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  • 2 lb. shaker can

  • 15 lb. bag

Vexis® Herbicide Granular

A powerful new weapon against sedges and kyllingas

What it is

Vexis® Herbicide Granular uses the proprietary new active ingredient pyrimisulfan to deliver exceptional control of sedge and kyllinga species, plus listed broadleaf weeds. The granular formulation reduces the potential for drift or off-target application, and it can be applied to wet or dry turf. And Vexis is labeled for use on listed cool-season and established warm-season turfgrasses, including improved varieties of St. Augustinegrass.

What it does

Vexis controls:
  • Nutsedge (purple and yellow)
  • Kyllingas (cockscomb, green, false green)
  • Common chickweed
  • Hairy bittercress
  • Henbit
  • Buckhkorn plantain
  • Dollarweed
  • Other labeled broadleaf weeds
Labeled for use on:
  • Bahiagrass
  • Bentgrass (mowed over ½ inch)
  • Bermudagrass (common and hybrid)
  • Buffalograss
  • Fine and tall fescues
  • Kentucky bluegrass
  • Perennial ryegrass
  • St. Augustinegrass
  • Others as listed
Ideal for use on:
  • Golf course tees, fairways, and roughs
  • Residential turf
  • Commercial
  • Parks
  • Schools
  • Cemeteries
  • Sports facilities
  • Athletic fields
  • Sod farms

* Pending state registration

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Product Type

Selective Herbicide

Sizes

2 lb. shaker can, 15 lb. bag

TBD

RESOURCES

Video

FAQs

What is the class chemistry for Vexis?
Vexis, the trade name for pyrimisulfan, is in the sulfonanilide chemical class.

What is the mode of action for Vexis?
Vexis is an ALS inhibitor. It inhibits acetolactate synthase, the enzyme common to the biosynthesis of the branch-chain amino acids. Research has shown, however, that Vexis may have activity against weeds that have developed resistance to other ALS-inhibiting herbicides, such as sulfonylureas (SU's).
What resistance management groups does Vexis belong to?
Vexis is in Weed Science Society of America (WSSA) Group 2 and Herbicide Resistance Action Committee (HRAC) B class ALS inhibitors.
Is Vexis a phenoxy product?
No, Vexis is a non-phenoxy, low-rate herbicide.
What weeds does Vexis control?
Sedges, Kyllingas, and Rushes:
  • Yellow nutsedge
  • Purple nutsedge
  • Annual sedges (including ALS-resistant sedges)
  • Cockscomb kyllinga
  • Green kyllinga
  • False green kyllinga
  • Path rush
Broadleaf Weeds:
  • Buckhorn plantain
  • Common chickweed
  • Dollarweed (pennywort)
  • False dandelion
  • Florida betony
  • Ground ivy
  • Hairy bittercress
  • Henbit
  • Virginia buttonweed
What turfgrass species is Vexis labeled for use on?
Warm-Season Turfgrasses:
  • Bermudagrass (common or hybrid)
  • Bahiagrass
  • Buffalograss
  • Centipedegrass
  • Kikuyugrass
  • Seashore paspalum
  • St. Augustinegrass (including improved varieties, such as floratam and bitterblue)
  • Zoysiagrass
Cool-Season Turfgrasses:
  • Bentgrass (mowed over ½ inch)
  • Fine and tall fescues
  • Kentucky bluegrass
  • Perennial ryegrass
Where can Vexis be applied?
Vexis is labeled for use on:
  • Golf course tees, fairways, and roughs
  • Residential turf
  • Commercial
  • Parks
  • Schools
  • Cemeteries
  • Sports facilities
  • Athletic fields
  • Sod farms
Does Vexis need to be watered in?
Vexis can be applied to wet or dry turf. For best results, water in granules within 48 hours of treatment.
What is the application rate?
The label rate of Vexis is 2.5 – 5.5 lb. per 1,000 sq. ft. (100 – 240 lb. per acre). Retreatment after 30 days is allowed, up to 8.26 lb. per 1,000 sq. ft. per year (360 lb. per acre).
What type of formulation is Vexis?
Vexis is a granular formulation, which helps reduce off-target drift and volatility.
What is the maximum annual use rate for Vexis?
8.26 lb. per 1,000 sq. ft. (360 lb. per acre).
What is the reseed interval?
Wait to reseed or resod until after 21 days following application.

FAQs

What is the class chemistry for Vexis?
Vexis, the trade name for pyrimisulfan, is in the sulfonanilide chemical class.

What is the mode of action for Vexis?
Vexis is an ALS inhibitor. It inhibits acetolactate synthase, the enzyme common to the biosynthesis of the branch-chain amino acids. Research has shown, however, that Vexis may have activity against weeds that have developed resistance to other ALS-inhibiting herbicides, such as sulfonylureas (SU's).
What resistance management groups does Vexis belong to?
Vexis is in Weed Science Society of America (WSSA) Group 2 and Herbicide Resistance Action Committee (HRAC) B class ALS inhibitors.
Is Vexis a phenoxy product?
No, Vexis is a non-phenoxy, low-rate herbicide.
What weeds does Vexis control?
Sedges, Kyllingas, and Rushes:
  • Yellow nutsedge
  • Purple nutsedge
  • Annual sedges (including ALS-resistant sedges)
  • Cockscomb kyllinga
  • Green kyllinga
  • False green kyllinga
  • Path rush
Broadleaf Weeds:
  • Buckhorn plantain
  • Common chickweed
  • Dollarweed (pennywort)
  • False dandelion
  • Florida betony
  • Ground ivy
  • Hairy bittercress
  • Henbit
  • Virginia buttonweed
What turfgrass species is Vexis labeled for use on?
Warm-Season Turfgrasses:
  • Bermudagrass (common or hybrid)
  • Bahiagrass
  • Buffalograss
  • Centipedegrass
  • Kikuyugrass
  • Seashore paspalum
  • St. Augustinegrass (including improved varieties, such as floratam and bitterblue)
  • Zoysiagrass
Cool-Season Turfgrasses:
  • Bentgrass (mowed over ½ inch)
  • Fine and tall fescues
  • Kentucky bluegrass
  • Perennial ryegrass
Where can Vexis be applied?
Vexis is labeled for use on:
  • Golf course tees, fairways, and roughs
  • Residential turf
  • Commercial
  • Parks
  • Schools
  • Cemeteries
  • Sports facilities
  • Athletic fields
  • Sod farms
Does Vexis need to be watered in?
Vexis can be applied to wet or dry turf. For best results, water in granules within 48 hours of treatment.
What is the application rate?
The label rate of Vexis is 2.5 – 5.5 lb. per 1,000 sq. ft. (100 – 240 lb. per acre). Retreatment after 30 days is allowed, up to 8.26 lb. per 1,000 sq. ft. per year (360 lb. per acre).
What type of formulation is Vexis?
Vexis is a granular formulation, which helps reduce off-target drift and volatility.
What is the maximum annual use rate for Vexis?
8.26 lb. per 1,000 sq. ft. (360 lb. per acre).
What is the reseed interval?
Wait to reseed or resod until after 21 days following application.

Video

Plot Comparisons

False Green Kyllinga Control – Rutgers University, 2018

Untreated Control


175 lb./A followed by 175 lb./A (applied on June 7 and July 3)

Photos taken July 26, 2018

Trial Data

DAT: Days After Treatment  /  DAIT: Days After Initial Treatment  /  DAST: Days After Second Treatment  /  fb: followed by

Yellow Nutsedge Control – University of Maryland, 2018 and Virginia Tech, 2015

University of Maryland, 2018


Untreated Control


175 lb./A (applied on June 18)

Photos taken on July 6, 2018

Virginia Tech Golf Course, 2015


Application Date: June 12, 2015

 


Photo taken July 2015

 

DAT: Days After Treatment  /  DAIT: Days After Initial Treatment  /  DAST: Days After Second Treatment  /  fb: followed by

FEATURED ARTICLE

PBI-Gordon Corporation announces that the U.S. Environmental Protection Agency (EPA) recently approved Federal registration for Vexis® Herbicide Granular.

Resources to Display Value:None 4 Show Plots:1 Show Article:1 Show Custom:0

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