International Science Community Association International Research Journal of Biological Sciences 2278-3202 8 2 2019 02 10 Screening of plant growth hormone producing microorganisms 1 5 EN Sadanandan Sruthy 1 Department of Zoology, S. B College, Changanassery-686101, Kerala, India and TIES, Ecological Research Campus, K.K.Road, Vellore P.O., Kottayam-686 501, Kerala, India and Abad food servics, Abad Fisheries Pvt. Ltd, Kochangadi, Chullickal, Kochi-682202, Kerala, India M.V. Vincy 2 Department of Zoology, S. B College, Changanassery-686101, Kerala, India Elias Roshni Susan 3 TIES, Ecological Research Campus, K.K.Road, Vellore P.O., Kottayam-686 501, Kerala, India Prasad Chandhu K. 4 Department of Zoology, S. B College, Changanassery-686101, Kerala, India and TIES, Ecological Research Campus, K.K.Road, Vellore P.O., Kottayam-686 501, Kerala, India George Jessen 5 Eben-Ezer Degree College, Eben-Ezer Group of Institutions, No.19, Hennur-Bangalur Main Road, Bangalore, Karnataka, India > Research Paper 2018 8 29 2019 02 10 A study was conducted to determine the Plant growth promoting rhizobacteria (PGPR). This study was focusedto isolate the Plant growth promoting bacteria (PGPB)such as Azotobacter spp, Pseudomonas spp, Rhizobium spp, and Phosphate solublizing bacteria from various samples. In this study, microorganisms were isolated from rhizospheric soil, non-rhizospheric soil and from the root nodules of leguminous plants.From the present study we can conclude that rhizosphere, non-rhizosphere and root nodular bacteria are able to produce Indole Acetic Acid (IAA), Gibberellic Acid (GA), Ammonia and Siderophore. All the four species of microorganisms were capable of producing phytohormones such as IAA, GA and growth promoting substances like Siderophore and Ammonia are able solublize phosphate in varied concentrations. Copyright@ International Science Community Association