Farming systems Agricultural Economics 6 Sustainability 5 Food security 4 Plant Cropping Systems 4 Agricultural systems 2 Animal Genetics and Breeding, (New March 2000) 2 more ... Animal Husbandry and Production, (New March 2000) 2 Animal Reproduction and Embryology, (New March 2000) 2 Animal health 2 Climatic changes 2 Crops and climate 2 Ecosystems 2 Extension and Advisory Work 2 Farming systems research 2 Food Economics, (New March 2000) 2 Genetic improvement 2 Growth rate 2 Livestock 2 Meat Producing Animals 2 Meteorology and Climate 2 Natural Resource Economics, (New March 2000) 2 Plant Production 2 Social Psychology and Social Anthropology, (New March 2000) 2 Soil management 2 Sustainable agriculture 2 Water Resources 2 Water resources 2 Adaptability 1 Adaptation 1 less ...