Castor plant (Ricinus communis) is grown in arid and semi-arid regions. It is cultivated in 30 different countries on a commercial scale, of which India, China, Brazil, Russia, Thailand, Ethiopia, and Philippines are major castor seed growing countries which accounts for about 88% of the world’s production. In India it is a Kharif crop, sowing in July-August and arrivals from December onwards till March. Gujarat is the chief producing state, having a share of 86% of domestic production, followed by Andhra Pradesh and Rajasthan. Bag packed of castor seed contains 75kg by weight.