Author(s):

Mahalakshmi S, M Vijayapriya and N Pandeeswari

Abstract: Plant growth promoting rhizobacteria (PGPR) are soil bacteria with some beneficial effects on soil properties. Plant growth promoting rhizobacteria are beneficial soil bacteria that colonize plant roots and enhance plant growth promotion activity by different mechanisms in various ways. The use of bio inoculants forms one of the vital components for a long-term sustainable agriculture system of any crop. Considering the potential of plant growth promoting rhizobacteria the knowledge on the association of PGPR will be of immense help for standardizing microbial inoculants to enhance the crop yield. In the present study an attempt has been made to develop a suitable consortium in a suitable formulation with improved shelf life to use as a prudential bio inoculants. An attempt was made to develop carrier based biofertilizer by using different isolates of PGPR viz., <em>A. lipoferum</em> TMAzs-13, <em>P. fluorescents</em> TMPs-19 + <em>B. megaterium</em> TMB-3 obtained in the present study with lignite, pressmud. The survivability was studied by monthly viable cell count of PGPR strains in single, dual inoculants, as well as in the consortium prepared with lignite and pressmud carrier materials upto six months of storage. The effect of different concentrations (1% and 2%) of Poly vinyl pyrollidone (PVP) on the survival of PGPR strains in lignite carrier was investigated.

Pages: 545-548  |  1923 Views  801 Downloads

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