Futures contracts of barley on the NCDEX extended losses due an increase in stocks of the commodity at the exchange warehouses. On the NCDEX, the most-active June contract traded at 1,455 rupees per 100 kg, down 0.9%. Stocks of barley at the exchange warehouses are at 9,554 tonne vs 8,855 tonne a month ago. A fall in prices of the grain in Jaipur also weighed on the sentiment.