sure to grab growers’… Read More
Stacked traits are quite common in corn and increasingly more common in soybean as well, but the concept is still quite new for the balance of Western Canada’s crop mix. Managing with stacked traits adds significant flexibility, says Bayer Crop Science trait and trait launch manager, Andrew Chisholm, and making the most of that added… Read More