Vol. 12, Issue 3 (2023)

Author(s):
Rani Bathula, Rajeshwar Malawath, T Anjaiah, M Govardhan and S Triveni

Abstract:
Soil microbes are indicators of soil health, to reduce the quantity of external fertilizer application and improve the soil health these soil microbes are important to degrade the available crop residues. Soybean is one of the most important legume in soil health management, considering the fact of this we conducted a field experiment at research farm of Agricultural Research Institute (ARI), Rajendranagar, Hyderabad, Telangana. The experiment consisted treatments were viz.,75% RDF, 100% RDF, 75% RDF + FYM @ 5 t ha^-1, 100% RDF + FYM @ 5 t ha^-1 & absolute control was maintained under with and without leaf fall addition. Each plot measuring 6.1 m x 4.2 m and three replications. ADB-22 (Bhasar) a high yielding variety of soybean was used as the test crop in this experiment. The soil was black clay in texture and moderately alkaline (pH 8.4) in reaction, non-saline in nature (EC 0.16 dS m^-1) and high in organic carbon content (0.67%). Highest number of bacterial population was recorded under at 60 DAS, the treatments receiving RDF + FYM @ 5 t ha-1 as compared to the all other treatments. T₅ (184× 105 CFU g^-1 of soil) and T₄ (178× 105 CFU g^-1 of soil) on par with each other. Maximum fungal population was observed with the treatment T₅ (46 ×104 CFU g^-1 of soil) at 60 DAS and maximum rhizobial population was found with T₅ (55 ×105 CFU g^-1 of soil) under leaf fall addition plots.