DROUGHT STRESS

摘要

THE NEMESIS OF ANNUAL MEADOW-GRASS How to successfully manage soil moisture levels to manipulate grass species. Greenkeepers and agronomists alike have long observed this fact: increased soil moisture = increasing annual meadow-grass (Poa annua).It isprobably fair to say that the advent of installing automatic irrigation into greens as standard practice saw the grass species composition convert away from fescues and bents to the now dominant species, annual meadow-grass. An STRI survey of grass species composition in UK greens in 1995 recorded that the majority of greens contained over 60% annual meadow-grass (Ref: Baker, Binns, Hind, Lodge & Hunt (1995) J. Sports Turf Res. Inst. Vol. 71.)