Abstract:
An experiment was conducted at Agricultural farm of Sher-e-Bangja Agricultural
University (SAU). Ohaka, during December 2007 to May 2008, in Boro season to
study the influence of nitrogen and plant spacing on growth and yield of
born
There were three doses of nitrogen (150. 200 and 250 kg hi') and four plant
spacing's (25 cm
x
10cm, 25 cm x
IS cm and 25 cm
N
20cm and 25 cm
respectively). The experiment was laid out in a split-plot design with three
replications. Nitrogen rates were placed in main plots and spacing in unit plots
(sub-plot). The variety used in the experiment was BRRI dhan29. It was observed
that higher rate ofnitrogen application and with higher plant spacing contributed
highest plant height, number of tillers hill' and dry weight hilr' but closer
spacing showed maximum leaf area index. In case of panicle length. 1000 grain
weight, total grain yield, biological yield and harvest index were not responsive
to higher rate of nitrogen application and maximum plant spacing but with the
application of 200 kg N ha'with 25 cm
x
15 cm plant spacing gave the highest
grain yield (758 t hi'), biological yield, 1000 grain weight and harvest index.
