Total content of flavonoids (A,B), flavan-3-ols (C,D), anthocyanins (E,F) and carotenoids (G,H) measured in the pulp (A,C,E,F) or peel (B,D,F,H) of peaches harvested from trees treated with different dosages of biostimulant (5.0, 4.0 or 2.5 L/ha) or with water alone. In the different panels, CTRL identifies samples harvested from trees treated with water only. Values are represented as the mean ± SD. For each panel, within the same variety (“Sugar Time” or “West Rose”) the different lowercase (var. SugarTime) or uppercase (var. West Rose) letters indicate significant differences at p ≤ 0.05, as measured by Tukey’s multiple interval test. The letter “a” indicates the highest value.