Significance and Benefits of Plant Growth Promoting Rhizobacterium in Techniques of Composting

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Dipankar Paul
Dhanendra Kumar Rai


Composting is a biological process in which numerous indigenous microbe species work in compost mixtures to humify and degrade organic waste. A biological process of decomposing organic materials is composting. Microorganisms are crucial to the composting process. Via a number of direct and indirect actions, a genus of bacteria known as PGPR colonizes plant roots and supports plant growth and disease control. PGPRs are recognized as soil efficient microorganisms, which can aid in the faster growth of a variety of crops as well as the management of soil illnesses. By lowering the prevalence of illness concluded biological controller mechanisms such antibiosis, the formation of complete confrontation, and competition for nutrients, rhizobacteria can indirectly enhance plant growth. Isolation of Rhizobacterium was done from ground-nut plant and studied for its beneficiary effects in composting of humus matter. The rhizosphere of plants is home to a vast range of microorganisms (a variety of mustard & ground nut plant). For isolation of PGPR, morphological and biochemical characterization was used to distinguish their properties such as shape, size, texture, etc. Pour plate method and sprinkle method was performed for isolation and identification was done by Gram staining and bio-chemical tests. A fresh inoculum was prepared in sterile medium and the PGPR was used for composting. While degradation of the humus matter and to enhance, the quality of compost it was made sure that no pathogens were present in the sample or the prepared compost. After proper degradation of the humus matter the compost was utilized for cultivation of plants. The required parameters and most importantly N: P: K ratio was also maintained by the PGPR microbial strain and the compost was free from any pathogens.

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