Marketmen said the fall in castor seed prices was mostly attributed to a weak trend in the spot markets owing to tepid demand from soap and other consuming industries.
At the National Commodity and Derivative Exchange, castor seed for delivery in February fell Rs 86, or 1.98 per cent, to Rs 4,261 per quintal with an open interest of 50,940 lots.
The delivery for January contracts also declined Rs 76, or 1.77 per cent, to Rs 4,215 per quintal, with an open interest of 27,470 lots.