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How Dicamba Herbicides Can Help Fight Resistance

February 27, 2021
this agronomic image shows soybean rows.

The spread of herbicide resistance is a major challenge for growers, and new technologies are necessary to help delay its onset. Whether resistance has already developed in your fields or you fear that it will soon, we’ve laid out some tips to help you address it this season.

Start Clean with Tillage or an Effective Burndown

A strategy for managing early-season weeds that are especially competitive with young crops is to plant into clean fields. An effective burndown herbicide and practices such as tillage can help you reduce overwintering and early-season weed pressure in your soybeans and cotton.

Use a 2-Pass System with Preemergence and Post-Emergence Herbicides

A 2-pass system of overlapping residual herbicides with multiple effective sites of action can help your fields stay clean throughout the season. It’s also important to apply those herbicides at the full label rates. A partial or incomplete application may only hurt the weed, which could recover and develop resistance to that herbicide.

For an effective full-season herbicide program, use Tavium® Plus VaporGrip® Technology herbicide early post-emergence following Boundary® 6.5 EC, BroadAxe® XC or Prefix® herbicides in dicamba-tolerant soybeans, and Caparol® 4L or Reflex® herbicides in dicamba-tolerant cotton. When used in a preemergence application, Tavium can be followed by Sequence®, Flexstar® GT 3.5 or Prefix herbicides in soybeans.

Choose Herbicides with Multiple Effective Sites of Action

Herbicides with multiple effective sites of action are more difficult for weeds to resist. If you only use a single chemistry, you are unintentionally selecting for resistant weeds. By using mixtures with residuals, you can delay resistance issues.

Reduce the Weed Seed Bank

Another important part of fighting resistance is managing the seed that the weeds in your fields produce and add to the soil each year. Left unchecked, deposits to the seed bank can lead to problems for years to come, especially if a resistant population is able to spread.

Additionally, weed seed found at harvest could lead to dockage at the elevator, so be sure to choose a herbicide program that manages notorious seed producers like Palmer amaranth and waterhemp all season long.

Learn More About Tavium

Tavium can be used preplant, at planting and early post-emergence on dicamba-tolerant soybeans and cotton. A combination of the contact control of dicamba and the residual control of S-metolachlor, Tavium is a convenient premix that manages key ALS-, PPO- and glyphosate-resistant broadleaf and grass weeds, including Palmer amaranth and waterhemp.

Explore the entire Syngenta soybean residual herbicide portfolio with our soybean herbicide program planning tool, which will let you select your seed trait and then view your burndown, preemergence and post-emergence weed management options.

Visit SyngentaUS.com/Tavium or talk to your local Syngenta retailer or sales representative to learn more.

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