Marketmen said cutting down of bets by the speculators in line with subdued trend in spot markets mainly attributed the fall in guar gum future prices.
Besides, lower export demand also turned kept pressure on guar gum prices, they added.
At the National Commodity and Derivative Exchange counter, guar gum delivery for most-traded, delivery in October contracts dropped by Rs 89 or 1.09 per cent to Rs 8,190 per quintal, with an open interest of 43,600 lots.