Santos, J.A.C. et al. 2014. Cultivars height hoeing number and harvest periods influence on weeds incidence and corn grains yield. Pesquisa Agropecuaria Brasileira. 22, 5 (Apr. 2014), 501–503. DOI:https://doi.org/10.1590/S1678-3921.pab1987.v22.14373.