Sustainable agriculture Food supply 8 Natural resources 7 Sustainable development 7 Agriculture 5 Sustainability 5 Climatic changes 4 Food security 4 Agricultural Economics 3 Agriculture- environmental aspects 3 Alternative agriculture 3 Biodiversity 3 Food industry and trade 3 Natural Resource Economics, (New March 2000) 3 Organic farming 3 Rural development 3 Social Psychology and Social Anthropology, (New March 2000) 3 Soil management 3 Agricultural development 2 Agricultural microbiology 2 Biodiversity conservation 2 Biofertilizers 2 Biotechnology 2 Environmental aspects 2 Environmental monitoring 2 Globalization 2 Humus 2 India 2 Land Resources 2 Plant Production 2