Mustard seed prices rose in benchmark market of Jaipur, Rajasthan, as demand for the oilseed from crushers and oil millers improved amid a fall in arrivals. Delayed sowing in key growing areas due to adverse weather conditions also supported mustard seed prices. Mustard oil mills across the country crushed 450,000 metric tonne of the oilseed in October, up nearly 6% from the previous month.