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
Category: Waterhemp
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
When glyphosate-resistant waterhemp was first discovered in Lambton County in 2014, University of Guelph weed scientist Peter Sikkema never imagined the course the weed would take across Ontario, or the speed it would travel. Fast forward to 2022 and glyphosate-resistant waterhemp has moved 700 kilometres east to Leeds & Grenville County. The invading resistant weed, often… Read More
Glyphosate resistant waterhemp has spread from Essex Country, Ontario, all the way to Leeds-Grenville County, nearly 700 kilometres away in just seven growing seasons. While the exact path of spread is not known, Dr. Peter Sikkema, weed management professor with the University of Guelph, says that introduction can be through wind dispersal, in livestock feed, or… Read More
The annual Ontario field crop diagnostic days held at Ridgetown, Elora, and Winchester will again go virtual in 2021. The organizing committees of these three highly successful in-field education and learning events are again partnering with crop researchers and extension, along with support from RealAgriculture and a host of sponsors to bring you a series… Read More
Corteva Agriscience and BASF Canada Agricultural Solutions (BASF) have announced a collaboration and joint approach to weed control by recommending the combined use of Liberty 200 SN and Enlist herbicides on Enlist E3TM soybean acres. The combination will work especially well on weeds like waterhemp and Canada fleabane, that are now glyphosate resistant in many… Read More
When glyphosate-resistant waterhemp was first discovered in Lambton County in 2014, University of Guelph weed scientist Peter Sikkema never imagined the course the weed would take across Ontario, or the speed it would travel. In 2020, Sikkema and his team collected seeds in Leeds & Grenville County. “So that means glyphosate-resistant waterhemp has moved 700… Read More
Raven Industries has joined AGCO and BASF as the newest Operation Weed Eradication coalition member, to support farmers in their weed control efforts. Operation Weed Eradication is an industry-wide mission with the goal of enlisting tough-minded farmers and industry leaders whose approach is that the last weed standing is the strongest, most capable and the… Read More
Glyphosate-resistant waterhemp was first identified in Ontario in 2014. Since that time the weed, which hails from the pigweed family, has spread across the province with confirmed sightings in 14 counties in 2019. To make matters more troubling, waterhemp resistance continues to grow beyond glyphosate, and now includes multiple resistance to Group 2, 5, 9… Read More
Do you need to manage herbicide-resistant weeds? Could you use more flexibility during the busy planting season? Does heavy weed pressure make it difficult to keep fields clean early in the season? These are all questions growers should be asking as they plan their 2021 soybean weed control programs, says BASF technical development manager Rob… Read More
It’s time for Day 3 of the virtual Ontario Diagnostic Days! This week, we’re joined by Dr. Peter Sikkema with the University of Guelph, and Mike Cowbrough, weed specialist with the Ontario Ministry of Agriculture, Food and Rural Affairs. This episode focuses on weed management, specifically on glyphosate resistant Canada fleabane and waterhemp, and the… Read More