Agricultural Economics 12 Horticultural Economics, (New March 2000) 12 Horticultural Crops, (New March 2000) 9 Plant Production 8 Crop Produce 6 Plant Breeding and Genetics 5 Plant diseases 5 more ... Pathogen, Pest, Parasite and Weed Management (General) 4 Plant disease control 4 Plant pathogens 4 Plant pests 4 Taxonomy 4 Taxonomy and Evolution 4 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 4 Agricultural policy 3 Agriculture 3 Economic aspects 3 International Trade 3 Marketing and Distribution 3 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 3 Pest control 3 Plant Pests, (New March 2000) 3 Plant Propagation 3 Policy and Planning 3 Research 3 Socioeconomics 3 Agricultural development 2 Crop production 2 Cultivars 2 Disease resistance 2 less ...