SEASHORE PASPALUM GREEN ESTABLISHMENT AFFECTED BY SPRIG RATES, NITROGEN SOURCES AND RATES
Turf managers in coastal areas and other areas with water restrictions have to manage turfgrass with challenges of reduced water quantity and quality.Seashore paspalum (Paspalum vaginatum Swartz.) may offer an alternative solution since it is known to tolerate poor water quality even sea water as water sources for certain periods of time.However,information on seashore paspalum used as the putting green in inland transition zone is lacking.A 2-year study was conducted to determine the establishment of a ‘Seadwarf’ seashore paspalum putting green with two sprigging rates,three nitrogen (N) sources,and two N rates in the inland transition zone.A study was conducted as a splitsplit block design with three replications at Clemson University in Clemson,South Carolina.Seadwarf was sprigged either at 91 m3 ha-1 or 182 m3 ha-1 on May 17,2007 and repeated on May 16,2008 next to the first year site.Urea,ammonium nitrate,and ammonium sulfate were applied at 22 or 44 kg N ha-1 week-1.These N sources were soluble dissolved in water and applied as a liquid weekly for 10 weeks with a CO2 backpack sprayer followed by a light irrigation with an estimation of 10 to 15 mm to reduce potential of foliar burns.The mowing height was gradually lowered to 3.2 mm in late July and 2.5 mm in early August with a daily mowing frequency.Weekly measurements included percent coverage,turf quality,and color ratings.Samples to determine root mass were collected eight weeks and 16 weeks after sprigging.A significant difference occurred in coverage between high and low sprig rates.The high sprig rate reached 100% coverage and acceptable turf quality within five weeks in comparison with the lower rate which did not occur until seven weeks.High rates of fertility associated with high rates of sprigs produced the best quality and color ratings (greater than 7 consistently for both ratings).Ball roll distance (BRD) greater than 310 cm was found with the lower mowing height of 2.5 mm by using a standard stimpmeter.
ball roll distance (BRD) establishment speed sprigs sprigging warm-season turfgrass
Stiglbauer J.B. H. Liu L.B. McCarty D.M. Park J.E. Toler
School of Agriculture,Forest,and EnvironmentalSciences,Clemson University,Clemson,SC,USA 29634
国际会议
The 12th International Turfgrass Research Conference(第十二届国际草坪学术大会)
北京
英文
251-256
2013-07-14（万方平台首次上网日期，不代表论文的发表时间）