Multi-herbicide resistant weeds have been found in several Canadian and U.S. regions and the amount of ground they cover expands every year. On the list of worst offenders: kochia, wild oats, waterhemp, and Canada fleabane. Herbicides will continue to play a dominant role in weed control, but which herbicides, what type, and when is a… Read More
Category: Waterhemp
Strange weeds, changing leaves, burndown options, and crop lodging are all hot topics this week on Wheat Pete’s Word. As always, host Peter “Wheat Pete” Johnson has some Agronomy Answers to your top questions this week, plus some insights into the value of fungicide in oats and wheat this season, and why scouting edible beans… Read More
Plenty of combines were rolling earlier this week before the wall of water that is the remnant of hurricane Beryl hit Ontario. Not only did this weather system bring sheets of rain, but it may also have brought more tar spot spores from the south. Tar spot has already been found in Ontario, says Peter… Read More
Those green plants sticking out of the crop — are they regular redroot pigweed, or a much nastier pigweed species, such as waterhemp, or even Palmer amaranth? This has become an increasingly common question for farmers and agronomists on the eastern side of the Canadian Prairies as waterhemp that’s resistant to multiple herbicide groups continues… Read More
Waterhemp that’s resistant to multiple herbicide groups continues to march across Ontario, but growers still have options to control the weed. There’s also emerging proof that integrated management could help growers take the fight to the spreading yield robber, says University of Guelph weed scientist Dr. Peter Sikkema. At the Ontario Agricultural Conference earlier this… Read More
Get ready for our year-end wrap-up of The Agronomists! For this episode, host Lyndsey Smith asks the panelists from across Canada what the top weather, disease, insect, and weed challenge were for the 2022 growing season. To cover everything from flea beetles, surprising yields, and noxious weeds, our special guests are Jeremy Boychyn of Alberta… 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
More and more cases of waterhemp are being discovered, and last year, Manitoba saw its first confirmed finding of Palmer amaranth. As many producers are painfully aware — both weeds can be extra difficult to control, and herbicide resistance has only increased. Manitoba’s neighbour to the south is no stranger to either weed, with the… 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
A cool, wet spring has slowed fieldwork and dreams of early planting appear to be disappearing as the calendar turns to May. But the backward conditions have not stalled weed growth in fields across Ontario. That means growers will need to keep a close eye on winter annuals and mounting weed pressure in soybean and corn… Read More