Wheat and barley producers in Western Canada in the Brown and Dark Brown soil zones will have a new tool for broadleaf weed control this growing season with a unique combination of actives that doesn’t have cropping restrictions the following year.
Following recent product registration by the Pest Management Regulatory Agency, Corteva Agriscience is releasing OnDeck herbicide in limited quantities for the 2023 growing season, says Jason Smith, portfolio manager for cereal herbicides.
“It is a new herbicide to western Canadian wheat and barley growers, with a natural fit in the Brown and Dark Brown soil zones,” says Smith.
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“One of the key features of the herbicide, unlike other Group 6 and Group 27 products, is OnDeck does not have cropping restrictions the following year. Farmers can use it this year and then plan to grow peas, lentils or canola the following year.”
OnDeck offers wheat and barley farmers good control of key broadleaf weeds like kochia, wild mustard, wild buckwheat and volunteer canola, and control of green and yellow foxtail.
In particular, OnDeck can effectively deal with herbicide-resistant kochia.
“Across Western Canada we are seeing widespread development of kochia resistant to Group 2 herbicides, as well as an increase in Group 9 (glyphosate) resistance and growing concern over resistance to Group 9 products that contain fluroxypyr and dicamba,” says Smith.
“OnDeck herbicide provides effective control of broadleaf weeds including kochia, and our Group 27 molecule, tolpyralate, has been shown to have much more favourable breakdown in the soil, which means no carry-over. And this is something we have tested extensively to ensure it is safe to use with no cropping restrictions the following year.
“As farmers use OnDeck they retain the ability to plant lentils, peas and canola the year after application — maintaining the rotational freedom and flexibility that is important in the Brown and Dark Brown soil zones of Western Canada.”
Smith also points out that use of OnDeck herbicide provides reduced reliance on the active ingredient fluroxypyr to control kochia, extending the efficacy of herbicides using that active ingredient.
And in the Brown and Dark Brown soil zones, OnDeck can help control foxtail, which would eliminate the need for a graminicide tank-mix partner, potentially shielding farmers from further crop input expenses.
Leading up to product registration, Corteva produced a “modest volume” of product that will be available from about 150 to 200 ag chem retailers this growing season.
“We will be in full production and fully stocked for the 2024 crop year,” says Smith.
OnDeck was developed with an EC (emulsifiable concentrate) formulation, which means it is easily mixed with water. Depending on the weed spectrum, the product can also be tank mixed with a wide range of other herbicides.
Because it is a contact herbicide, it is recommended it be applied at the higher water volume rate of 10 U.S. gallons per acre (about 8.3 imperial gallons per acre).
And when the herbicide is applied under adverse environmental conditions — such as hot, cold or dry conditions — it is recommended an adjuvant, such as methylated seed oil (MSO Concentrate, for example), crop oil concentrates (XA Oil Concentrate, Merge or Carrier, for example), or high surfactant oil concentrates (Journey HSOC, for example), be used.
“Results from western Canadian field trials in 2022 reflected the effectiveness of OnDeck as a reliable weed control tool, with wheat and barley farmers emphasizing the herbicide’s ease of use, fast activity and excellent kochia control,” says Smith.
For more information contact an ag chem retailer or visit the Corteva website at corteva.ca.
