Correlation Analysis between Growth and Yield Components of Sorghum (Sorghum bicolor L.) during Kharif 2022

Abstract

This study investigated the simple correlation relationships between growth, yield, and yield-related traits in sorghum, aiming to identify key determinants for yield improvement. A randomized block design experiment, comprising ten treatments with three replications, was conducted at the Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (U.P.). Treatments consisted of varying levels of Azotobacter chroococcum (10, 15, and 20 g/kg) and zinc (15, 20, and 25 kg/ha). Correlation analysis revealed significant positive correlations between sorghum grain yield and plant height, plant dry weight, ear head length, and test weight. Ear head length exhibited the highest individual contribution to yield, followed by plant height. Furthermore, plant dry weight and test weight also demonstrated positive contributions. Path analysis indicated that the highest combined contribution to yield was mediated through plant height via ear head length, followed by plant height via plant dry weight. These findings highlight the importance of plant height, ear head length, plant dry weight, and test weight as critical selection criteria for enhancing sorghum yield.