Biological control Natural enemies 31 Biological Control 29 Pest control 26 Plant Pests, (New March 2000) 19 Biological control agents 17 Plant pests 17 Insect pests 16 Chemical control 12 Cultural control 11 Environmental Pest Management 11 Insects 11 Plant pathogens 11 Taxonomy and Evolution 11 Insecticides 10 Pathogens 10 Pathogens, Parasites and Infectious Diseases (Wild Animals), (New March 2000) 10 Pesticides and Drugs; Control, (New March 2000) 10 Plant diseases 10 Taxonomy 10 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 10 Weeds 10 Insect fossils 9 Integrated Pest Management 9 Animal Ecology 8 Entomopathogens 8 Fungi 8 Insect control 8 Weeds and Noxious Plants 8 Horticultural Crops, (New March 2000) 7