Figure 4.

Symptom evolution in maize leaves submitted to post-emergence treatment with the formulations. Symptoms were recorded 8 days 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 application dosages of 2000 or 200 g ha⁻¹, respectively.