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Help Maximize Your Herbicide Program ROI by Using the Full Labeled Rate

October 30, 2023
weed-free mid-season corn rows treated with timely pre- and post-emergence herbicide applications

Byron, MN. Photo taken August 7, 2020. Weeds steal sunlight, moisture and nutrients from the growing corn crop, so the better you can control weeds, the less yield-robbing competition you’ll have.

As commodity prices fluctuate, applying partial rates of herbicides for corn and soybeans may seem like a viable cost cutting strategy. The truth, however, is that herbicide applications at less than full rate can significantly reduce your return on investment.

It’s been proven that cutting herbicide rates can contribute to weed resistance, but using less than the full, labeled rate can also lead to:

  • More weed seeds and weed outbreaks
  • Competition for nutrients
  • Lower yields
  • Less residual control
  • Reduced control of resistant weeds

To avoid these challenges and get the most out of your herbicide program, make pre- and post-emergence applications at full rates—and at the recommended growth stage indicated on the product labels. If you use partial rates, you’ll only get partial control.

Study Shows Clear Yield Advantage with Early-Post Applications

Because using a post-emergence herbicide with long-lasting residual control can help you manage weeds when they are most vulnerable, timing is critical. In 2020, 1-pass studies across 6 locations demonstrated an over 7 bu/A yield advantage for early-post applications at the full rate.

Graph showing an increased 7 bushels per acre corn yield when Acuron GT herbicide is applied to weeds less than 3 inches compared to weeds over 5 inches

Resistance Management Tips

Weeds depend on routine to survive. That’s why you need to build diversity into your weed management programs to prevent further development of herbicide-resistant weeds. Weed management programs that rely on 1 active ingredient increase the potential for resistant weeds to develop—and make these products ineffective.

Scouting early and using multiple modes of action in your post-emergence herbicide program can prevent weeds from overtaking your glyphosate resistant corn fields. Acuron GT® post-emergence corn herbicide delivers enhanced control of yield-robbing weeds and long-lasting residual because it is the first and only glyphosate premix that contains the unique ingredient bicyclopyrone (BIR).

The powerful combination of 4 active ingredients and 3 sites of action in Acuron GT also helps manage difficult weeds longer into the season, which helps fully protect yield potential and minimize the weed seed bank for next year’s crop.

To learn more about the ultimate post-emergence herbicide, visit SyngentaUS.com/AcuronGT.

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

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.