Industrial Agriculture in Industrial Countries and Green Revolution in developing and Poor countries made us mad. It was a opinion that we have solved food problem at last. Soon the dream was broken as it caused Environmental disaster, increase in Pesticide resistant pests and fall of land fertility. Based on the experience Integrated Pest Management was planned and Organic agriculture was encouraged. The book deals with bio-pesticide and bio-insecticide of various kind as tried in many countries. The book also deals about experience of IPM in Latin America, Africa and Asia. Thus the book will be immense Help to researchers, environmentalists and Agriculturists to ensure an eco-friendly world.