Marketmen said a weak trend at the spot markets on reports of bumper crop and waning demand from oil mills in spot markets mainly weighed on prices at future trade.
At the National Commodity and Derivative Exchange, mustardseed for delivery in far-month May contracts fell by Rs 23 or 0.59 per cent to Rs 3,878 per quintal, depicting an open interest of 21,970 lots.
Similarly, the most-active delivery in April month contracts was trading lower by Rs 21 or 0.55 per cent to Rs 3,823 per quintal, in an open interest of 40,100 lots.