Gheri, E. de O. et al. 2000. Critical level of soil phosphorus to <i>Panicum maximum</i> cv. Tanzânia. Pesquisa Agropecuaria Brasileira. 35, 9 (Sep. 2000), 1809–1816. DOI:https://doi.org/10.1590/S1678-3921.pab2000.v35.5962.