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Your Checklist for Controlling 2021 Corn and Soybean Weeds

October 12, 2020
this agronomic image shows soybeans

Even though this year’s growing season is still in motion, it’s already time to start thinking about what you might need to do differently next season to maximize your yield potential. Every season brings its own challenges, but it’s important to remember that a few principles of weed management will always hold true:

  • Full use rates are crucial. Cutting rates can reduce the efficacy of the herbicides, which can lead to costly resprays and future problems with weeds.
  • Preemergence herbicides are a necessary part of any weed management strategy, even in seasons with later planting.
  • In the spring, some areas may have weeds that are already too tall for herbicide applications. In this instance, tillage followed by a preemergence herbicide would be a sound strategy.
  • 2-pass applications are important for controlling the toughest weeds and fighting herbicide resistance.

To help with your 2021 weed management planning, we’ve put together this checklist of factors you should consider. How many can you check off? 

  • Scout your fields all season long this year and identify the weeds that you see. Use this information to determine which herbicides and sites of action you’ll need next year to control the species present on your farm.
  • Prevent this year’s late-season weeds from going to seed and producing next year’s weeds. This can be accomplished by applying a fall burndown, mowing or hand-pulling any weeds you find.
  • Utilize cover crops in fields that are not being used over the winter.
  • Clean harvesting equipment between fields to prevent spreading any weed seeds from one field to others.
  • Read and understand all herbicide labels on the products you plan to use. Your retailer or local Syngenta representative will be happy to assist you.
  • Maintain records of the herbicides you have used and the results you saw to pinpoint the program that will provide the most benefit. Your retailer and Syngenta representative can help with this, too.

Herbicide Solutions for Next Season

In corn, we recommend Acuron® herbicide. Acuron contains 4 active ingredients (AIs), including the unique component bicyclopyrone, and 3 effective sites of action. Bicyclopyrone works with the other AIs in Acuron to provide powerful weed control, longest-lasting residual and proven crop safety to enable Acuron to better protect corn from tough, yield-robbing weeds. Lower weed competition leads to more bushels and more revenue potential, and when used in a preemergence application at full label rates, Acuron helps you find 5-15 more bushels an acre than any other corn herbicide.*

Calculate how much more potential revenue you could earn with an extra 5-15 bu/A.

For dicamba-tolerant soybeans, we recommend Tavium® Plus VaporGrip® Technology herbicide, the market’s first residual dicamba herbicide premix. Through 2 effective active ingredients – dicamba and S-metolachlor – Tavium provides both contact and residual control to manage the weeds you see and help protect against the weeds you don’t see yet. This powerful combination provides up to 3 weeks longer residual control than dicamba alone.

The Syngenta soybean herbicide preemergence portfolio also includes Boundary® 6.5 ECBroadAxe® XCPrefix® and Sequence® herbicides, for effective weed control across a range of geographies, soil types and trait systems. Sequence and Prefix are also available for post-emergence application and are effective tank-mix partners.

Visit ResistanceFighter.com, or talk to your local retailer or Syngenta sales representative about knocking out tough and resistant weeds in your area next year.

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*Acuron yield advantage range based on 2016 Syngenta and University trials comparing Acuron to Corvus®, Resicore®, SureStart® II and Verdict® applied preemergence and at full label rates. For more information on Acuron versus an individual product, ask your Syngenta representative.

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