Effect of integrated nitrogen management on growth, yield and quality of sorghum

Abstract

In the kharif seasons of 2022 and 2023, a field experiment titled Effect of integrated nitrogen management on growth, yield and quality of sorghum was conducted at the Agronomy Instructional Farm of the Chimanbhai Patel College of Agriculture, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, Banaskantha, Gujarat. The experiment was laid out in a randomized block design with ten treatments and four replications. The pooled results indicated that application of 50% RDN through castor shell compost + 50% RDN through urea to sorghum crop recorded significantly higher growth parameters, yield attributes, yield and quality parameters viz., plant height at 30,60 DAS and harvest (52.55, 187.66 and 249.46 cm, respectively), dry matter accumulation per plant at 30, 60 and 90 DAS and at harvest (13.01, 84.36, 175.68 and 199.58 g, respectively), stem girth (33.72 mm), higher length of earhead (25.40 cm), grain weight per earhead (50.10 g), test weight (21.99 g), grain (2166 kg/ha) and fodder yield (14059 kg/ha), chlorophyll content (53.95 SPAD value at 60 DAS) protein content (10.49%) in sorghum grain. However, application of RDF (80:40:00 kg N: P2O5:K2O/ha) to sorghum crop recorded significantly higher harvest index (13.55%) and HCN content (30.20 ppm) during pooled result.