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EPA Approves New Vexis Herbicide Granular
The new herbicide from PBI-Gordon offers dependable control of sedges and kyllinga species.

For Immediate Release

January 23, 2019

PBI-Gordon Corporation announces that the U.S. Environmental Protection Agency (EPA) recently approved Federal registration for Vexis Herbicide Granular. It will be available for sale in mid-2019.

Based on a new proprietary active ingredient, Pyrimisulfan, Vexis is the result of an exclusive partnership between PBI-Gordon Corporation, Kumiai Chemical Industry Co., Ltd. and their US subsidiary K-I Chemical U.S.A Inc.

Vexis is formulated for use on residential and commercial sites, sports facilities, and golf course tees, fairways, and roughs. Primary features include:

  • Excellent post-emergent control of sedges and kyllinga species, including purple and yellow nutsedge, cockscomb, and false green kyllinga.
  • A low-rate, non-phenoxy product, Vexis has exhibited activity against weeds that have developed resistance to ALS-inhibiting herbicides. Application rate is .03 to .06 lbs AI/Acre. Maximum annual use rate is .09 lbs AI/Acre. Retreatment after 30 days is allowed.
  • Vexis can be used on a wide variety of cool- and warm-season turfgrasses: Kentucky bluegrass, fine and tall fescues, perennial ryegrass, bentgrass, Bermudagrass, bahiagrass, buffalograss, kikuyugrass, seashore paspalum, St. Augustinegrass (including improved varieties), and zoysiagrass.

According to Don Chew, president and CEO of PBI-Gordon Corporation, "PBI-Gordon has had steady growth through the years attributed to launching new products The first registered products containing Vexis will be in a granular formulation, which will help reduce off-target drift and volatility compared to products currently available. It will be sold in a 2-lb. "shaker" can and in a 35-lb. bag. It will be available alone or in combination with other active ingredients.

For more information on Vexis, click here.

About Kumiai Chemical Industry Co., Ltd.
Founded in 1949, Kumiai Chemical Industry Co., Ltd. established their business when the agricultural chemical industry entered the modern area. Kumiai Chemical is proud to have developed and supplied Japan's first agricultural chemical and has since grown into a well-established researched-based life science and chemical company, which discovers, develops and markets agrochemical products in more than 50 countries. Pyrimisulfan will be manufactured by the former Ihara Chemical Industry Co., Ltd., which merged with Kumiai Chemical in 2017. In the US, Kumiai Chemical is represented by their subsidiary company, K-I Chemical U.S.A. Inc. For more information, visit

About PBI-Gordon
With a line of herbicides, insecticides, fungicides, growth regulators and other products, PBI-Gordon Corporation is a national leader in the professional turf and ornamental management industry. The company also develops and markets products for the consumer lawn, garden, and farm and ranch markets, as well as animal health and grooming products for consumers and veterinarians. Based in the Kansas City metro area, PBI-Gordon has been in business since 1947, and is 100 percent employee-owned. For information on PBI-Gordon, visit or call 800-884-3179.

Tom Mentzer
Mentzer PR Group (for PBI-Gordon)
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