 Plant growth promoting rhizobacteria, PGPR, can be selected by screening bacteria for achieving the most promising isolates having suitable colonization and PGP traits. This process should include selecting bacteria for achieving the highest colonization rates and PGP traits. Additionally, a simple screening method to detect endophytic and rhizosphere bacteria isolated from the plants in rotation with rice for rice PGP agents based on a root colonization bioassay and a PGP trait is characterized. This article was authored by Hassan Edisame, Hossain Ali Alakani, and Hossain Merced Hossaini.