WATER AND NUTRIENT MANAGEMENT IN INDIAN MUSTARD (BRASSICA-JUNCEA) ANDTHEIR RESIDUAL EFFECT ON RAINY-SEASON GROUNDNUT (ARACHIS-HYPOGAEA)

A 2-year field experiment was conducted at Junagadh to study water and nutrient management in Indian mustard [Brassica juncea (L.) Czernj. & Cosson] and their residual effect on groundnut (Arachis hypogaea L.). Frequent irrigations at an irrigation water : cumulative pan evaporat ion (IW : CPE) of 0.8 increased yield attributes, yield and quality of Indian mustard, while mulching with wheat straw increased the yield a ttributes and seed yield during 1992-93 and seed and stover yields in pooled analysis only. Each successive increase in fertilizer level fro m no fertilizer to full recommended dose (50 kg N + 50 kg P2O5/ha) sig nificantly increased growth, yield attributes and yield of Indian must ard, but decreased the oil content in seed. Manuring with farmyard man ure also significantly increased yield attributes and yield of Indian mustard. Irrigation and fertilizer treatments applied to Indian mustar d did not show residual effect on groundnut crop, whereas straw which and farmyard manure treatments significantly increased plant height, f illed pods/plant and pod and haulm yields of succeeding groundnut crop during 1994.