Futures contracts of mustard seed on the NCDEX fell, tracking losses in the benchmark market of Jaipur. Prices of mustard seed fell in Jaipur due to a rise in arrivals amid subdued demand from domestic stockists and oil millers after a recent surge in prices. Expectations of a fall in output of the oilseed in Rajasthan, however, cushioned the fall in prices. The most active April contract on the NCDEX was down 30 rupees.