Marketmen attributed the fall in mustardseed prices at futures trade to profit-booking amid a weak trend at the physical markets on subdued demand.
At the National Commodity and Derivatives Exchange, mustardseed for delivery in most-active December weakened by Rs 29, or 0.62 per cent, to Rs 4,643 per quintal, clocking an open interest of 37,500 lots.
Mustardseed for delivery in January also fell by Rs 27, or 0.57 per cent, to Rs 4,683 per quintal, having an open interest of 32,660 lots.