EFFECT OF Zn, B AND Cu ON THE YIELD AND QUALITY OF BORO RICE (BRRI Dhan 28)

Abstract

A field experiment was carried out to evaluate the response of Zn, B and Cu on the yield and quality of boro rice at the research farm of Sher–e–Bangla Agricultural University, Dhaka, Bangladesh during the period from January to May, 2016. The experiment consisted of single factor with 5 different combination of fertilizers viz., i. T 1 =

N 55 +P 35 +K 65 +S 18 +Zn 5 +B = N 55 +P 35 +K 65 +S 18 +B 4 +Cu 4, iii.T 3 = N 55 +P 35 +K 65 +S 18 +Zn 5 +Cu + P 35 + K 65 + S 18 + Zn 5 + B 4 and v. T 5 = N 55 +P 35+ K 65 +S (control). The experiment was laid out following Randomized Complete Block Design (RCBD) with four replications. The micronutrients (Zn, B and Cu) along with recommended doses of NPK had significant influence on the growth, yield and yield contributing characters of rice. The maximum weight of 1000 grain (23.82 g) was gained by T 1 18 and the minimum weight of 1000 grain (20.31 g) was gained by T 5 . T gave 17.28 % more weight of 1000 grain over treatment T 5 1 . The maximum rice yield (4.19 t ha -1 ) was produced when the plot treated with T 1 (N 55 +P 35 +K 65 +S 18 +Zn 5 +B 4 +Cu ) fertilizer package while the minimum grain yield (3.35 t ha -1 4 ) was produced when the plot treated with T which gave 25.08% more grain yield over T . Considering the above fact, fertilizer package T 1 (N 55 +P 35 +K 65 +S 18 +Zn 5 5 +B 4 +Cu ) could be the best fertilizer management practice for optimizing the production of BRRI dhan 28 during boro season.