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PGPR: Heart of Soil and Their Role in Soil Fertility

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Agriculturally Important Microbes for Sustainable Agriculture

Abstract

Soil is an excellent niche for the growth of microorganisms which includes plant growth-promoting rhizobacteria (PGPRs). PGPRs have great potential for plant growth promotion as they control pest and disease and have been considered important in sustainable agriculture. PGPRs induce and/or synthesize various growth-promoting and biocontrolling chemicals which are useful for sustainable agriculture and environment. These chemicals are phytohormones, antibiotics, enzymes, etc., which react with the soil and provide better health to the plants. PGPRs directly or indirectly circulate their products to soil for better soil health which further enhance the soil immunity followed by influencing plant growth, productivity, and yield. Soil immune system works strongly by the activities of soil microbes which are considered as a heart of soil. These soil microbes are responsible for increasing soil fertility and productivity which are considered important for sustainable agriculture.

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Acknowledgments

The authors are greatly thankful to all the supporting members of the GBPUAT Pantnagar who encourage us to prepare this manuscript.

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Sharma, I.P., Chandra, S., Kumar, N., Chandra, D. (2017). PGPR: Heart of Soil and Their Role in Soil Fertility. In: Meena, V., Mishra, P., Bisht, J., Pattanayak, A. (eds) Agriculturally Important Microbes for Sustainable Agriculture . Springer, Singapore. https://doi.org/10.1007/978-981-10-5589-8_3

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