- Onion is the largest vegetable produced and consumed worldwide, especially in India. - India is the largest producer of onions globally, with Maharashtra, Bihar, Karnataka, Andhra Pradesh, Madhya Pradesh, and Uttar Pradesh being the major producing states. - The main onion varieties exported from India include Pusa Red, Pusa White Round, Arka Pragati, Punjab, Udaipur 101,102, with sizes ranging from 2-6 cm in diameter.