Colocasia(Colocasia esculenta) is a crop of tropical and sub-tropical regions and requires a warm humid climate. Under rainfed conditions, it requires a fairly well distributed rainfall around 120-150 cm during the growth period. Well-drained soil is suitable for uniform development of tubers. Colocasia or taro is an herbaceous plant with thick tuber (underground stem) containing a lot of starch; cultivated for food for many centuries. All the plant parts i.e., leaves, petioles, corms and cormels are eaten in some or other parts of north eastern region. It is a rich source of carbohydrates, minerals and vitamins. Starch is the main constituent of carbohydrate in colocasia. The peel contains non-starchy material and can be used as feed. The calcium oxalate varies from 0.1 to 0.4% on fresh weight basis. It must be cooked to destroy the acrid crystals of calcium oxalate found in all parts of the plant.