Pac Low Plant Growth Regulator

GENERAL INFORMATION

Pac-Low is a plant growth regulator for non-residential turfgrass that reduces growth for up to 2 months after application. The frequency of mowing can be reduced by up to 50% during the period of effective growth reduction. Use Pac-Low on fine turf accompanied by moderate-to-high fertility to maintain turfgrass appearance and reduce discoloration. Growth and development of some grasses (e.g., Poa annua) can be significantly reduced, leading to selective control after prolonged use in mixed populations. Pac-Low results in:

• Slowed vertical growth and reduced mowing for 6-8 weeks on established hybrid Bermuda grass, bentgrass and perennial ryegrass fairways, tees and roughs, and on St. Augustine grass and Kentucky bluegrass/perennial ryegrass turf areas (use reduced rates on bentgrass and over-seeded Bermuda grass greens).
• Improved and extended fertilizer performance for up to 12 weeks when combined with a nitrogen fertilizer while improving turfgrass quality versus fertilizer alone.
• Reduced potential for scalping of all turfgrass areas.
• Better ball playability on hybrid Bermuda grass due to increased turf density and tighter-knit turf areas.
• Suppression of Poa annua by reducing its growth and competitiveness.

Growth suppression of warm-season grasses:

Use Pac-Low on established hybrid Bermuda grass and St. Augustine grass when turfgrasses are actively growing and have recovered from dormancy (i.e., green and filled in fully following winter).

Growth suppression of cool-season grasses:

Apply Pac-Low in spring after green-up and after turf has been mowed once or twice. Apply Pac-Low at least 1 month before onset of high air temperatures. In late summer to early fall, apply Pac-Low at least 1 month before anticipated first killing frost.

Suppression of Poa annua:

Apply Pac-Low when the Poa annua is actively growing. In moderate climates, apply Pac-Low from fall through late spring. In northern climates, spring and fall timings are recommended. In climates with a prolonged winter dormancy, fall applications of Pac-Low can be made up to 1 month prior to anticipated first killing frost. Make repeat applications as part of a Poa annua suppression program.

Color and quality enhancement of winter over-seeded turf and suppression of Poa annua:

Apply Pac-Low after over-seeded turf has successfully established itself (cool-season turf species should be near 85% of turf composition). Do not apply Pac-Low after March 15th to putting greens to avoid delay in Bermuda grass green-up. Moderate soil moisture conditions should be present before and after applications of Pac-Low in order to achieve the best growth regulating effect.