Figure 4

HPLC chromatograms of phenolic compounds identified in acetone extract from leaves of peach trees treated with (1) Ag NP 10 mL/L, (2) Ag NP 12.5 mL/L, (3) Ag NP 15 mL/L, (4) Zn NP 2.5 mL/L, (5) Zn NP 5 mL/L, and (6) Zn NP 7.5 mL/L compared to untreated trees (C).