Plant growth regulator on turf management

Abstract

Prohexadione-calcium is used to control growth of turfgrasses and contributes to labor saving of mowing. It also has additional effects on turfgrass growth and development, increasing shoot number and root biomass and improving drought tolerance. Poa annua L, the most troublesome weed in the turfgrass management, affects the quality of turf by seed heading in putting greens. Bispyribac-sodium inhibits the seed-heading of P. annua and keeps putting quality favorable on the greens. Benzylaminopurine (BA) also suppresses the seed-heading of P. annua and its effect is synergistically enhanced by tank-mixing with ethephon. BA also has a protective effect against Halo blight in creeping bentgrass.