In this study, three PSB strains belonging to the Pseudomonas genus, isolated from soil harvested under rapeseed (Pnapus), winter pea ( Pisum sativum , Ppea), and faba bean Vicia Pfaba), were tested on growth. This test was performed in a greenhouse experiment with four plant replicates pots per modality during vegetative stage of (10 weeks), combination gradient P fertilization (P100, P50, P25...