More than sixty bacterial genera have been identified in different potato growing rhizosphere. Among them, the species in the genus Pseudomonas such as P. fluorescens and P. putida also to lesser extent, strains belongs to genera Paenibacillus, Serratia and Enterobacter have high interest as they play a role in plant protection (Diallo et al., 2011). Furthermore other bacteria belongs to genera Bacillus had biocontrol efficacy on bacterial wilt of tomato plants under greenhouse conditions