Fig. 3From: Fulvic acid foliar application: a novel approach enhancing antioxidant capacity and nutritional quality of pistachio (Pistacia vera L.)The impacts of different concentrations and application times of fulvic acid on K (a) and Zn (b) content of ‘Kaleh-Ghoochi’ pistachio nut. Different letters show significant differences among means according to the Duncan test at P < 0.05Back to article page