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Got Palmer amaranth? New liquid form of Valor coming in 2017Got Palmer amaranth? New liquid form of Valor coming in 2017

Valent anticipates a liquid form of Valor for the spring growing season to help growers fight Palmer amaranth and waterhemp.

Mindy Ward

September 13, 2016

2 Min Read

They are like curse words to many farmers in the Midwest--Palmer amaranth and waterhemp. These two tough weeds continue to pose problems for growers. However, next year there is another tool to help control these weeds before they emerge.

Valor EZ is a liquid formulation of Valor that will be available in spring 2017. According to Eric Miller, marketing manager Valent, the company anticipates approval for next year. "It has all the benefits of flumioxazin, along with the residual control for tough weeds."

How big is the problem?


Waterhemp and Palmer amaranth are quick to grow and take ahold of fields. Waterhemp will grow 1- to 1¼-inches per day, while Palmer amaranth will put on 1½- to 2-inches of growth per day.

Growing this quickly makes management difficult. Three to four inches is the maximum controllable height for any herbicide on both weeds.

In the Midwest, waterhemp emergence begins in late April. Palmer amaranth starts showing up in early-May. It takes just three weeks for Palmer amaranth to go from emergence to flowering and with the number of seeds both weeds produce, it is hard for farmers to knock them down. Adding to the problem is that both weeds remain actively growing through the first frost, which often does not happen until November.

Miller says farmers need to focus on an early, clean start to weed protection. The new Valor EZ is a pre-emergent herbicide that provides that lingering weed control.

Why the new formulation?

The new Valor EZ offers all of the benefits of Valor in dry form, but with an easier mixing experience.

"Growers will see that same 4 to 6 week control for Palmer amaranth and waterhemp," Miller notes. And the transition from dry to liquid is simple. "With the dry formulation of Valor in the past it was 2 ounces per acre, now with spraying it is 2 fluid ounces per acre. It is easy for retailer or grower."

Since Valor EZ will be a new herbicide on the market, Miller says farmers will want to preorder to ensure availability. "You want to have it in place in time for next year's growing season." He adds it is just one more tool for farmers to combat those hard to kill weeds, , plus it will be an ideal mixing partner once the Roundup Ready® Xtend Crop System.

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.

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