With Erebus Xtreme, farmers may address herbicide resistance concerns while also avoiding rotational crop limits.
Herbicide-resistant wild oats are one of the worst weeds for Prairie farmers to deal with, as they’ve spread across Western Canada. Rotating active ingredients is one of the most effective strategies to tackle herbicide resistance, which is why Syngenta has released Erebus Xtreme, a new cross-spectrum herbicide aimed at helping cereal growers control herbicide-resistant wild oats.
In a pre-mixed liquid formulation, Erebus Xtreme combines two active substances, pyroxsulam (Group 2) and fluroxypyr (Group 4). It’s approved for use in wheat, winter wheat, and durum crops, and it’ll be available this spring at western Canadian ag stores.
“Erebus Xtreme is an excellent addition to Syngenta’s extensive cereal herbicide portfolio, demonstrating our commitment to bringing products to market that satisfy our customers’ needs.”
- Mechanism of Action (MOA): Acetolactate Synthase (ALS) or Acetohydroxy Acid Synthase (AHAS) Inhibitors 
- CAS RN:422556-08-9
- Indication: HERBICIDE
- Pyroxsulam is a post-emergence herbicide intended for control of a wide spectrum of grass and broadleaf weeds in wheat by ground or aerial application
- IUPAC:2-(4-amino-3,5-dichloro-6-fluoropyridin-2-yl)oxyacetic acid
- Mechanism of Action (MOA): Fluroxypyr induces auxin-type responses in susceptible annual and perennial broadleaf weeds (auxin being a type of plant growth hormone).
- CAS RN: 69377-81-7
- Indication: HERBICIDE
- Fluroxypyr is an herbicide in the class of synthetic auxins.
- It is used to control broadleaf weeds and woody brush
It’s another useful tool for cereal farmers looking for various chemistries to combat herbicide-resistant weeds, according to Baer. “If (cereal growers) are having problems with Group 1-resistant wild oats, they should consider Erebus Xtreme to assist control those resistant biotypes,” he says. “Pyroxsulam, the active ingredient in Erebus Xtreme, is a Group 2 active ingredient that would control those Group 1-resistant wild oats.”
While Erebus Xtreme should not be used where farmers are having problems with Group 2-resistant wild oats, Baer notes there are other Syngenta products with other actives they can use instead.”They might use one of our other products, such as Axial or Traxos in our portfolio, to control those weeds.” We’ve now given growers the option to employ any method they want.
Controls the growth of Japanese brome
Japanese brome, an invasive species found predominantly in the brown and dark brown soil zones of southern Saskatchewan and Alberta, is another key weed targeted by Erebus Xtreme.
“Japanese brome isn’t as common as wild oats across the West,” Baer says, “but it’s definitely a weed growers are attempting to control across the (southern Prairies).”
“We didn’t have a brand that controlled Japanese brome, so we looked at creating Erebus Xtreme to provide producers with a Syngenta product to control that specific driving weed on their farms.”
Other difficult grass and broadleaf weeds, such as kochia, wild buckwheat, cleavers, and hemp-nettle, can be managed using the herbicide, which can be treated from the four-leaf stage up to flag leaf emergence.
According to Baer, the Erebus Xtreme label does not have any recropping restrictions, which means farmers can seed most of the major crops cultivated in Western Canada in fields where the herbicide was administered the previous year. “We can offer a convenient cross-spectrum solution for producers who want to manage resistance without jeopardising their crop rotation the following year,” says the company.
According to Baer, extensive testing were conducted in Alberta, Saskatchewan, and Manitoba to assess how Erebus Xtreme performs in various environmental circumstances and weed pressures.
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