Chris Mansiere, an agronomic solutions manager with Bayer, wants to broadcast the message that herbicide resistance is something that just about every grower in Western Canada is dealing or will grapple with at some point.
“I think in the last weed survey, there was 70 per cent of fields that have a resistant weed in there… it’s something that everyone deals with, and it’s very normal,” he says.
Rotating herbicide groups and considering all options available are key to keeping as many tools in a growers’ toolbox for as long as possible, Mansiere explains in this episode of RealAgriculture’s Wheat School. For some growers, that could mean including HPPDs — a Group 27 , paired with a Group 6 product that work in synergy. “So one-plus-one equals five, it’s not just an additive effect,” he says, which can help prolong the time these tools remain useful.
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Mansiere recommends taking a long-term view when it comes to rotation and weed management and not to think in terms of just one year. The history of what has been used in the past to combat certain weeds and crop types that have limited modes of action are going to impact the decisions that a grower will make this year, and in the years ahead.
“We’ve kind of been reactive [in the past]… if you can be proactive, [and] throw in those different modes of action that you haven’t used in the past, it goes a long way to preserve what you already have… because modes of action don’t come along every day,” Mansiere says.
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