Evaluation of Symbiotic Nitrogen Fixation by Rhizobial Strains in Common Bean (Phaseolus Vulgaris L.) Using the 15N Isotope Dilution Method . JUST [Internet]. 2016 Jan. 18 [cited 2026 Jun. 11];13(1). Available from: https://journal.knust.edu.gh/index.php/just/article/view/1009