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Abstract
We have previously investigated the effects of different solid carriers on the survival of Bradyrhizobium japonicum. With respect to the important effects of microbial carriers for the inoculation and maintenance of microbial populations. Because to our knowledge there has been no data regarding the effects of liquid carriers including olive oil on the survival of B. japonicum, this research work was performed. The objectives were to: 1) characterize and select the most suitable liquid carries, and 2) study the effects of oil carrier on improving the bacterial performance, and their survival rate on the inoculated seeds. Accordingly, the effects of olive oil on the survival rates of B. japonicum, strain CB 1809 was studied using five different liquid carriers. According to the data use of olive oil may be a suitable method to improve the properties of liquid carriers for the production of rhizobium inoculums.