EFFECT OF NPK BRIQUETTE ON THE GROWTH AND YIELD OF BORO RICE (BRRI dhan29)

Abstract

An experiment was conductedat the Research Farm, Sher-e-Bangla Agricultural University, Dhaka during the period from November 2016 to May2017 to study the effect of NPK briquette on the growth and yield of boro rice (BRRI dhan29). The experiment consisted of eight treatments viz.T ii

1 (No fertilizer; Control), T (RFD (Recommended fertilizer dose), T 3 (2 NPK briquette of 2.40 sized), T (1 NPK briquette of 2.40 sized), T 5 (3 NPK briquette of 2.40 sized), T (2 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF), T 7 6 (1 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF) and T (3 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF). BRRI dhan29 was used as a test crop for the experiment. The experiment was laid out following Randomized Complete Block Design (RCBD) with three replications. Results showed that the highest number of tillers hill -1 8 (21.56), number of effective tillers hill (20.66), number of filled grains panicle -1 (116.36), number of total grains panicle (120.98), panicle length (24.62 cm), grain yield (8.44 t ha -1 ), straw yield (9.88 t ha ), biological yield (18.32 t ha -1 ) and harvest index (46.07%) were found from the treatment, T (2 NPK briquette of 2.40 sized). The lowest results on the respected parameters were found from T 1 1 (No fertilizer; Control). The lowest number of non-effective tillers hill (0.90) and number of unfilled grains panicle -1 (4.62) was found from the treatment, T (2 NPK briquette of 2.40 sized). The highest value of the N, P and K content in post-harvest soil was obtained from treatment T 3 (3 NPK briquette of 2.40 sized + 1 top dressing at tiller stage @ ¼ of RDF) and T 8 (No fertilizer; Control) treated soil showed the lowest.