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Castor (Ricinus communis L.) is an important non-edible oilseed crop widely found in dry regions of the world. India is the single largest castor producer, accounting for more than 80 percent of the world's castor supply. Castor seed contains about 30% to 50% of oil content, which varies with varieties. Castor oil is extracted from castor seeds through mechanical pressing, solvent extraction, or a combination of pressing and extraction. In recent years, the castor oil processing industry faces a shortage of raw castor seeds in Tamil Nadu. At this junction, value chain analysis of castor in Namakkal district of Tamil Nadu can provide integrated, efficient and functional farmer-industry-tradingpolicy interface. The specific objectives taken for the study are (i) to analyze the castor value chain in study area and (ii) to find out constraints in the castor production and marketing and policy suggestions. A multistage random sampling technique was adopted with Namakkal district as Universe (first stage), Elachipalayam and Tiruchengode block as second stage unit, villages at third stage and farms households cultivating castor as ultimate sampling units. Five types of interview schedules were prepared separately for the castor farmers, processors, local traders, wholesalers, retailers. The value chain analysis and constraints analysis were carried out from the collected data. From the study, conceptual value chain of castor in the Namakkal district was developed and it gives insight into the value chain structure of the study area. The constructed castor value chain showed that various components like farmers, processors/oil mill, commission mandi/trader, and sheller-cum trader were affecting overall performance of the industry and makes it more competitive. Castor production and marketing in the study area affected by various socioeconomic constraints. From the results, this study suggested that adopting contract farming business model in over all development of this sector may be useful in mitigating price fluctuation for the castor growers and processors that too erotic rainfed situation which will be ultimately beneficial to both the stake holders.

A STUDY ON CASTOR VALUE CHAIN IN NAMAKKAL DISTRICT OF TAMIL NADU, INDIA