Abstract:
In this experiment the effects of three rhizobacteria named Azotobacter, Azospirillum and Pseudomonas at
different rhizosphere condition on growth parameters were evaluated as a factorial experiment.10 straines of
rhizobacteria include: P1=P.putida strain R-168, P2=P.flurescens strain R-93, P3=flurescens strain 50090, P4=
P.putida DSM291, P5=Azotobacter chroococcum strain 5, P6=Azotobacter chroococcum DSM 2286,
P7=Azospirillum lipoferum strain 21, P8=Azospirillum lipoferum DSM 1691, P9=Azospirillum brasilense DSM
1690 and P10 = non- inoculation(control) were tested in both sterile and non-sterile soils. The results showed the
interaction of two factors on stem and total fresh weight also on total dry weight and leaf area were significant.
Results of this study revealed that soil natural condition had the higher effects on growth parameter than soil
sterile condition.
