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

Abstract

The field experiment was conducted during rabi season, November 2021 to February 2022 in the experimental field of Sher-e-Bangla Agricultural university, Dhaka to determine effects of boron and zinc on growth and yield of mustard (Brassica campestris) variety BARI Sarisha-14. The treatments of the experiment was consisted of three levels of boron i.e., 0 kg B/ha (B 0 ), 1 kg B/ha (B 1 ) and 1.5 kg B/ha (B 2 ); three levels of zinc i.e., 0 kg Zn/ha (Zn 0 ), 3kg Zn/ha (Zn 1 ), 5 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 1.5 kg B/ha (B 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, B 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 boron and zinc had significant effect on all the growth and yield parameters. Except the harvest index, the B 2 Zn 2 treatment combination or 1.5 kg B/ha with 5 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 1.5 kg B/ha with the combination of 5 kg Zn/ha increased the growth and yield of mustard and this may be the best combination for the growth and yield of mustard.