Cavalcante, L.F. and Silveira, R.I. 1985. Phosphogypsum applied in surface and mixed at soil on hydraulic conductivity, pH and leaching of sodium of one saline sodic soil . Anais da Escola Superior de Agricultura Luiz de Queiroz. 42, 1 (Jan. 1985), 1–14. DOI:https://doi.org/10.1590/S0071-12761985000100001.