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Nitrogen fixation, nodulation and competition abilities of Bradyrhizobium japonicum strains

, : Nitrogen fixation, nodulation and competition abilities of Bradyrhizobium japonicum strains. Turkish Journal of Biology 21(1): 27-38

Samples were collected from the major soyabean production areas of Adana and Icel province, Turkey. The Rhizobium populations of soils were determined in greenhouse experiments. Enumeration of rhizobia populations using the Most Probable Number Technique indicated a range of 0 to 3.1x104 viable rhizobia/g soil for Bradyrhizobium japonicum. The symbiotic effectiveness of native populations were compared with one level of N. Both highly- and weakly effective isolates were found.


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