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EPA approves Vexis herbicide granular

February 14, 2019  - By

The U.S. Environmental Protection Agency approved federal registration for Vexis herbicide granular, which will be available for sale in mid-2019.

Based on a new proprietary active ingredient, pyrimisulfan, Vexis is the result of a partnership between PBI-Gordon Corp., Kumiai Chemical Industry Co. Ltd. and its US subsidiary K-I Chemical U.S.A.

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

  • Postemergent control of sedges and kyllinga species, including purple and yellow nutsedge, cockscomb and false green kyllinga.
  • A low-rate, nonphenoxy product, Vexis has exhibited activity against weeds that have developed resistance to ALS-inhibiting herbicides. Application rate is .03-.06 pound AI/acre. Maximum annual rate is .09 pound 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.

The first registered products containing Vexis will be in granular formulation, which will help reduce off-target drift and volatility compared to products currently available. It will be sold in a 2-pound shaker can and in a 35-pound bag. It will be available alone or in combination with other active ingredients.

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