Ampomah O, Ofori-Ayeh E, Solheim B, Svenning M. Host range, symbiotic effectiveness and nodulation competitiveness of some indigenous cowpea bradyrhizobia isolates from the transitional savanna zone of Ghana. ajb [Internet]. 2010 Aug. 30 [cited 2026 Oct. 3];7(8). Available from: https://www.ajol.info/index.php/ajb/article/view/58589