Author (s): M. Hasanuzzaman, M.H. Ali, M.F. Karim, S.M. Masum and J.A. Mahamud
Abstract
The Experiment was carried out at Sher-e-Bangla Agricultural
University, Dhaka during the period of November 2010 to May 2011 to study the
influence of prilled urea and urea super granules on the growth and yield of
hybrid rice Heera1. The treatments consisted of six prilled urea levels viz., 0, 80, 120, 160, 200 kg N ha-1 and
urea supergranules ( @ 75 kg N ha-1). PU was top dressed in three equal splits at 10, 35 and 55 days after
transplanting. The USG was placed at 5-10 cm soil depth at 10 DAT in the centre
of four hills in alternate rows at 1 granule in one spot. The effect of USG showed significant variation in respect of growth, yield contributing characters and yield. At harvest,
the highest number of effective tillers hill-1 (13.63),
filled grains panicle-1 (154.67),
1000- grain weight (29.35 g), grain yield (9.42 t ha-1) and straw yield (13.33 t ha-1) were obtained from the application of USG showing 10% more grain yield
than PU.
Key words: Hybrid rice, urea supper granules and prilled urea.
