Mustard seed prices were down by Rs 17 to Rs 3,789 per quintal in futures trade today speculators liquidated positions in line with subdued physical market trend.
Market players said, tracking weak leads in the spot markets, traders opted to offload holdings, which caused the fall in mustard seed futures prices.
In the spot market, mounting stocks on steady supplies from producing belts amid selective demand for oil mills kept the prices in the red, they quoted.
At the National Commodity and Derivatives Exchange, mustard seed delivery for the immediate May contract weakened by Rs 17, or 0.45 per cent, to Rs 3,789 per quintal with an open interest of 68,500 lots.
Similarly, the delivery of the June contracts eased by Rs 13, or 0.34 per cent, to Rs 3,835 per quintal with an open interest of 76,810 lots.