Prices of mustard seed in Jaipur are slightly up because of bargain buying by traders after fell to an over two-year low. Arrivals across the country 240,000 bags vs compared with 265,000 bags. Prices are expected to remain weak in the coming weeks because of sluggish demand from the oil millers. Open interest in the June contract is at 12,708 tnonne vs 13,557 tonne, which indicates short covering. Mustard seed June futures are up 0.7%.