DEL VALLE, JR., R.; SCOTT, T. W.; LUGO-LÓPEZ, M. A. Response of Irish Potatoes to Various Levels of N and Time of N Application in an Ultisol. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 63, n. 3, p. 344–350, 1979. DOI: 10.46429/jaupr.v63i3.10293. Disponível em: Acesso em: 29 may. 2023.