s:493:"TI Community-based agroforestry practices for watershed management in the Philippine uplands: lessons learned from the landcare experience 
AU Agustin M Jr 
AU Sanchez P A J 
AB Mercado and Sanchez Introduction: Upland environments • Most complex, diverse and risk prone agricultural ecosystems • Soil erosion is prevalent resulting to the loss of soil fertility and crop productivity – 50-350 tons of topsoil lost annually per hectare – 200-500 kgs annual yield loss per hectare 
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