Onion (Allium cepa) is a popular vegetable grown for its pungent bulbs and flavorful leaves. Onion are consumed raw, boiled, fried or as pickle. Also used in medicines and as a flavouring agent. It is widely grown throughout the world. Onions are native to Asia and the Middle East and have been cultivated for over five thousand years. The world produces around 500-550 lakh tons of onion annually. World production stood at 579 lakh tons from an area of 31.80 lakh hectares in 2005

Sapota (Achras zapota L.) popularly known as chikoo is an evergreen, growing and flowering almost throughout the year. It is adaptable to a variety of soil and agroclimatic conditions. Sapota flourishes in heavy-rainfall areas of western and southern India. But it grows equally well in the drier region of the Peninsular India. The fruit is a native of Mexico and other tropical countries of South America.

Banana (Musa paradisiaca L.) is most popular and main fruit in the international trade. It is producing about 130 countries in the world and India, Ecuador, Brazil and China alone producing half of total bananas. Around 98 per cent of banana production is grown in developing countries.

The Pineapple (Ananus comosus L.) Merr., Bromeliaceae) originates from tropical south America and is now cultivated worldwide in the tropics between 250N ans S. However, there are individual regions of production at higher latitudes (330S), e.g. east London in South Africa. .