Efficiency in the use of phosphorus by cowpea genotypes. Bioscience Journal [online], 2019. [online], vol. 35, no. 4, pp. 1043–1050. [Accessed18 January 2026]. DOI 10.14393/BJ-v35n4a2019-39507. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/39507.