At the National Commodity and Derivative Exchange, castorseed for delivery of this month contract hardened by Rs 54, or 1.38 per cent, to Rs 3,953 per quintal, in an open interest of 1,360 lots.
In a similar manner, the most-active delivery in March rose Rs 25, or 0.63 per cent, to Rs 4,000 per quintal, with business turnover of 59,720 open lots.
Marketmen said widening of bets coupled with a firm trend after a fall in supplies mainly led to the rise in castorseed prices.