1 Scientific Officer, RFS Division, Bangladesh Rice Research Institute (BRRI), Gazipur, Bangladesh
2 Professor, Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur, Bangladesh
3 Principal Scientific Officer, Soil Science Division, BRRI, Gazipur, Bangladesh
4Assistant Professor, Department of Agroforestry and Environment, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur, Bangladesh
5Associate Professor, Department of Agroforestry and Environmental Science, Sher-e- Bangla Agricultural University, Dhaka Bangladesh.
*Email: smonbrri@yahoo.com
An alley cropping experiment was conducted to investigate the effect of alley widths of Gliricidia sepium on Aus rice (BR24) yield and the performance of Gliricidia sepium at different nitrogen levels. The experiment was conducted at the research farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) Gazipur, Bangladesh during May 2008 to September 2008. The experiment was laid out in a splitplot design having three replications. Gliricidia sepium alley widths were in main plots, and five nitrogen levels under each alley widths were distributed to sub-plot. Three alley widths 3.0, 4.5, and 6.0 m and a control, without tree were compared under five N doses 0, 18.75, 37.5, 56.25 and 75 kg ha.−1G. sepium species gave the highest (20.24 t ha−1) pruned materials from closer alley width(3m). Test variety, BR24.gave the highest grain yield (3.54 t ha−1) receiving 75 kg N from urea and pruned materials (PM) in 4.5 m alley width. The study suggests that G. sepium can contribute to Aus rice yield.
Alley widths, Nitrogen levels, Pruning materials, Rice yield
