624Gederson Luiz Buzzello et al.Rev. Ceres, Viçosa, v. 60, n.5, p. 621-628, set/out, 2013found that the lower concentrations of the plant growthregulator (6 g ha-1) produced 54% of reduction in heightcompared to that observed in control, but the higherconcentration (10 g ha-1) was more effective in reducingplant high, contrasting to this experiment