Prices of mustard seed fell in Jaipur due to low demand from oil millers. However, mustard futures rose on concerns over forecast of cloudy weather in key growing areas of Rajasthan. Cloudy weather may hit growth of the oilseed crop, making it vulnerable to pests and lower yield. The most-active April contract was 4,172 rupees per 100 kg, up 0.9% from the previous close.