Defoliation effect of Poa ligularis Nees Ap Steudel on aerial biomass production and its components in northwestern Argentinian patagonia

摘要：

Poa ligularis is a native perennial grass that has become a key species for sward management in many local grassland in the Sierras and Mesetas region.Occupies about 35％ ( ＞20 million ha) of the Rio Negro and Neuquen provinces in the semiarid region with 300 mm annual rainfall.This species is considered a good herbage but it is tending to disappear under continuous grazing.Ecophysiological factors that determine its recovery ability after various defoliation frequencies have not yet been estudied.

关键词： defoliation poa ligularis aerial biomass steppe patagonia

作者: Gittins,C. Becker,G.F. Busso,C.A. Siffredi,G.L. Ghermandi,L.G.

作者单位: Instituto Nacionalde Tecnología Agropecuaria,EEA Alto Valle,C.C.782 (8332),Gral.Roca (RN).Argentina, Universidad Nacional del Sur Dpto.de Agronomía.Altos de Palihue.8000 Bahía Blanca(Bs.As.).Argentina Universidad Nacional del Comahue Centro Regional Universitario.Laboratorio Ecotono.(8400).Bariloche

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）