Souza, A.F. de and Brasil Sobrinho, M. de O. 1987. Influence of the foliar spraying with NPK in ca and mg levels in cotton plants (Gossypium hirsutum L. raça Latifolium) . Anais da Escola Superior de Agricultura Luiz de Queiroz. 44, 1 (Jan. 1987), 245–272. DOI:https://doi.org/10.1590/S0071-12761987000100012.