Quali-Pro T-Nex Plant Growth Regulator – Trinexapac-Ethyl 12% for Turf Management
Quali-Pro T-Nex (Item 83013998) is a professional-grade turf plant growth regulator (PGR) formulated with trinexapac-ethyl 12% as a micro-emulsion concentrate. T-Nex is the go-to PGR for golf course superintendents, sports field managers, and professional turf care operators who want to reduce mowing frequency, improve turf density, and enhance stress tolerance across both warm-season and cool-season grasses.
Key Features & Specifications
- Active Ingredient: Trinexapac-Ethyl 12%
- Formulation: Micro-Emulsion Concentrate (ME)
- Size: 1 Gallon (128 oz) jug
- Manufacturer Item #: 83013998
- UPC: 072693399884
- EPA Reg. No.: 53883-353
- Dimensions: 7″W × 4.5″D × 11.75″H | Weight: 8.4 lbs
- Reduces mowing frequency and clipping yield
- Improves turf color, density, and uniformity
- Enhances heat, drought, and wear stress tolerance
- Compatible with multiple turf types: Cool-season and warm-season grasses
Use Sites
- Golf courses (fairways, roughs, tees)
- Athletic fields and sports turf
- Sod farms
- Commercial and residential lawns
- Cemeteries and parks
State Restrictions
Restricted use in New York (licensed applicators only). Not for sale in Alaska.
Frequently Asked Questions
Q: What is Trinexapac-Ethyl and how does T-Nex work?
A: Trinexapac-ethyl is a gibberellin biosynthesis inhibitor. T-Nex slows vertical shoot growth by blocking the plant’s ability to produce gibberellin hormones, resulting in slower, more compact turf growth with improved stress tolerance and visual quality.
Q: How does T-Nex compare to Primo Maxx?
A: T-Nex contains the same active ingredient (trinexapac-ethyl 12%) as Primo Maxx but is available at a more competitive price point. It delivers equivalent performance for professional turf management programs.
Q: What grasses can I apply T-Nex on?
A: T-Nex is labeled for use on bermudagrass, zoysiagrass, Kentucky bluegrass, perennial ryegrass, tall fescue, fine fescue, and creeping bentgrass among other turf species. Always consult the label for full use-site and grass-type listings.
Q: How much T-Nex do I need per acre?
A: Application rates vary by grass type and desired growth suppression. Common rates for cool-season turf range from 0.25 to 0.5 oz per 1,000 sq ft (1–2 fl oz per 1,000 sq ft depending on conditions). Refer to the label for precise rates.

