Figure 1.

Mean ± SE photosynthetic rates (μmoL CO₂ m⁻² s⁻¹) of sweet pepper leaves before and after treatment with nine different pesticides. Gray curves refer to control plants; black curves indicate treated plants. The moment when each treatment was conducted is indicated by a vertical line (i.e., time = 0). * Indicates significant differences (p < 0.05) between treatments at a given time.