History, definition and concept of agroforestry as a land use system; structural, functional, socio-economic and ecological bases of agroforestry; description and analysis of major agroforestry systems and practices and their functions within the farming and forest systems; agroforestry components and their interactions; effect of agroforestry species on soils, nutrient cycling and soil organic matter, role of trees in agroforestry systems, nitrogen fixation and soil conservation; socio-economic aspects of agroforestry; agroforestry evaluation: biological and socio-economic concepts; current methodologies used in agroforestry domain including diagnostic procedures; case studies under Ethiopian conditions.