Performance of Aman Varieties as Affected by Urea Application Methods
Journal Title: Applied Science Reports - Year 2013, Vol 2, Issue 3
Abstract
A field experiment was conducted at Agronomy field of Sher-e-Bangla Agricultural University (SAU), during July- December, 2010 with a view to find out the varietal performance of aman rice as affected by different methods of urea application. The experimental treatments included four varieties i.e. BR11, BRRI dhan33, BRRI dhan39, BRRI dhan46 and four urea application methods viz. 15 kg N ha-1 as prilled urea (PU) at final land preparation + 15 kg N ha-1 as PU at 30 DAT+ 15 kg N ha-1 as PU 50 DAT; 15 kgN ha-1 as PU at 7 DAT + 15 kg N ha-1 as PU at 30 DAT + 15 kg N ha-1 as PU at 50 DAT; 60 kg N ha-1 USG (1.8 g) at 7 DAT; 15 kg N ha-1 as PU at 15 DAT+ 15 kg N ha-1 as PU 30 DAT+ 15 kg N ha-1 as PU at 50 DAT. The experiment was laid out in a split-plot design with three replications having urea application in the main plots and variety in the sub-plots. The results showed that urea fertilizer application method significantly influenced plant height, tillering production, leaf area index, effective tillers hill-1, filled grains panicle-1, unfilled grains panicle-1, total grains panicle-1, 1000-grain weight, grain yield, straw yield, and biological yield. Application of USG N as at 7 DAT gave highest yield (7.82 t ha-1) while application of 15 kg N ha-1 as PU 30 DAT+ 15 kg N ha-1 as PU at 50 DAT gave lowest yield (4.88 t ha-1). Varietal influence were significant on tillering pattern, leaf area index, effective tillers hill-1, filled grains panicle-1,1000-grain weight, grain yield, straw yield and biological yield. BR11 gave the highest yield (8.17 t ha-1) which was statistically similar with BRRI dhan46 (7.3 t ha-1) while the lowest yield obtained from BRRI dhan33 (2.87 t ha-1). Interaction effect of 1.8 g USG along with BR11 showed the highest effective tillers hill-1 (14.00), 1000-grain weight (30.32 g), grain yield (10.67 t ha-1), straw yield (12.00 t ha-1) and biological yield (22.67 t ha-1).
Authors and Affiliations
M. B Islam, M. H Ali, S. M Masum, M Hasanuzzaman, A Rahman, M. T Hosain, M. S Islam, M. P Chowdhury, M. I Khalil
Keywords
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