ABSTRACT
Onion is a popular bulb vegetable crop in temperate, tropical, and sub tropical regions. Both immature and mature bulbs are eaten raw, cooked, or used in the preparation of different vegetable dishes. The green leaves are also used in salads, and cooked as a vegetable. Onion contains high amounts of carbohydrates, calcium, phosphorus, vitamins A and B, and the volatile substance allyl propyl disulphide. Onion has medicinal value in that it pos sesses antibacterial properties.
