Performance of Sweet Sorghum Genotypes to Varying Levels of Nitrogen and Phosphorus

Abstract

A field experiment was conducted during kharif 1996 to identify promising sweet sorghum genotypes for fodder production and to determine the optimum levels of nitrogen (N) and phosphorus (P) for maximizing fodder yield. The treatments comprised two genotypes, SSV-84 and SSV-12611, three levels of N (75, 100 and 125 kg/ha), two levels of P (50 and 60 kg/ha), and the local check DFJ-1, a ruling variety. SSV-84 produced significantly higher green fodder yield (49.26 t/ha) than SSV-12611 (47.32 t/ha), and both genotypes were superior to the local check DFJ-1. Both sweet sorghum genotypes responded positively to increasing N levels up to 125 kg/ha, whereas application of P beyond 50 kg/ha did not result in a significant response.