[Saskatoon, SK – July 6, 2017] – Multiple modes of action make a big difference when it comes to slowing down the development of herbicide-resistant weed populations. That’s the message echoed throughout Nufarm Agriculture’s field plot tour, held outside Saskatoon on July 5.
The tour featured cereal, canola, soybean and pulse plots to demonstrate Nufarm’s line of herbicides for pre-emergent control in cereals, canola, soybeans and pulses, and in-crop weed control in cereals. The overriding focus was on strategies to reduce the risk of weeds developing resistance to herbicide groups.
“Using multiple modes of action across multiple application timings helps to manage the selection pressure placed on weed populations by each individual mode of action, and can reduce the proliferation of resistance mechanisms through a weed population,” says Nufarm’s Technical Services Manager Graham Collier.
Agriculture and Agri-Food Canada research scientist Dr. Hugh Beckie updated attendees on the state of herbicide resistant weeds in Western Canada. Dr. Beckie, who worked on the very first case of herbicide resistance back in 1988, said the issue is growing in both complexity and severity. “In 2003 we were seeing 10 per cent of fields impacted, and as of last year we were seeing 57 per cent,” he said. Herbicide resistance hits farmers right in the pocket book, Dr. Beckie explained, citing a recent survey of 300 sites in Saskatchewan that found farmers reporting extra costs of $15-20 per acre to address herbicide resistance. “I’m very happy to see Nufarm’s approach to introducing new and multiple modes of action in the fight against herbicide resistant weeds.”
Weed resistance is a growing challenge for all growers, but how likely resistance is to develop isn’t a mystery. Collier reviewed the key factors that impact herbicide resistance development. “Herbicide resistance can increase exponentially in a field, year by year, depending on the herbicide mode of action, the selection pressure applied to the population, the biology of the weed, and the number of times a specific mode of action is used,” says Collier. “For example, resistance will spread through a kochia population much faster than a wild oat population due to cross pollination, seed production and seed bank longevity. “
Nufarm’s core strength is easy to use products offering multiple modes of action – from pre-seed burndown through in-crop weed control, to fall burndown – Nufarm arms growers with a solid weed resistance management strategy across their cereal, pulse, canola and soybean crops.
About Nufarm Agriculture Inc.
Nufarm Agriculture Inc. is the Canadian subsidiary of Nufarm Limited, a leading manufacturer, supplier and marketer of crop protection products based in Australia. Nufarm has one of the broadest and fastest growing portfolios which is comprised of proprietary and off-patent branded products. Nufarm products are custom made to suit the diverse Canadian growing conditions. For more information please call our Product Information Line at 1-800-868-5444 or visit our website at www.nufarm.ca.
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