Effect of nitrogen levels and time of application on growth parameters and yield of Barley (Hordeum vulgare L.) Singh Bikramjeet1,*, Sidhu A S2, Singh Kuldip1, Singh C B1 1Department of Soil Science, Punjab Agricultural University, Ludhiana-141 004, Punjab 2PAU, Regional Research Station, Bathinda-151001, Punjab *Corresponding author: bikramjeets2710@gmail.com
Online published on 16 September, 2020. Abstract Field experiment was conducted to study the effect of three N levels (N1- 75% RDN, N2- 100% RDN and N3- 125% RDN) and four times of N application (T1- full dose at pre-sowing irrigation, T2- ½; N at pre-sowing irrigation + ½; tillering stage, T3- ½; N at pre-sowing irrigation + ¼ tillering stage+ ¼ stem elongation (first node detectable) and T4- ½; N at pre-sowing irrigation + ¼ tillering stage + ¼ flowering stage (½; of inflorescence emerged) during 2017–18 at Bathinda and Ludhiana on growth parameters and yield of barley. Results of study revealed that application of 125% RDN (N3) in two splits (½; N at pre sowing irrigation + ½; tillering stage) (T2) produced significantly higher plant height, dry matter accumulation, tiller density, grain yield of barley compared to 75% RDN (N1) at both locations of study. Application of 100% RDN (N2) at stem elongation (T3) or flowering stage (T4) was also equally efficient in increasing growth and yield of barley and it could be the optimum N dose for obtaining best yield results. Grain yield showed significant positive and linear relationship with dry matter accumulation and tiller density. Top Keywords Barley, Grain yield, Growth parameters, Nitrogen levels, Time of nitrogen application. Top |