Das and Saha (2005) reported that the effect of PGPR inocula-
tion with non symbiotic N2 fixing bacteria Azotobacter (strain DS3)
and Azospirillum (strain DM10) at 50 kg N ha−1 were found sig-
nificantly increased growth, yield (23.7%) and inorganic nitrogen
(29.7%) and organic nitrogen content (23.3%) in rhizosphere soils of rice.