DefinePK

Abstract

An experiment was conducted to study yield and yield components of wheat under different seed rates and nitrogen levels. Five seed rates (S1 = 60 kg ha-1, S2 = 80 kg ha-1, S3 = 100 kg ha-1, S4 = 120 kg ha-1 and S5 = 140 kg ha-1) and five nitrogen levels (N0 = Control, N1 = 40 kg ha-1, N2 = 80 kg ha-1, N3 = 120 kg ha-1 and N5 = 140 kg ha-1) were tested in the experiment. Results showed that maximum tillers m-2 (334), leaf area index (4.50), grains spike-1 (60), 1000-grains weight (41.91 g), grain yield (3957 kg ha-1) and biological yield (10172 kg ha-1) was produced by the plots seeded with 120 kg ha-1. Similarly nitrogen fertilization at the rate of 120 kg ha-1 resulted maximum (348) tillers m-2, leaf area index (4.42) grains spike-1 (63), 1000-grain weight (42.19 g), grain yield (4145 kg ha-1) and biological yield (10579 kg ha-1). In case of interaction between seed arte and nitrogen it was observed that maximum tillers m-2, leaf area index, grains spike-1, 1000-grain weight, grain yield and biological yield was produced by plots received seed at the rate of 120 kg ha-1 and nitrogen with 120 kg ha-1, while maximum leaf area index was recorded from the plots seeded with 120 kg ha-1 and fertilized with 80 kg N ha-1.
Keywords: Wheat; Seed rates; Nitrogen levels; Yield and yield components
http://dx.doi.org/10.19045/bspab.2016.50070