Morgado da Silva, F. L. I. and Magalhães, J. R. (1991) “Characteristics of phosphorus supply to sweet corn grown on a ‘cerrado’ soil”, Pesquisa Agropecuaria Brasileira, 26(7), pp. 1063–1071. doi: 10.1590/S1678-3921.pab1991.v26.3440.