Investigations on mustard were conducted during rebi seasons of 1979-80 and 1980-81 to study the effect of levels of irrigation and fertilizer on seed yield and its quality. Scheduling irrigation at preflowering stage (1) resulted significantly more seed and stover yield over control (1) during both years. Seed and stover yield reduced significantly with the reduction of recommended fertilizer dose. Oil content in seed increased with the increa- sing levels of irrigation and with decreasing levels of fertilizers. The mean quantam of oil production increased with increasing levels of irrigation and fertilization, 40-60-20 (full recom mended) fertilizer dose along with two post sowing irrigations produced maximum oil yield. However, seed and all produced by one and two post sowing irrigations were at par.
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