Fig 6. Oxidative stress parameters of B. juncea plants treated with the formulations.

Lipid peroxidation (A) and hydrogen peroxide content (B) were evaluated 24, 48, and 72 h after the plants were sprayed with 3.1 mL of water, empty PCL nanocapsules (NC), commercial atrazine (ATZ), or PCL nanocapsules containing atrazine (NC+ATZ). The formulations containing atrazine at 1 mg mL^-1 were used undiluted or after 10-fold dilution in water (1/10), resulting in atrazine dosages equivalent to 2000 or 200 g ha^-1, respectively. Different letters indicate significantly different values according to two-way ANOVA followed by the Tukey test (p < 0.05). Lowercase letters indicate comparison among all treatments at each time point, while capital letters indicate comparison of the same treatment along its individual time course analysis. Data are shown as means ± SE (n = 5).