Marketmen said the recovery in castor seed prices at future trade was attributed to covering up of short positions coupled with pick-up in spot demand amid tight supplies.
Moreover, fresh export demand also gave a push to the rising prices, they added.
At the National Commodity and Derivative Exchange, castor seed for delivery in April month recovered by Rs 33, or 0.71 per cent, to Rs 4,668 per quintal, with an open interest of 64,550 lots.