At the National Commodity and Derivatives Exchange, castorseed for delivery in far-month December contracts tanked Rs 105, or 2.37 per cent, to Rs 4,320 per quintal, with an open interest of 25,570 lots.
In line with overall trends, the most-active October month contracts traded Rs 85, or 1.99 per cent, lower at Rs 4,181 per quintal, in an open interest of 1,51,320 lots, while delivery in current month lost Rs 77, or 1.83 per cent, to Rs 4,122 per quintal, clocking an open interest of 1,17,480 lots.
Besides, weak export demand also had a negative impact, they said.