Response of Indian mustard (Brassica juncea) to nitrogen and phosphorus on Torripsamments of north-western Rajasthan

Abstract

A field experiment was conducted during winter (rabi) season of 1993-94, 1994-95 and 1995-96 to study the effect of nitrogen (30,60, 90 and 120 kg Nlha) and phosphorus (0, 15, 30 and 45 kg P,05 kglha) on Indian mustard [Brassica juncea (L.) Czernj. & Cosson]. Application of N up to 120 kglha resulted in significant increase in plant height, primary and secondary branches and siliquael plant except for seedslsiliqua and 1,000-seed weight up to 90 kg Nlha. Phosphorus application up to 45 kg P205/ha resulted in significant increase in plant height, secondary branches and siliquaelplant. With the increased supply of P up to 45 kg P205/ha, the N need of the crop was raised up to 120 kglha for significantly higher seed yield (17.05 qlha). Irrespective of P application, the seed yield increased up to the application of 120 kg Nlha.