PERFORMANCE OF SEEDLING NUMBER HILL-1 AND UREA SUPERGRANULES ON THE YIELD OF TRANSPLANTED AMAN RICE VARIETIES

Abstract

A field experiment was conducted at the experimental field of Sher-e-Bangia Agricultural University during July to December 2007 to find out the effect of four levels of seedling hiW' viz.; I, 2, 3 and 4 and two forms of nitrogen fertilizer-prilled urea (PU) and urea supergranules (USG) on yield and yield components of modern (BRRI dhan44) and traditional (Nizershail) transplant amall rice. The experiment was laid out in a split split-plot design with three replications. Urea was top dressed @ 58 kg N ha in three equal splits at 10, 30 and 50 DAT. The USG (1.8 g) was placed at 5-10 ern soil depth at 10 DAT in the center of four hills in alternate rows @ I granule in one spot to supply 58 kg N ha', Results showed that BRR! dhan44 produced higher grain yield (4.85 t ha'), two seedlings hil)' gave the highest grain yield (3.96 t ha") and USG gave higher grain yield (12.2%) over PU. Interaction results showed that significantly highest grain yield (5.28 t ha') was obtained from transplanting one seedling of BRR! dhan44, application of USG in BRRI dhan44 gave 5.08 t ha and transplanting one seedling hilr' with application of USG gave 4.18 t ha and finally placement of USG by transplanting one seedling hilr' of BRRI dhan44 gave 5.77 t ha'. The higher grain yield was attributed mainly to the number of effective tillers hilr', filled grains panicle" and 1000-grain weight.