Bortolon, L. et al. 2016. Degree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soils of Southern Brazil. Pesquisa Agropecuaria Brasileira. 51, 9 (Oct. 2016), 1088–1098. DOI:https://doi.org/10.1590/S1678-3921.pab2016.v51.22430.