It’s no secret that using herbicides with the right active ingredients (AI) can help protect your crop from yield-robbing weeds.

But that’s only part of the equation. Did you know the adjuvants you mix with a herbicide can be just as important as the AIs?

“Adjuvants are a key to managing a variety of weed-control issues, including challenging weather conditions,” said Brad Engh, agronomy sales team leader for MaxYield Cooperative. “The right adjuvant helps your herbicide work more efficiently to kill weeds.”

Some adjuvants help reduce drift. Others help the herbicide reach its target zone more efficiently. As weather conditions get drier, for example, cuticles on plant leaves get thicker. This makes it harder for an AI to penetrate the leaf. An adjuvant like methylated seed oil helps the herbicide droplets penetrate the cuticles on the leaves, so the AI can work properly.

The water in the herbicide tank-mix also influences the need for adjuvants. Some AIs chemically bond with ions in hard water containing calcium and magnesium. Ammonium sulfate (AMS) interrupts this chemical bonding so the AI can function properly and get the job done.

AMS is another useful adjuvant, but on its own it won’t help with drift and deposition. That’s why MaxYield is using Array Link®, an adjuvant that works well with Liberty® herbicide. “Liberty is a contact killer, so you need it to reach all of the weed’s growing points,” Engh said. “Array Link has a blend of ingredients, including milled ammonium sulfate, organic polymers and antifoam to help manage drift and provide better canopy penetration.”

When used with post-emerge herbicides, Array Link helps with:

  • improved spray droplet retention
  • improved spray pattern quality (keeps spray on target)
  • improved canopy penetration (better coverage)
  • improved performance


While growers sometimes know the herbicide they want to use, they are often less familiar with adjuvants. That’s where MaxYield’s agronomy specialists come in.

“As solutions providers, we can help you increase your chances of a successful spray,” Engh said. “We want to set you up for as much success as possible.”•


Contact your local MaxYield agronomy specialist for more details. We look forward to serving you.