Effect of nitrogen and sulphur on growth, yield attributes and seed yield of mustard (Brassica juncea) in eastern plains of Rajasthan +

Abstract

A field experiment was conducted during the winter season of 1996-97 and 1997-98 at Agricultural Research Sub Station, Kumher (Bharatpur), to study the effect of N and S on seed yield, plant height, primary and secondary branches and dry-matter accumulation of Indian mustard [Brassica juncea (L). Czernj. & Cosson]. Nitrogen @ 80 kglha + S @ 60 kglha significantly increased siliquaelplant, seedslsiliqua, length of siliqua and test weight of seeds and also resulted in highest seed (2,109 kglha) yield on pooled basis. On pooled basis, optimum dose of N and S was 88.24 and 74.86 kglha respectively. N@ 80 kglha resulted net income and benefit : cost ratio of Rs 15,799lha and 2.69, respectively, during the first year and Rs 18,1931 ha and 2.87 during the second year. Sulphur 60 kglha gave a net income of Rs 14,774lha and benefit : cost ratio 2.95 during the first year and Rs 17,058lha and 2.76 during the second year. The increase in N uptake under 40,60, and 80 kg Nlha was 30, 57 and 74% re- spectively, over the control (20 kg Nlha), whereas it was 17, 28 and 34% under 20, 40 and 60 kg Slha. Content (%) of N and S, in seed stalk increased with the increas in N and S levels. The residual available N and S also im- proved with the increasing N and S application.