Prices of mustard seed down in Jaipur due to sluggish demand from oil millers, as well as a rise in arrivals of the oilseed. In Jaipur, mustard sold down 30 rupees. Arrivals across the country 17,000 tn vs 15,725 tn. Weak demand for mustard meal and oil in domestic markets is seen weighing on prices. Weakness in the spot market and higher delivery marking of the seed in the June contract expiry is seen exerting pressure on futures contracts. Most active July futures down 0.9%.