Why Use a Strong Soybean Preemergence Herbicide? | The More You Grow | Corteva Agriscience

Why You Need a Strong Soybean Preemergence Herbicide This Season

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Early soybeans

A preemergence herbicide can sometimes make or break your soybean weed control program. For example, if you don’t have the right modes of action to take on the weeds in your fields, it doesn’t matter how many modes of action you apply. And if you have all the right modes of action but no residual activity, you might have weeds that are too far gone by the time you can apply your postemergence herbicide. 

Choosing just the right solution for your operation is key. A powerful combination of the right modes of action and long-lasting residual activity can set you up for the best possible yield potential. 

Kyber Herbicide for Soybeans


Corteva Agriscience brought Kyber herbicide to the market in time for the 2021 growing season and brought with it three effective modes of action in one convenient premix with extended residual control. It’s a powerful preemergence solution for taking on some of the most difficult, herbicide-resistant weeds. 

“Kyber herbicide gives farmers a head-start on their soybean crops with clean fields, leading to maximum yield potential and the potential for more money in their pockets,” says Aaron Smith, U.S. product manager, soybean herbicides, Corteva Agriscience. “Kyber is particularly strong against resistant weeds like waterhemp and Palmer amaranth.” 

One of the modes of action in Kyber is a Group 15 herbicide. Group 15 herbicides are also known as long-chain fatty acid inhibitors. They’re important, because weeds like waterhemp and Palmer amaranth continue to develop resistance to modes of action such as PPO inhibitors and ALS inhibitors. A chemistry with a Group 15 herbicide can help control those weeds and manage resistance. 

“At Corteva, we’re always thinking of ways to make our customers’ jobs easier. We know that farmers continue to struggle with herbicide resistance,” Smith says. “Farmers have also been asking for soybean solutions that include a mode of action from Group 15. Kyber has that Group 15 active ingredient.” 

In addition to these three effective modes of action, farmers have asked for long-lasting residual activity to keep their soybeans clean until it’s time for a postemergence herbicide application. Kyber has that, too. 

“The residual activity in Kyber herbicide lasts four to six weeks. In the right conditions, it can last even longer than six weeks,” Smith says. “We spoke to an Iowa retailer specifically who said his customers saw residual activity past the six-week mark.” 

Don’t Stop at a Preemergence

As stated previously, a preemergence herbicide can make or break your soybean weed control, but it should by no means be the only solution you use each season. Smith recommends applying a burndown in fall and/or early spring with a product such as Elevore® herbicide and following up your preemergence with a timely postemergence application. 

Here’s a look at three of the postemergence solutions Corteva offers: 

  • DuPont EverpreX® herbicide — EverpreX offers farmers the flexibility of a wide application window. The solution can be applied up to 90 days before harvest. EverpreX provides residual control of ALS-, PPO- and glyphosate-resistant weeds like Palmer amaranth and waterhemp. 
  • Enlist One® herbicide — Farmers who grow Enlist E3® soybeans can use Enlist One herbicide. The solution is a straight-goods 2,4-D choline that offers tank-mix flexibility and exceptional weed control designed to land and stay on target. Using Enlist One in a tank mix allows farmers to customize their program to match their weed spectrum. 
  • Enlist Duo® herbicide — Farmers who grow Enlist E3 soybeans can use Enlist Duo herbicide. The solution is a convenient, proprietary blend of 2,4-D choline and glyphosate that delivers strong weed control and helps prevent herbicide resistance. 


Don’t let weeds compete with your soybeans this season. Set your beans up for clean fields and optimum yield potential with a powerful preemergence as part of a weed control program. Talk with your local retailer about the solutions that will work best on your farm. 


The transgenic soybean event in Enlist E3® soybeans is jointly developed and owned by Corteva Agriscience LLC and MS Technologies, L.L.C. Enlist Duo® and Enlist One® herbicides are not registered for sale or use in all states or counties. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your area. Enlist Duo and Enlist One herbicides are the only 2,4-D products authorized for use with Enlist® crops. Consult Enlist herbicide labels for weed species controlled. Elevore®, EverpreX® and Kyber are not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Consult the label before purchase or use for full details. Always read and follow label directions.