The effect of aspect on persistence of several perennial grass species
Areas of the high rainfall zone (>600mm, average annual rainfall zone, AAR) of southern Australia have landscapes with variable topography.Dactylis glomerata, Phalaris aquatica, Lolium perenne and Festuca arundinacea are the main perennial grass species used in pasture of this region.Pasture establishment costs have been estimated at ＄ 230/ha with a minimum of 12 years required to recoup costs (Scott and Keys, 2007).Therefore it is important that pastures species chosen for use are persistent.Varieties of D.Glomerata, P.Aquatica and F.Arundinacea differ in their level of summer dormancy and this has been shown to affect persistence ( Hackney et al., 2006 ).While New ealand research ( Radcliffe, 1982) has shown significant differences in pasture production, and microclimate due to variation in topography, this area of research has been overlooked in Australia.The aim of this study was to assess the persistence of D.glomerata, P.aquatica, F.arundinacea and L.perenne cultivars on two aspects of a hill paddock.
aspect Dactylis Phalaris Festuca Lolium microclimate
B.Hackney B.Dear C.Rodham G.Dyce G.Li
NSW Department of Primary Industries,Private Mail Bag,Pine Gully Rd,Wagga Wagga,NSW 2650,Australia
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）