Abstract

                                Sesbania rostrata is a stem and root nodulating tropical green manure legume. The bacterium Rhizobium Azorhizobium caulinodans is involved in stem and root nodule formation. A pot culture study was conducted with S. rostrata, S. aculeata (Willd.) poir and S. speciosa during January- April, 1988 to investigate the effect of water logging on plant growth, biomass production, nitrogenase activity was higher than root nodules on 45th, 65th and 85th day after sowing. S. aculeata recorded higher biomass on 45th day after sowing. Chlorophyll content, nitrogen, potassium, calcium, magnesium, zinc, copper, iron and manganese were accumulated more in S. rostrata while, S. aculeata and S. speciosa recorded higher organic carbon and phosphorus content with wider C:N ratio.

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