Broadleaf weed killers paired against kochia

Syngenta Crop Protection Canada will market two broadleaf herbicides this season as a twin-pack for cereal growers, to use on kochia in particular.

The product, to be called Pulsar, will co-pack the Group 4 herbicides dicamba (also used in products such as Banvel and Target) and fluroxypyr (used in Attain, Altitude FX and others) for use in “all varieties” of spring wheat, durum and barley.

Pulsar is expected to offer “dual-action management for the increasingly problematic form of Group 2-resistant kochia, as well as non-resistant kochia,” Syngenta said in a release Tuesday.

“Kochia is a serious problem for spring wheat, durum and barley growers in the brown and dark brown soil zones,” said Jason Pickering, an agronomic brand manager for Syngenta.

“Kochia spreads incredibly quickly and can have devastating impact if is not controlled effectively. Group 2-resistant kochia is even more challenging.”

“We tend to find that if kochia is resistant to one Group 2 herbicide, it’s likely resistant to other Group 2 herbicides,” said Hugh Beckie, a research scientist studying herbicide resistance for Agriculture and Agri-Food Canada at Saskatoon, in Syngenta’s release.

“We advise growers who have documented or suspected Group 2 resistance to tank-mix the Group 2 herbicide with a different mode of action that controls kochia, or to switch to a different mode of action such as a Group 4 herbicide.”

Pulsar offers a “customizable” rate range and an MCPA tank mix option, as well as a tank mix with Horizon, Syngenta said. Weeds controlled or suppressed with the addition of MCPA include kochia, stinkweed, flixweed, lamb’s-quarters, shepherd’s purse, volunteer canola, wild buckwheat, wild mustard, cleavers and volunteer flax, the company said.

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