A field experiment was conducted with efficient isolates of endophytic nitrogen fixing bacteria ., Gluconacetobacter diazotrophicus NFGS25 and NFGM5 which were isolated from the roots of sugarcane and maize, based on the results of pot culture studies on maize. NFGS25 and NFGM5 were confirmed by the molecular characterization using 16S rDNA method. At 30 DAS(days after sowing), the growth parameters such as plant height ( cm), stem girth ( cm), chlorophyll content (), root length (60 cm), dry matter production of shoot ( g per plant) and root ( g per plant) of maize were maximum in the treatment inoculated with NFGM5 at 75 % RDN level. | Field evaluation of nitrogen fixing endophytic bacterium Gluconacetobacter Diazotrophicus NFGM5 on growth and yield of maize