Vol. 11, Issue 4 (2022)

Author(s):
Narendra Kumar Bharati and Ritu Thakare

Abstract:
The field experiment was conducted at research farm of Bajra Research Scheme, College of Agriculture, Dhule with an objectives to evaluate the changes in soil biological properties influenced by inorganic and organic inputs under pearl millet. The experiment was laid out in Randomized Block Design with eight treatments consists of inorganic fertilizers in combination with organics viz., FYM, vermicompost and poultry manure. Soil biological properties viz., soil microbial biomass C and N, carbon and nitrogen mineralization, dehydrogenase activity, fungal, bacterial and actinomycetes population were found higher at 45 days of sowing than at harvest. The significantly maximum SMBC (157.01 µg C g^-1 soil), SMBN (48.12 µg N g^-1 soil), C and N mineralization (18.20 µg C g^-1 soil d^-1 and 1.06 µg N g^-1 soil d^-1, respectively), dehydrogenase activity (81.36 µg TPF g^-1 soil 24^-1), fungal (28.00 x 10⁴ cfu g^-1 soil), bacterial (57.00 x 10⁷ cfu g^-1 soil) and actinomycetes (48.00 x 10⁶ cfu g^-1 soil) population were recorded with the application of 50% RDN through fertilizers + 50% N through FYM followed by 100% RDN through FYM. The enhancement in soil biological properties was noticed with the application of vermicompost. The influence if organics on biological activities was in the order of FYM > vermicompost > poultry manure. Application of organic manures and fertilizer was an important approach in soil fertility improvement. Application of 50% RDN through fertilizers + 50% N through FYM and 100% RDN through FYM with recommended dose of fertilizers performed better as compared to sole chemical fertilizer.