World Journal of
Pharmaceutical and Life Sciences

AZOTOBACTER SPECIES AND OTHER SOIL MICROORGANISMS ENHANCE PLANT HEALTH –A PERSPECTIVE ANALYSIS

*Dr. Pushplata N. Jadhav and Dr. Purnima Sable

ABSTRACT

In the present literature, the best alternative of chemical fertilizer is necessary because of its adverse effects on the soil fertility. There are several alternatives available to enhance the soil fertility. Among the plant growth promoting Rhizobacteria (PGPR), Azotobacter spp. are considered to improve the plant health. It helps in synthesis of growth regulating substances like auxins, cytokinin and gibberlic acid. Application of this bacteria has also become helpful in the reclamation of soil suggesting to be a putative agent which can be used in the transformation of virgin land to fertile one. In addition, it stimulates rhizospheric microbes, protects the plants from phyto-pathogens, improves nutrient uptake and ultimately boost up biological nitrogen fixation. The potential of variety of soil microorganisms to exert beneficial effects on various crops is now well established. Rhizosphere bacteria may promote plant growth directly by providing nutrients or growth factors or indirectly by antagonising soil borne phyto-pathogens through secondary metabolites. The present review enlightened on the biological nitrogen fixation by Azotobacter species and other soil microorganisms.

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