摘要:Among the 10 bacterial isolates were obtained from Acorus calamus rhizospheric soil of Melaiyar and Nagapattinam districts in Tamil Nadu. All the isolates were identified as Azospirillum spp., Bacillus spp., Pseudomonas spp., and Azotobacter spp. These bacterial strains were tested on morphological, biochemical and screened for their direct growth promoting activities (IAA production, production of Ammonia and Phosphate solubilization) and indirect growth promoting activities (HCN production, Siderophore production).