Host Resistance and Immunity 19 Plant Pests, (New March 2000) 15 Plant diseases 15 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 14 Insects 13 Natural enemies 13 Biological control 12 Plant pathogens 12 Plant pests 12 Taxonomy 12 Biological Control 11 Disease resistance 11 Insect control 11 Pathogens, Parasites and Infectious Diseases (Wild Animals), (New March 2000) 11 Pest control 11 Taxonomy and Evolution 11 Epidemiology 10 Horticultural Crops, (New March 2000) 9 Insect pests 9 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 9 Plant disease control 9 Plants 9 Protozoan, Helminth, Mollusc and Arthropod Parasites of Animals, (New March 2000) 9 Host guest relations 8 Pesticides and Drugs; Control, (New March 2000) 8 Social Psychology and Social Anthropology, (New March 2000) 8 Tourism 8 Tourism and Travel 8 Biological control agents 7 Chemical control 7