Market players attributed the spurt in castor seed prices to strong demand in spot markets for paint and lubricant industries.
Apart from this, a spurt in export demand also buoyed the uptrend in prices, they quoted.
At the National Commodity and Derivatives Exchange, castor seed delivery for April climbed up further by Rs 69, or 1.46 per cent, to Rs 4,805 per quintal, clocking an open interest of 95,320 lots.