Missouri Ruralist logo

Bayer’s new herbicide controls grass in cornfields

Trivolt offers three modes of action to help combat herbicide-resistant weeds.

Mindy Ward, Editor, Missouri Ruralist

March 29, 2023

2 Min Read
rows of young corn with farm in background
NO GRASS: Bayer has a new herbicide on the market that will keep grass and weeds out of corn rows. Trivolt offers residual control for up to eight weeks despite the weather. Willard/Getty Images

A new preemergence corn herbicide from Bayer offers three different sites of action to control grass and broadleaf weeds. Combine it with atrazine and John Buol, technical manager for select herbicides for Bayer Crop Science, says farmers have four modes of action and a herbicide-resistance management tool.

One of the largest issues facing crop farmers is weed resistance, according to Buol, particularly with Palmer pigweed and waterhemp. Bayer’s new Trivolt herbicide offers a management solution with ingredients from three different site-of-action groups.

Buol outlines unique benefits from each:

Thiencarbazone-methyl. This is a Group 2 low-use-rate herbicide for corn. In the Trivolt chemistry, thiencarbazone makes up just 0.23 pound of active ingredient per gallon while offering a strong residual element for weed control, according to Buol.

Flufenacet. This Group 15 herbicide may not be familiar to farmers. “It’s going to add residual control of grasses and small-seeded broadleaf weeds,” Buol says. “And the flufenacet hangs around quite well with a lot of rain.”

Isoxaflutole. This Group 27 herbicide triggers reactivation with as little as a half-inch of rain. Buol says this gives farmers some reach-back control of weeds.

“What we’ve seen with our internal trial efforts with Trivolt is a consistently high level of weed control across a variety of weather conditions,” Buol adds.

At 56 days after preemergence application of Trivolt plus a pound of atrazine, researchers found 95% control of broad-spectrum weeds. Taking the broadleaves and looking only at the narrowleaf data, Buol found 94% control.

table listing weeds contolled by Trivolt herbicide

Trivolt is applied preplant or preemergence at planting, but Buol adds there is some ability to go out postemergence at V2 corn. It can be either a one- or two-pass herbicide program.

While Buol recommends tank-mixing with atrazine as a herbicide-resistance tool, Trivolt can also be mixed with DiFlexx or Roundup.

Read more about:


About the Author(s)

Mindy Ward

Editor, Missouri Ruralist

Mindy resides on a small farm just outside of Holstein, Mo, about 80 miles southwest of St. Louis.

After graduating from the University of Missouri-Columbia with a bachelor’s degree in agricultural journalism, she worked briefly at a public relations firm in Kansas City. Her husband’s career led the couple north to Minnesota.

There, she reported on large-scale production of corn, soybeans, sugar beets, and dairy, as well as, biofuels for The Land. After 10 years, the couple returned to Missouri and she began covering agriculture in the Show-Me State.

“In all my 15 years of writing about agriculture, I have found some of the most progressive thinkers are farmers,” she says. “They are constantly searching for ways to do more with less, improve their land and leave their legacy to the next generation.”

Mindy and her husband, Stacy, together with their daughters, Elisa and Cassidy, operate Showtime Farms in southern Warren County. The family spends a great deal of time caring for and showing Dorset, Oxford and crossbred sheep.

Subscribe to receive top agriculture news
Be informed daily with these free e-newsletters

You May Also Like