Carbon metabolism, nitrogen assimilation and seed yield of cowpea (Vigna unguiculata) plants dependent on nitrate-nitrogen or on one of two strains of Rhizobium. Tropical Agriculture, [S. l.], v. 58, n. 2, 1981. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2833. Acesso em: 19 mar. 2025.