3. Results and discussion
3.1. Metal contents in soils and leaves
The average results obtained for mineral element contents in soil and leaf are given in Table 1. It can be seen from the values reported for the soil that Ca is the most abundant element (108.7 g kg− 1) with values that are higher than world levels (15.00 g kg− 1). The values obtained for K (16.36 g kg− 1) are slightly higher than the world average (14.00 g kg− 1). The opposite trend was found for Fe (22.06 vs. 40.00 g kg− 1), Mn (0.38 vs. 1.00 g kg− 1), Al (53.96 vs. 71.00 g kg− 1) and Zn (32.57 vs. 78.50 g kg− 1).