Bradyrhizobium strain and the 15N natural abundance quantification of biological N2 fixation in soybean . Scientia Agricola, [S. l.], v. 65, n. 5, p. 516–524, 2008. DOI: 10.1590/S0103-90162008000500011. Disponível em: https://www.revistas.usp.br/sa/article/view/22330.. Acesso em: 16 jun. 2024.