Marketmen said besides a weak trend in global markets, profit-booking at existing levels by speculators let to the fall in soybean prices at futures trade here.
Besides, slackness in demand from vanaspati oil units at spot markets too weighed on prices, they added.
At the National Commodity and Derivatives Exchange, soybean for delivery in current month slipped by Rs 32 or 1.02 per cent to Rs 3,092 per quintal, clocking an open interest of 6,670 lots.