Effect of nitrogen and plant population on hybrid sorghum csh 1 1. grain yield and its components
Kudasomannavar, B.T.; Kulkarni, G.N.; Patil, V.C.
Mysore Journal of Agricultural Sciences 14(2): 190-195
1980
ISSN/ISBN: 0047-8539
Accession: 005256679
Effects of 4 levels of N and 3 levels of population were studied on sorghum CSH-1 at Agricultural College Farm, Dharwad [India] during kharif 1973. N application up to 150 kg N/ha increased the grain yield significantly. The increase in grain yield due to application of 200 N/ha over that of 50, 100 and 150 kg N/ha was to the extent of 39.9, 13.8 and 0.3%, respectively. Increase in plant population resulted in increased grain yield. The yield increase was to the extent of 13.35 q[quiatals]/ha (19.0%) and 5.9 q/ha (7.6%) with high (6.66 lakh plants/ha) population over low (2.22 lakh plants/ha) and medium (3.33 lakh plants/ha) population, respectively. Increasing the N level from 50 to 150 kg q/ha increased the protein content of grain from 7.53 to 8.95% beyond which depressing effect was observed. Increasing the population from low to high decreased the protein content from 9.0 to 8.12%. Increasing the N level significantly increased the N uptake up to 150 kg N/ha but further increase in N level did not show significant increase although an increasing trend was observed. N uptake at low (158.75 kg/ha) and medium (167.74 kg/ha) populations were on par, but were significantly less than that of high population (186.24 kg N/ha). The optimum level of N production was 186.3 kg/ha.