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Herbicide Performance is Clear in Bare-Ground Trials

February 23, 2021

A trial plot at our Yarmouth, IA, Grow MoreTM Experience site highlights a preemergence application of Acuron® corn herbicide on bare ground. Photo taken June 2020.

In 2020 we took a close look at how Acuron and Corvus® herbicides compared in terms of managing the toughest Midwestern weeds. Our Yarmouth, IA, Grow More Experience site included both bare-ground and in-crop trials comparing the 2 herbicides.

This is an important comparison because bare-ground trials have the benefit of removing almost all other weed management factors. In-crop trials face other factors, like the effects of corn plants shading out weeds over time.

The video below shows that in both the bare-ground and in-crop trials, Acuron outperformed Corvus against the toughest IA weeds.

Key Differences Between Acuron and Corvus

  • Acuron offers greater application flexibility than Corvus. Acuron can be applied from 28 days pre-plant, including burndown, up to 12” corn, while Corvus has a much narrower application window and can only be applied up to V2 corn.
  • Acuron delivers greater consistency of weed management than Corvus. Acuron contains 4 active ingredients with 3 effective sites of action, while Corvus only contains 2 active ingredients and 2 sites of action.
    • Of the 2 sites of action in Corvus, 1 has shown to be ineffective in fields with ALS resistance, which could leave growers in many areas relying on a single site of action for weed management.
    • Acuron doesn’t require any tank-mix partners for effective weed management, while Corvus recommends the addition of atrazine for optimal performance.

This chart illustrates how the differences between the 2 herbicides lead to very different levels of weed control.

This chart illustrates how the differences between the 2 herbicides lead to very different levels of weed control.

Superior management prevents weeds from stealing nutrients, water and sunlight needed for growth and grain fill from the crop and leads to higher yield potential, with Acuron outyielding Corvus by about 10.4 bu/A*. Calculate what those extra bushels could mean for your revenue potential.

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All photos and videos are either the property of Syngenta or are used with permission.

Syngenta hereby disclaims any liability for Third Party websites referenced herein.

Performance assessments are based upon results or analysis of public information, field observations and/or internal Syngenta evaluations. Trials reflect treatment rates commonly recommended in the marketplace.

The trademarks or service marks displayed or otherwise used herein are the property of a Syngenta Group Company. All other trademarks are the property of their respective owners.

*Acuron yield advantage range based on 2016 Syngenta and university replicated trials comparing Acuron to Corvus®, Resicore®, SureStart® II and Verdict® applied preemergence at full label rates.

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