EFFECT OF NITROGEN FERTILIZER AND SPACING ON GROWTH AND YIELD OF MAIZE (Zea inays 1.)

Abstract

An experiment was conducted at Central Far-rn of Sher-e-Bangla Agricultural University. Dhaka during the period from April to July 2006 to study the efibet of different levels of nitrogen and spacing on growth and yield of maize. The experiment was laid out in two factors Randomized Complete Block Design with three replications. Factor A: Three levels of Nitrogenous (180, 220 and 260 kg N/ha) and Factor B: Different types of spacing (50 cm x 25 cm, 75 cm and 90 cm x 25 cm) were used in the experiment.Incasc of nitrogen the maximum number of cobs per plant (1.049), cobs length (16-7 cm), Stover yield (14.744t) and lIan'est Index (28-953%) was observed in N2.The maximum number of grain per cob (271-66), 1000-grain weight (446.444g) and grain yield (6.253t) was recorded from N 3 incase of spacing number of cobs (1.063), cob length (16.9 cm). 1000- grain weight (440.1 Ig), grain yield (7.354t), Stover yield (15.844t) and Harvest Index (32.142%) was found in S2. The maximum number of grain per cob (313.667) was recorded from 53 Incase of treatment combination the maximum number of cobs per plant (1.083) was found in S3N2 The maximum cob length (18.8cm). 1000-grain weight (476.7g), grain yield (8.35t), stover yield (17.$7t), harvest index (33.77%) and Benefit Cost Ratio (7.748) was found in S 2N7 The maximum number of grain per cob (331.7) was found in S3N3•