Effects of nitrogen and phosphorous fertilization on seed crop of onion (Allium cepa L.) in a semiarid tropical soil. Tropical Agriculture, [S. l.], v. 72, n. 3, 1995. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2463.. Acesso em: 9 dec. 2023.