Figure 1.

Percentage of viable plants over the five weeks of treatments with deionized water (CTL), glyphosate (GLY), and different concentrations (12.5, 25, 50, 75, and 100% (v/v)) of the aqueous extract prepared with fresh leaves (FLE; 617 g_{fresh weight} L⁻¹) (a) and with dried leaves (DLE; 250 g_{dry weight} L⁻¹) (b). Results are expressed as mean ± SD (n ≥ 3). ° refers to statistically significant differences (p ≤ 0.05) between treatments and the control (CTL), for the last week; * refers to statistically significant differences (p ≤ 0.05) between weeks, for each treatment and the CTL.