Introduction
World Agroforestry (ICRAF) is a scientific and development centre of excellence dedicated to harnessing the benefits of trees for people and the environment. Drawing on the world's largest repository of agroforestry science and information, we develop knowledge practices from the farmer's field to the global scale to ensure food security and environmental sustainability. ICRAF is the only institution that conducts globally significant agroforestry research across all developing tropical regions. The knowledge generated by ICRAF enables governments, development agencies and farmers to harness the power of trees to make agriculture and livelihoods more environmentally, socially and economically sustainable.