Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry Agroforestry 10 Agroforestry systems 7 Forests and Forest Trees (Biology and Ecology) 5 Silviculture and Forest Management 5 Soil fertility 5 Trees 5 more ... Tropics 5 Forestry Economics, (New March 2000) 4 Forests 4 Soil Fertility 4 Sustainability 4 Biological Resources (Plant) 3 Cropping systems 3 Forests and forestry 3 Grasslands and Rangelands 3 Innovation adoption 3 Land Resources 3 Natural Resource Economics, (New March 2000) 3 Plant Cropping Systems 3 Plants 3 Policy and Planning 3 Research 3 Rural development 3 Social Psychology and Social Anthropology, (New March 2000) 3 Soil Biology 3 Woody plants 3 Agriculture 2 Biodiversity 2 Case studies 2 less ...