Sanches, A. et al. 2013. Saddie poinl and optimum leveis ai nutrienls in fertulizerials. Pesquisa Agropecuaria Brasileira. 24, 8 (May 2013), 1003–1012. DOI:https://doi.org/10.1590/S1678-3921.pab1989.v24.16161.