R. J. de Freitas, W. M. Leandro, and M. da C. S. Carvalho4, “EFFECT OF SOIL AND FOLIAR POTASSIUM APPLICATION ON YIELD AND FIBER QUALITY IN COTTON (Gossypium hirsutum L.)”, Pesq. Agropec. Trop., vol. 37, no. 2, pp. 106–112, Oct. 2007, doi: 10.5216/pat.v37i2.1835.