BONNET, J. A.; RIERA, A. R.; ROLDÁN, J. Yield Responses to Different N-P-K Levels, and Correlations With Foliar Analysis, in Sand-Culture Studies With Corn, Sugarcane, and Cotton. The Journal of Agriculture of the University of Puerto Rico, [S. l.], v. 42, n. 3, p. 168–184, 1958. DOI: 10.46429/jaupr.v42i3.13608. Disponível em: https://revistas.upr.edu/index.php/jaupr/article/view/13608. Acesso em: 18 apr. 2024.