NAVARRO, A. A.; PADDA, D. S. Effects of Sulfur, Phosphorus, and Nitrogen Application on the Growth and Yield of Sweet Potatoes Grown on Fredensborg Clay Loam. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 67, n. 2, p. 108-111, 1983. DOI: 10.46429/jaupr.v67i2.7699. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/7699. Acesso em: 27 jan. 2022.