s:571:"TI Nitrogen Facilitation and Competition in Timber tree - Maize Agroforestry System 
AU Cadisch G 
AU van Noordwijk, M. 
AU Mercado Jr A R 
AB Soil erosion is major problem limiting availability of nitrogen and other nutrients for crops on sloping lands in Southeast Asia. Integrating timber trees on croplands as count or hedgerows to control soil erosion, increase income to farmers, and improve environmental services such as biodiversity, water quality and carbon sequestration. Timber based contour hedgerow is now thought to be viable option for smallholders 
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