Marketmen attributed the rise in mustardseed prices at futures trade to building up of positions, tracking a firm trend at the physical markets on strong demand amid restricted arrivals from growing belts.
At the National Commodity and Derivative Exchange, mustardseed for delivery in current May contract was trading higher by Rs 45, or 1.04 per cent, to Rs 4,392 per quitnal, with an open interest of 12,280 lots.
Also, delivery in June advanced by Rs 34, or 0.77 per cent, to Rs 4,468 per quintal, having an open interest of 77,750 lots.