10.22376/ijpbs.2019.10.1.p1-12 Volume 5 Issue 4 2014 (October - December) The antibacterial activity of the root, stem and leaf extracts of lessThan i greaterThan Excoecaria agallocha lessThan /i greaterThan L. was tested against the test organisms Bacillus subtilis lessThan i greaterThan , lessThan /i greaterThan Escherichia coli, Klebsiella pneumoniae lessThan i greaterThan , lessThan /i greaterThan Salmonella spp., Shigella sonnei and Staphylococcus aureus lessThan i greaterThan . lessThan /i greaterThan  The activity was tested both by agar well diffusion and disc diffusion methods. It was found that the extracts were very effective in controlling the growth of all the organisms tested. M. DEEPA AND C. K. PADMAJA Excoecaria agallocha, mangrove, antibacterial activity, Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, Salmonella spp., Shigella sonnei and Staphylococcus aureus. 169-178