Sorghum hybrids performance on the growth, yield and chemical analysis parameters under graded levels of nitrogen in zero tillage conditions

Abstract

A field experiment entitled “Sorghum hybrids performance on the growth, yield and chemical analysis parameters under graded levels of nitrogen in zero tillage conditions.” was conducted at Agricultural College Farm, Naira (India) in sandy loam soil during rabi 2016-17. The treatments comprised of combination of four sorghum hybrids and four nitrogen levels laid out in Split plot design with three replications. Sorghum hybrid CSH 25 and application of 120 kg ha-1 recorded the highest growth parameters as well as number of grains per panicle. Significantly higher grain yield was obtained with CSH 25 among hybrids and with 120 kg N ha-1. However, stoveryield was highest with hybrid CSH 15R at 120 kgha-1. Nitrogen uptake, agronomic efficiency, net returns and B: C ratio were also highest with CSH 25 at the highest level of N tried (120 kg ha-1) and hence found promising for North Coastal Zone of Andhra Pradesh.