Agricultural pests 20 Biological control of pests--agriculture-- Pest control 15 Biological control 6 Pest control 5 Biological Control 4 Natural enemies 4 Plant Pests, (New March 2000) 4 Plant pests 4 Agricultural pests - India 3 Insect pests 3 Integrated control 3 Agricultural biotechnology 2 Animal Ecology 2 Behaviour (Wild Animals), (New March 2000) 2 Biological control agents 2 Biological pest control agents 2 Chemical control 2 Field Crops, (New March 2000) 2 Horticultural Crops, (New March 2000) 2 Integrated Pest Management 2 Integrated pest management 2 Mollusks 2 Natural pesticides 2 Pathogens 2 Pest management 2 Pesticides 2 Pesticides and Drugs; Control, (New March 2000) 2 Plant biotechnology 2 Plants 2 Predators 2