EFFECT OF NITROGEN AND ZINC ON THE GROWTH AND YIELD OF MUSTARD

Abstract

The field experiment was conducted during rabi season, November 2018 to February 2019 in the experimental field of Sher-e-Bangla Agricultural university, Dhaka to determine effects of nitrogen and zinc on growth and yield of mustard (Brassica campestris) variety BARI Sarisha-15. The treatments of the experiment was consisted of three levels of nitrogen i.e., 0 kg N/ha (N 0 ), 80 kg N/ha (N 1 ) and 120 kg N/ha (N 2 II

); three levels of zinc i.e., 0 kg Zn/ha (Zn 0 ), 2 kg Zn/ha (Zn 1 ), 3 kg Zn/ha (Zn 2 ). The experiment was laid out in the two factors Randomized Complete Block Design (RCBD) with three replications. Results of this experiment showed a significant variation among the treatments in respect of the majority of the observed parameters. The 120 kg N/ha (N 2 gave the highest plant height, number of branches per plant, number of seeds per siliquae, number of siliquae per plant, length of siliquae and 1000 seed weight. Again, N 2 resulted the maximum seed yield (1.70 t/ha), stover yield, biological yield and harvest index. In addition, except siliquae length and harvest index, 3 kg Zn/ha (Zn 2 ) resulted highest values in all parameters while the lowest values were found in Zn 0 treatment. The interaction between nitrogen and zinc had significant effect on all the growth and yield parameters. Except the harvest index, the N 2 Zn 2 treatment combination or 120 kg N/ha with 3 kg Zn/ha gave maximum values on all parameters including seed yield (1.82 t/ha). Based on these results, it can be suggested that 120 kg N/ha with the combination of 3 kg Zn/ha increased the growth and yield of mustard.