Nitrogen and silicon fertilization of upland rice . Scientia Agricola, [S. l.], v. 60, n. 4, p. 761–765, 2003. DOI: 10.1590/S0103-90162003000400023. Disponível em: https://www.revistas.usp.br/sa/article/view/21916.. Acesso em: 6 may. 2024.