Abstract
Out of 42 strains isolated from Samanea saman, 13 were authenticated as Rhizobium. Most of the colonies were transparent and others were creamy white and yellowish in colour and after 48 hours of incubation the diameter of the colony ranged from 3.2 to 5.4 mm. Experiments were conducted in pot culture using both sterilized and un-sterilized soil and results show significant increase in growth, nodulation and biomass production in seedlings inoculated with strain no Sjo140 followed by Sjo130 and Sjo 128. In Sm121 and Sp112 inoculated seedlings number of nodules were recorded almost double than the uninoculated ones. Strains Sj140, Sj130 and Sp112 were found efficient and suggested for further field performance evaluation.
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