Impact of integrated nutrient management on soil fertility and yield of sorghum genotypes in vertisol

The present investigation was carried out to study the effect of integrated nutrient management on yield of kharif sorghum genotypes and soil fertility during 2007–08. The experiment was laid out in factorial randomized block design with two genotypes, eight treatments and three replications. The treatments consisted of two genotypes viz., SPH-840 and SPV-669, full (80:40:40 NPK kg ha⁻¹) and half recommended dose of inorganic fertilizers alone and in combination with FYM and Azotobacter used as seed treatment. The results indicated that maximum grain yield was recorded in the genotype SPH-840, while, genotype SPV-669 recorded higher fodder yield. Significantly higher grain yield and fodder yield were recorded with the application of 100% RDF. However, application of 7.5 t FYM ha⁻¹ + 50 per cent RDF (T₆) was also found beneficial followed by 100% RDF in respect of grain and fodder yield and available N, P and K status of soil.