Persistence and Competition Between Root-nodule Bacteria Strains Affecting Nodulation Of Soybean Plants

This study was conducted with the following objectives : To determine the effect of rhizobiophage concentration homologous to the indigenous bradyrhizobia on the growth and nodulation of soybean plants inoculated with two strains of Bradyrhizobium japonicum . To study the competition between the introduced strain and the indigenous population of B. japonicum in the presence or absence of rhizobiophage under greenhouse and field condition . To study the competition between the two strains of B. japonicum in the presence or absence of rhizobiophage in two types of soil