RESPONSE OF WHEAT TO LEVELS OF NITROGEN AND PLANT SPACING

Abstract

An experiment was conducted at the Agronomy Field of Sher-e-I3angla Agricultural University. Dhaka during December to March, 2007-2008 to investigate the response of wheat cv. Shourav to different levels of nitrogen and plant spacing. The treatment consisted of three nitrogen levels (120, 180 and 240 kg ha') and four plant spacing (3. 5. 7 andlO cm) in a row of 20 cm apart. The experiment was laid out in a split plot design with three replications. Results revealed that nitrogen level and plant spacing influenced plant towards higher yield either singly or in combination. Nitrogen at the rate of 180 kg ha 4 perlonned maximum yield components and grain yield (3.46 t ha 4 ). Almost similar grain yield (3.76 t ha') was achieved at plant spacing of 20 em x 5 cm. The combined effeci of nitrogen 180 kg ha'' along with 20 cm x 5 cm plant spacing produced greater effective tillers plant" (5.46), length of spike plant'' (12.07 cm). 1000-grain weight (44.73 g) and grain yield (3.94 t ha''), which were positively supported by maximum value othan•'est index (46.27%).