Establishment and effects on soil and pasture of diverse arrangements of Acacia decurrens,Acacia melanoxylon and Alnus acuminata as silvopasture systems in the high tropic in Colombia

摘要

With the introduction of trees species into grass pastures, some of the expected benefits are : erosion control, enhancement of soil chemical characteristics, more efficient utilization of the available water and increased microbial activity in shaded areas.If management factors and environmental conditions allow these effects to occur, there will also be increased availability of forage and crude protein in the system, particularly in drier periods (Carvalho et al,2002).The objective of this study was to evaluate dasometric measures during establishment period and initial effects on soil and the availability and quality of grass in two arrangements : live fences and tree dispersed in pasture in the high tropic in Colombia.