Abstract

Characterization of pH Dependent Growth Response of Agriculturally Important Microbes for Development of Plant Growth Promoting Bacterial Consortium

Highlights

  • India has wide range features including climate, vegetation types and landforms and variety of soil forms

  • In the present study growth response of plant growth promoting bacteria (PGPB) from rhizosphere and rhizoplane of different groups of plant has been characterized at broad range of pH (3.0-13.0) and can be applied in soils of different pH range to enhance plant growth and yield

  • Some isolates showed good response in broad pH range from acidic to alkaline (~3.5 to ~12.5). These plant growth promoting bacterial groups can be potentially used as bacterial consortium for application in agricultural fields to enhance crop productivity

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Summary

Introduction

India has wide range features including climate, vegetation types and landforms and variety of soil forms. Soil provides growth medium and habitat for diverse group of flora and fauna such as plants, bacteria, fungi, actinomycetes, algae, small animals etc[3,4]. These soil microflora are predominantly responsible for nutrient availability and recycling, decomposition of organic matter and regeneration of minerals, pesticide degradation and plant productivity[3,5]. Development of bioinoculants as plant biostimulants is emerging tool to replace traditional use of chemical fertilizers and pesticides[9] Success of these bioinoculants may be affected by the various factors at the place of their application such as temperature, pH, toxic contaminants etc. Evaluation of these factors on individual PGPR or a consortium is inevitable

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