Prices of mustard seed rose in the benchmark market of Jaipur because of higher demand from domestic crushers. There is good demand from oil millers, as well as steady export demand for the meal, which is seen pushing prices of the oilseed higher. The most active June futures on NCDEX, however, were down 12 rupees at 3,951 rupees per 100 kg, tracking weakness in soybean and strength in the rupee against the dollar. A firm rupee against the dollar is unattractive for exporters of mustard meal.