EFFECT OF NITROGEN AND SULPHUR ON GROWTH AND YIELD OF MUSTARD (SAU SHARISHA-1)

Abstract

An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka to determine the effect of different levels of nitrogen and sulphur on yield and yield contributing characters of mustard as well as the nutrient content and their uptake by mustard plants. The experiment consisted of four levels of nitrogen i.e. 0 kg N/ha (N0), 40 kg N/ha (N1), 80 kg N/ha (N2) and 120 kg N/ha (N3); and four levels of sulphur i.e, 0 kg S/ha (S0), 8 kg S/ha (S1), 16 kg S/ha (S2) and 24 kg S/ha (S3). The experiment was laid out in the two factors Randomized Complete Block Design (RCBD) with three replications. The plant height, the number of branches per plant, the number of siliqua per plant, seed and shoot yield increased with increasing N level upto 80 kg N/ha. Further increasing in N level i.e., 120 kg N/ha had a negative effect on seed yield. On the other hand, with increasing S levels from 0 to 24 kg S/ha, plant height, siliqua per plant, 1000 seed weight, siliqua per plant, 1000 seed weight increased significantly upto 16 S/ha. However the number of branches per plant and seed yield increased upto the highest dose of S (24 kg S/ha). In general N and P content in seed yield increased significantly with increasing N levels upto 80 kg N/ha. However, N content and S content in seed increased with increasing S levels upto 16 kg S/ha and 24 kg S/ha, respectively. Uptake of N, P, K and S by plant increased significantly upto 80 kg N/ha (N2) and 16 kg S/ha (S2). The application of N fertilizers had a negative effect % on total N, available S, available P and available K content in soil while the application of S fertilizer upto 16 kg S/ha showed a significant positive effect on available S status of soil. Considering the combined effect of N and S, the treatment combination N2S3 produced the maximum seed yield (1738 kg/ha).