EFFECT OF NITROGEN LEVELS AND SPACING ON THE PERFORMANCE OF BRRI dhan 44

Abstract

The field experiment was conducted at Sher-e-Bangla Agricultural University Fanu, l)haka during the Aman season from 7 Jul) - to 3 December 2007 to observe the performance of nitrogen and spacing on the yield and yield contributing characters of BRRI dhan 44. The experiment consist of four levels of nitrogen viz. 0, 40. 80 and 120 kgha' and three spacing viz. 25 cm x 25 cm, 25 cm x 20 cm and 25 cm x IS cm. The experiment was laid out in split plot design with three replications, assigning the N rates in the main plot and spacing in the sub-plots. Gradual Increase of N up to a certain level increased plant height, tillers hiw', eiièctive tillers hilt', grains panicle', grain and straw yield. The spacing 25 cm x 15 cm showed better performance in all parameters compared to other spacing. Nitrogen @ 80 kg ha coupled with hill arrangement at 25cm x 15 cm influenced plant to produce more yield components and yield. The maximum yield 5.69 thai' was recorded for this combination effect