Morphological and biochemical characterization of bacterial diversity under the rhizospheric soils of fruit orchard: A case study

Soil microorganisms play an important role in soil microbiological quality and productivity. The development of effective methods for studying the diversity, distribution, and behavior of agriculturally important microorganisms in soil habitats is essential for a broader understanding of soil health and fertility parameters. The present work aims to critically evaluate some agriculturally important microorganisms (AIMs), through appropriate microbiological and biochemical methods, the study demonstrated the presence of AIMs in the rhizosphere of Pomegranate (Punica granatum), Mango (Mangifera indica) in Rajasthan state. The microbial diversity existing within top 0–20 cm fruit orchard rhizospheric soil, was isolated and characterized morphologicaly and biochemically and found the promising microbes, namely (Genus), Bacillus, Pseudomonas and Micrococcus. The optimum temperature, pH and EC for isolated AIMs were found to be 33.83ºC and 7.3, 0.34 respectively. The bacteria utilize glucose, sucrose and starch as sole carbon source. The isolated microbial strains from fruit orchard rhizospheric soils have such Plant growth promoting rhizobacteria (PGPR), PSB (Phosphate solubilizing bacteria), auxin producing bacteria, that use one or more direct or indirect mechanisms to improve the growth and health of plants.