Figure 1

Effect of proline (Pro) and calcium (Ca) as foliar application alone or incombination with humic acid (Hc) as soil application on carbohydrates leaves percent (a) and proline (b) leaves content (µmoles g−1) of ‘Wonderful’ pomegranate trees grown under salt stress conditions. The different letters on the bars in each column represent significant difference at p ≤ 0.05; standard error bars represent standerd error of three replicates. Pro: 5 mM proline alone as foliar application; Ca: 1.5% calcium as foliar application alone; Hc: 15 g humic acid as soil application alone; Pro + Hc: 5 mM porline and 15 g humic acid; Ca + Hc: 1.5% calcium and 15 g humic; Ctrl: control (non treated).