Plant functional groups composition associated to management practices in temperate natural grasslands(Flooding Pampa,Argentina)
Introduction The natural grasslands of the Flooding Pampas are characterized by a yearlong coexistence of C3 and C4 species.In the last decade there was a 2-fold increase in stocking rates above the historical levels as a consequence of the agricultural pressure.In addition,a technique called.annual ryegrass promotion is being fostered to increase cool season herbage production.It is based on prescribed applications of glyphosate for removing the interference of C4 vegetation to the establishment of over-sown or seed-bank resident.annual ryegrass At present,there is concern about the impacts of both driving forces for the ecosystem function.Our purpose was to carry out a vegetation inventory to diagnose the status of representative grassland types as related to the degree of modification generated by grazing and by the intensity of promotion.
C3/C4 species Flooding Pampa glyphosate stocking rate temperate natural grasslands
Agnusdei M.G Fernández O Colabelli M Vázquez P Vignolio O Fernández Grecco R.C
Instituto Nacionalde Tecnología Agropecuaria (INTA) Fac.Ciencias Agrarias,Univ.Nac.Mardel Plata.CC 276.7620 Balcarce.Argentina
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）