Innovation adoption 11 Agricultural Economics 6 Policy and Planning 6 Extension and Advisory Work 5 Agroforestry 3 Agroforestry and Multipurpose Trees: Community, Farm and Social Forestry 3 Economic aspects 3 more ... Laws and Regulations 3 Plant Cropping Systems 3 Agricultural policy 2 Biotechnology 2 Biotechnology (General), (Revised June 2002) 2 Case studies 2 Cropping systems 2 Erosion: Soil and Water Conservation 2 Field Crops, (New March 2000) 2 Forest policy 2 Forestry Economics, (New March 2000) 2 Horticultural Crops, (New March 2000) 2 Information and Documentation 2 Integrated Pest Management 2 Integrated pest management 2 Pest control 2 Plant Pests, (New March 2000) 2 Plant Production 2 Plant pests 2 Plants 2 Regulations 2 Research 2 Silviculture and Forest Management 2 less ...