OAKVILLE, Man. — Growers can apply dicamba and glyphosate to Monsanto’s Roundup Ready 2 Xtend soybeans at a range of crop stages.
However, the best method is early application, preferably right out of the gate.
“We’ve studied this trait and the different uses of dicamba within the cropping system. We really feel that the maximum benefit comes from applying it just after emergence or preferably … pre-emergence just after you’ve planted,” said Allan Froese, Monsanto Canada’s technology development representative.
“It protects it (the crop) during that critical weed free period, which is anywhere in that V1 to V3 staging…. That’s where we’re seeing the optimum yield, from going in early with dicamba and getting residual control of a lot of weed species.”
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Bruce Murray, a Dekalb agronomist with Monsanto in Manitoba, said there will be restrictions on what type of dicamba is permitted for Xtend soybeans. He said Monsanto will register only low volatility formulations of dicamba to reduce the likelihood of drift.
Monsanto has developed two new herbicide products for its soybean trait: Roundup Xtend, a premix of dicamba and Roundup, and XtendiMax, a straight up dicamba product.
Froese said it’s unlikely growers will apply dicamba more than once.
robert.arnason@producer.com
