Influence of nitrogen and phosphorus on the growth and yield of BRRI dhan57

Abstract

The field experiment was carried out during the period from July to November, 2013 at the research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh to investigate the influence of nitrogen and phosphorus on the growth and yield of BRRI dhan57. The two factorial experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. Four levels of nitrogen N0: 0 kg N ha ) and treatment combination N2P2 (120 kg N and 35 kg P ha -1 ) whereas, the treatments N0, P0 and treatment combination N0P0 (without N and P) showed the smallest plant height in each case, respectively. Side by side, N2, P2 treatments and N2P2 treatment combination gave the maximum effective tillers hill -1 , highest length of panicle and the maximum filled grains panicle -1 . The highest 1000 grain weight (20.85 g), grain yield (4.95 t ha -1 ), straw yield (5.39 t ha -1 ) and biological yield (10.34 t ha -1 ) were found in the treatment combination N2P2 and also found highest in each individual under N2 and P2 treatments.