Plant Pests, (New March 2000) 49 Plant pests Pest control 31 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 25 Plant diseases 23 Horticultural Crops, (New March 2000) 22 Insect pests 20 Insects 20 Natural enemies 20 Plant Breeding and Genetics 19 Taxonomy 19 Biological Control 18 Biological control 17 Plant Production 17 Crop Produce 16 Plant pathogens 16 Taxonomy and Evolution 16 Biological control agents 13 Crop production 12 Insect control 12 Nematoda 12 Plant Physiology and Biochemistry 12 Plant parasitic nematodes 12 Weeds 11 Food Composition and Quality 10 Pathogens, Parasites and Infectious Diseases (Wild Animals), (New March 2000) 10 Pesticides and Drugs; Control, (New March 2000) 10 Plant disease control 10 Plants 10 Weeds and Noxious Plants 10