Biopesticides and botanicals play an important role in insect pest management by their various inhibitory actions on insect physiology, life stages and behaviour. They are best alternative to chemical insecticides against major defoliators on soybean. They are locally available, relatively cheap, biodegradable and easy to handle which enable to minimize input cost of management for major defoliators of soybean and keep balance of ecosystem. As the agriculture shift towards the organic farming, they have much better scope in the pest management tactics.