DEL VALLE, JR., R.; FOX, R. H.; LUGO-LÓPEZ, M. A. Response of Soybeans Grown in an Ultisol to Residual Broadcast and Banded P Fertilizer. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 61, n. 2, p. 179–186, 1977. DOI: 10.46429/jaupr.v61i2.10456. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/10456. Acesso em: 19 may. 2022.