MAIZE RHIZOSPHERE MICROBIAL POPULATION IN SOILS OF JHARKHAND

Authors

  • Asha Mishra Birla Institute of Technology
  • Shashwati Ghosh Sachan Birla Institute of Technology
  • Dev Mani Pandey Birla Institute of Technology, Mesra, Ranchi, Jharkhand.

Keywords:

Arhizosphere, Azospirillum, PGPR, Phosphate solubilizing bacteria, Rhizosphere

Abstract

Objective: The main objective of the present investigation is to isolate plant growth promoting rhizobacteria (PGPR) strains from three different zone of rhizosphere and arhizosphere soil, observing bacterial density and exploring rhizosphere effect on the bacterial community.

Methods: Maize rhizosphere soils were collected from twelve different locations of Jharkhand. Various microbial populations (like Pseudomonas spp., Azotobacter spp., phosphate solubilizing bacterial spp. and Azospirillum spp.) were isolated from the different variety of maize rhizosphere. These strains were obtained through pour plate technique by using PGPR specific medium. To explore rhizosphere effects on the bacterial community, some physicochemical properties of arhizosphere soil and rhizosphere soil were measured and the soil bacterial community which helps in plant growth through direct and indirect mechanisms called plant growth promoting rhizobacteria (PGPR) detected by morphological and biochemical characterization. PGPR was purified and subcultured in their respective medium and stored at 40C to maintain throughout the experiment.

Results: Total 65 isolates of Pseudomonas strain, 34 isolates of Azotobacter strain, 49 isolates of phosphate solubilizing bacterial strain and 34 isolates of Azospirillum strain were isolated from maize rhizosphere. The pH of rhizosphere soil was lower than arhizosphere soil and rhizosphere soils contain more moisture than arhizosphere soil. Highest moisture % was found in Deoghar (26.90%) followed by Dhurwa (21.73%) and Tamar (21.21%) rhizosphere soils. Microbial population was highest in rhizoplane zone. Organic carbon, available nitrogen, phosphorus, potassium and sulphur were found more in rhizosphere soil than arhizosphere soil. High quantity of organic matter (1.52%), available nitrogen (272.83 kg ha-1), available phosphorus (73.64 kg ha-1), potassium (317.42 kg ha-1) and sulphur (66.60 kg ha-1) were present in rhizosphere soil.

Conclusion: This study reveals that rhizosphere soil characterized by greater microbial population and their activity which enhance soil fertility through increasing moisture, pH and available nutrients in soil to promote the growth of plants.

 

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Author Biography

Dev Mani Pandey, Birla Institute of Technology, Mesra, Ranchi, Jharkhand.

Associate Professor

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Published

01-04-2015

How to Cite

Mishra, A., S. G. Sachan, and D. M. Pandey. “MAIZE RHIZOSPHERE MICROBIAL POPULATION IN SOILS OF JHARKHAND”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 4, Apr. 2015, pp. 218-22, https://mail.innovareacademics.in/journals/index.php/ijpps/article/view/4442.

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Original Article(s)