Response of summer sorghum (Sorghum bicolor L. Moench.) to Spacing and nitrogen levels

Abstract

A field experiment was conducted in factorial RBD at college farm NAU, Navsari. during summer seasons of 2017 to study the response of summer sorghum (Sorghum bicolor L. Moench.) to spacing (45 x 15 cm, 45 x 20 cm, 60 x 10 cm and 60 x 15 cm as S1, S2, S3 and S4, respectively) and nitrogen levels (120, 80 and 40 kg/ha as N1, N2 and N3, respectively). The crop sown at spacing 60 x 15 cm (S4) recorded significantly higher values for growth attributes (plant height, number of internodes and dry matter per plants) as compared to other spacing treatments but remained at par with 45 x 20 cm (S2) spacing. While the spacing 60 x 10 cm (S3) spacing recorded higher grain and fodder yield, this remained at par with 45 x 15 cm (S1) spacing. Application of 120 kg N/ha (N3) recorded significantly higher growth attributes and yield in comparison with 80 and 40 kg N/ha, while remained at par with 80 kg N/ha (N2).