Marketmen said fresh positions built-up by speculators, tracking strong demand from oil mills in the spot markets against restricted arrivals that led to rise in mustard seed prices in futures trade here.
At the National Commodity and Derivative Exchange counter, mustard seed for most-traded delivery in September contracts was trading higher by Rs 7 or 0.19 per cent to Rs 3,708 per quintal, open interest stood at 45,680 lots.
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