Dynia, J.F. et al. 2006. Nitrate leaching in a Typic Haplustox planted with mayze after successive applications of sewage sludge. Pesquisa Agropecuaria Brasileira. 41, 5 (May 2006), 855–862. DOI:https://doi.org/10.1590/S1678-3921.pab2006.v41.7216.