There are a number of reasons why herbicides sometimes fail to control weeds. Perhaps surprisingly, one of the easier things to rule out is whether the weed is herbicide resistant. Ontario Ministry of Agriculture, Food and Rural Affairs weed specialist Mike Cowbrough says many universities across Canada conduct testing for herbicide resistance, but growers have… Read More

Can spray technology help us better manage the escalating problem of herbicide-resistant weeds? Spray guru Tom Wolf, from Saskatchewan-based Agrimetrix Research & Training, certainly thinks so. At the recent Canadian Weed Science Society meeting at Niagara Falls, Ont., Wolf highlighted two technologies he believes could help help growers manage weed resistance. In this video, Wolf and… Read More

There’s a new option for those having to deal with pesky weeds in Canada. The Pest Management Regulatory Agency (PMRA) has cleared the way for a new pre-seed/pre-emerge herbicide for use on lentils, field peas, soybeans, and corn. BASF’s new Heat Complete will be available for producers for next year’s crop season. The herbicide  has both Group 14… Read More

Kochia is known for being an aggressive, adaptive weed. This year showed some farmers just how tenacious this species is. At spray timing, at harvest, and even after, kochia is a constant issue, and it’s not going away any time soon. Jason Lindgren, with NuFarm Canada, says that lighter competition this year due to dry… Read More

The Spray Guys are back with a Canadian culture mash up that sees them reprise the roles of Bob and Doug McKenzie, everybody’s favourite beer drinking duo. In this episode of Exploding Spray Myths, our two hosers, played by Jason Deveau and Tom Wolf, somehow manage to jerry-rig a satellite hot stove lounge where they interview… Read More

The U.S. Environmental Protection Agency (EPA) has granted a temporary extension to the registration of dicamba, including product sold under the trade name XtendiMax, through 2020. The EPA has fielded numerous complaints about spray drift from the product, the majority of which stem from dicamba sprayed on herbicide-tolerant crops, initially released in 2017. The EPA… Read More

Earlier this year, Dr. Peter Sikkema, professor with the University of Guelph and his research team confirmed Group 14 resistance in waterhemp at multiple locations in Ontario. Sikkema’s research team, including graduate student Lauren Benoit, has also confirmed waterhemp with cross-resistance to Groups 2, 5, and 9, as well as 14. In this episode of the Resistance Management… Read More

Ontario ministry of agriculture weed specialist Mike Cowbrough says it’s easy to pick on a herbicide when it doesn’t meet your weed control expectations. Unfortunately, he says, most growers don’t often have an opportunity to compare herbicide programs in their own field using check strips or unsprayed areas to test performance. But Cowbrough does have… Read More

Highly competitive crops that make it difficult for weeds to gain a foothold in fields play a key role in effective herbicide resistance management. One way to make your crop more competitive is to increase seeding rates to produce higher plant populations. In this episode of RealAgriculture’s Resistance Management School, University of Manitoba weed scientist… Read More

There’s a new tool available for growers in the fight against herbicide-resistant weeds, such as Canada fleabane. Corteva Agriscience has launched Elevore, a Group 4 herbicide option for pre-plant burndown of broadleaf weeds, including glyphosate-resistant Canada fleabane, in both field corn and soybeans. Last week at Canada’s Outdoor Farm Show, Dave Kloppenburg, Corteva’s Canadian category leader… Read More

Herbicide resistance is nothing new to Ontario farmers. It all started in 1973 when triazine-resistant lamb’s-quarters were found on a farm near Ripley, Ontario. Group 2 herbicide-resistant weeds were first documented in 1996. Fast forward to 2018, and we find that the province is now home to a host of glyphosate-resistant weeds including Canada fleabane, giant… Read More