PROXY®

ENVIRONMENTAL SCIENCE U.S., LLC · Ethephon 21.7% · EPA Reg 101563-40 · HERBICIDE TERRESTRIAL; PLANT GROWTH REGULATOR Document last checked 2024-07-03

About this product

Active ingredient Ethephon 21.7%

Manufacturer ENVIRONMENTAL SCIENCE U.S., LLC

Category HERBICIDE TERRESTRIAL; PLANT GROWTH REGULATOR

Full details for PROXY®

EPA registration data Reg. 101563-40 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 101563-40 →

Proxy Growth Regulator is a product used for turfgrass growth regulation and the suppression of Poa annua and white clover seedheads. It slows the growth of commercial turfgrasses, including Bentgrass, Kentucky Bluegrass, Perennial Ryegrass, and Tall & Fine Fescue, to reduce mowing frequency and clipping volume. This product is applied outdoors to golf course turf, such as greens, tees, fairways, and roughs, or other commercial turfgrasses.

Pests covered (5)

Poa annua and white clover seedheadsTurfgrass Growth RegulationANNUAL BLUEGRASSWHITE CLOVERPLANT REGULATOR (GROWTH INHIBITOR)

Areas treatable (19)

Golf course turf including Greens, Tees, Fairways, and RoughsGolf course turf including Greens, Tees, Fairways, and Roughs; Commercial Turfgrasses including Bentgrass, Kentucky Bluegrass, Perennial Ryegrass, Tall & Fine FescueBENTGRASS (GOLF FAIRWAYS) (FOLIAR TREATMENT)BENTGRASS (ORNAMENTAL TURF) (FOLIAR TREATMENT)ORNAMENTAL TURF (FESCUE) (FOLIAR TREATMENT)KENTUCKY BLUEGRASS (ORNAMENTAL TURF) (FOLIAR TREATMENT)RYEGRASS (ORNAMENTAL TURF) (FOLIAR TREATMENT)KENTUCKY BLUEGRASS (PARK) (ORNAMENTAL TURF) (FOLIAR TREATMENT)TANK MIXTALL FESCUE (ORNAMENTAL TURF) (FOLIAR TREATMENT)FINE FESCUE (ORNAMENTAL TURF) (FOLIAR TREATMENT)ORNAMENTAL TURF (GOLF COURSE ROUGH) (FOLIAR TREATMENT)ORNAMENTAL TURF (PARKS) (FOLIAR TREATMENT)ORNAMENTAL TURF (GOLF COURSES) (FOLIAR TREATMENT)ORNAMENTAL TURF (GOLF FAIRWAYS) (FOLIAR TREATMENT)ORNAMENTAL TURF (GOLF GREENS) (FOLIAR TREATMENT)ORNAMENTAL TURF (GOLF TEES) (FOLIAR TREATMENT)ORNAMENTAL TURF (FOLIAR TREATMENT)ORNAMENTAL TURF (RYEGRASS) (FOLIAR TREATMENT)

How to treat each type of area 2

Golf course turf including Greens, Tees, Fairways, and Roughs

Target pest	Location	Rate	Unit	Dilution	Label notes
Poa annua and white clover seedheads	Outdoor	5 fl oz	1,000 sq ft	1.0 - 2.0 gal/1,000 sq ft	Make the initial application prior to the emergence of new seedheads. A period of 2-3 weeks after application is required for maximum performance. Repeat applications may be made to predominately Poa annua or white clover sites as needed, but not less than two weeks after the previous application.

Golf course turf including Greens, Tees, Fairways, and Roughs; Commercial Turfgrasses including Bentgrass, Kentucky Bluegrass, Perennial Ryegrass, Tall & Fine Fescue

Target pest	Location	Rate	Unit	Dilution	Label notes
Turfgrass Growth Regulation	Outdoor	5 fl oz	1,000 sq ft	1.0 - 2.0 gal/1,000 sq ft	An application of PROXY GROWTH REGULATOR slows the growth of turfgrasses, thus reducing the required frequency of mowing and the volume of clippings collected. For best turfgrass growth regulation, apply PROXY GROWTH REGULATOR when daytime air temperatures are 65°F and rising. PROXY GROWTH REGULATOR must only be applied once turfgrass mowing heights have been established for the season. Avoid multiple applications of PROXY GROWTH REGULATOR in areas where excessive thatch has accumulated. Reapplication intervals: Kentucky Bluegrass-7 weeks; Perennial Ryegrass-7 weeks; Tall/Fine Fescue-4 weeks; Bentgrass-4 weeks

Mixing instructions 1

For pests	Location	Amount	Per	Label notes
Poa annua and White Clover Seedhead Suppression	Outdoor	5 oz of PROXY GROWTH REGULATOR and 0.125 or 0.25 ounce of Primo MAXX	1,000 sq ft	Tank mixtures of PROXY GROWTH REGULATOR at 5 oz per 1,000 sq ft and Primo MAXX at 0.125 or 0.25 ounce per 1,000 sq ft can be used to promote seedhead suppression as well as turfgrass quality. Multiple applications of the tank mix combination may be needed. The number of applications must not exceed recommendations for rates or timings for either product applied once. Follow the recommendation on each product label for the most restrictive application interval for each turfgrass. Application of this tank mixture during frost periods may cause temporary turf discoloration.

Timing & weather

Make the initial application prior to the emergence of new seedheads.
Repeat applications may be made to predominately Poa annua or white clover sites as needed, but not less than two weeks after the previous application.
For best turfgrass growth regulation, apply PROXY GROWTH REGULATOR when daytime air temperatures are 65°F and rising.
PROXY GROWTH REGULATOR must only be applied once turfgrass mowing heights have been established for the season.
Application of this tank mixture during frost periods may cause temporary turf discoloration.

Use restrictions 4

Do not buffer spray solutions.
DO NOT MIX PROXY GROWTH REGULATOR WITH AMMONIUM THIOSULFATE. SUCH TANK MIXTURES MAY RESULT IN FORMATION OF TOXIC FUMES.
DO NOT EXCEED A MAXIMUM OF 30 OZ OF PROXY GROWTH REGULATOR PER 1,000 SQ FT PER YEAR.
Scalping may occur on creeping bentgrass cultivars after more than 2 applications of PROXY GROWTH REGULATOR for Poa seedhead suppression.