Managing herbicide-resistant weeds while controlling tough sedges and kyllingas just got easier: The U.S. EPA has approved Vexis® Herbicide Granular from PBI-Gordon.
Vexis is a selective, post-emergent herbicide that provides excellent control of:
Sedges, Kyllingas, and Rushes:
| Broadleaf Weeds:
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Vexis gives turf professionals an important new tool in managing herbicide resistance. Vexis contains a proprietary new active ingredient, pyrimisulfan, which is in the sulfonanilide chemical class. It is in the Weed Science Society of America’s Group 2 and the Herbicide Resistance Action Committee B class acetolactate synthase (ALS) inhibitors. For example, although Vexis is an ALS-inhibitor, it has exhibited activity against weeds that have developed resistance to other ALS-inhibiting herbicides such as sulfonylureas.
Yellow Nutsedge Trial
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Photo and data courtesy of Virginia Tech Golf Course, 2015. (Click image to enlarge.)
False Green Kyllinga Trial
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Photo and data courtesy of Rutgers University, 2018. (Click image to enlarge.)
Vexis is labeled for use on:
Warm-Season Turfgrasses:
| Cool-Season Turfgrasses:
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Application Sites:
- Golf course tees, fairways, and roughs
- Residential turf
- Commercial
- Parks
- Schools
- Cemeteries
- Sports facilities
- Athletic fields
- Sod farms
Vexis is a low-rate, non-phenoxy, granular product that will be sold in a 2 lb. shaker can or in a 15 lb. bag. It can be applied to either wet or dry turf. The product’s application rate is 4 lb. per 1,000 sq. ft. (174 lb. per acre). Retreatment after 30 days is allowed, but do not apply more than a total of 8.26 lb. per 1,000 sq. ft. per year (360 lb. per acre per year).
