Blanco, H.G. and Oliveira, D. de A. 2014. Persistence of herbicides in clay soil under sugarcane crop. Pesquisa Agropecuaria Brasileira. 22, 7 (Apr. 2014), 681–687. DOI:https://doi.org/10.1590/S1678-3921.pab1987.v22.14933.