There are plenty of weedy corn fields across Ontario as a planting season with weather-induced stops and starts has some growers struggling to get crop in the ground and also stay ahead of the weeds. Getting the jump on those weeds, especially in fields relying on post-emergent herbicide programs is critical, says University of Guelph… Read More
Tag: Peter Sikkema
Leaf twisting, burning, cupping, or crinkling — those are just some of the signs that a crop may be suffering from herbicide injury. Why do herbicides cause crop injury? University of Guelph weed researcher Dr. Peter Sikkema says injury causes can be classified into seven basic categories. That list includes extreme weather, unique or variable… Read More
It is the year of the dandelion. The hardy perennial pests are bigger and more plentiful in fields across Ontario than farmers can ever remember. University of Guelph weed scientist Peter Sikkema has been fielding many questions about why the weed is so abundant this spring and how best to control it. When it comes… Read More
Welcome to this Agronomic Monday edition of RealAg Radio! We’ve got a great lineup for you here today. You’ll hear: Marissa Robitaille Balog of the Canola Council of Canada, on a recent Canola School episode on using a pre-emerge herbicide; Peter Sikkema of the University of Guelph Ridgetown Campus, on tackling herbicide-resistant fleabane; and Peter… 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
Hopefully you had a great weekend, whatever that meant for you. Just like that, it’s Monday again. The positive of Monday on RealAg Radio, means we get to talk all things agronomy! Host Shaun Haney has a great lineup for you. You’ll hear: Peter Sikkema of the University of Guelph — Ridgetown Campus, on glyphosate… 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
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
We’ve got a great Agronomic Monday edition of RealAg Radio for you today. You’ll hear: Robyne Bowness Davidson, pulse crop specialist at Lakeland College, on the critical weed-free period and herbicide carryover; Matt Chapple, market development agronomist at PRIDE Seeds, on getting soybeans off to a good start; Joanna Follings, cereals specialist at OMAFRA, and… Read More