The January contract of mustard seed rose on the NCDEX as investors covered their short positions after prices hit a near-two-month low. The January contract was at 3,961 rupees per 100 kg, up 0.5% from the previous close. Prices had fallen in the past two trading days due to lacklustre demand from oil millers. Lower mustard acreage this year further supported prices of the oilseed.