Mustard seed prices rise in Jaipur due to bargain buying by domestic stockists after prices hit an over two-year low recently. In Jaipur, the oilseed up 20 rupees. Lower arrivals of the oilseed and improved demand from oil millers and crushers also supported prices. Arrivals across the country 12750 tn vs 15300 tn. Supplies fell because farmers are not ready to sell their produce at lower rates.