Vol. 12, Issue 8 (2023)

A field experiment was conducted during two consecutive seasons of 2021-22 and 2022-2023 at Research Farm, Department of Agronomy, College of Agriculture, Jawaharlal Nehru Krishi Vishwavidhalya, and Jabalpur (M.P.). The experiment was laid out in split plot design with twenty treatment combinations were replicated thrice. The study on effect of nutrient sources and bio-fertilizers on microbial diversity of soil. It’s cleared from the data highest microbial cells counts like Rhizobium (15.66 x 10⁶ cfu g^-1 soil), PSB (18.96 x 10 cfu g^-1 soil) was recorded under the application of enriched vermicompost @ 2 t ha^-1 followed by FYM @ 5 t ha^-1 along with Rhizobium and PSB (14.83 x 106 cfu g^-1 soil) and (17.05 x 106 cfu g^-1 soil), Rhizobium and PSB respectively and same trends was observed for actinomycetes. Whereas, highest fungi population was observed under FYM @ 5 t ha^-1 with combined application of bio-inoculants with respect to 39.83 x 104 cfu g^-1 soil followed by control treatments 34.92 x 104 cfu g^-1 soil and lowest fungi population was recorded under enriched vermicompost @ 2 t ha^-1 along with combined application of bio-fertilizers (28.32 x 104 cfu g^-1 soil).