Assessment of plant growth promoting characteristics of bacterial inoculants isolated from Aloe vera rhizosphere

Increased crop production largely relies on the type of fertilizers used to supplement essential nutrients for plants. Chemical fertilizers lead to increase in the growth and development in plants, but also lead to side effect on health and cause environmental pollution. The use of Plant Growth Promoting Rhizobacteria (PGPR) is a better alternative to solve this problem. They play an important role in sustainable agriculture. In this study, total 65 bacterial strains were obtained from Aloe vera rhizosphere. These isolates were further screened for plant growth promoting traits such as phosphate solubilisation and the production of ammonia, IAA, and siderophore. Four chosen bacterial isolates were further tested for their seed germination enhancement abilities. The present investigation confirms that these chosen bacterial strains can be used as potent PGPR and may be utilized as bio-inoculants for medicinal plants under sustainable and organic agricultural systems.

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