Fig. 1. Essential oil content of lemon grass non-inoculated (light gray bars) and inoculated (dark gray bars) with AMF Rhizophagus clarus in soil under five levels of Pb (0, 50,
100, 500, and 1000 mg kg−1 soil). Columns followed by the same letter are not significantly different (Tukey, p ≤ 0.05). Bars = standard error.