Vegetables’ nutrient concentrations

Parameter

n

Mean

SD

Min

Max

K (%)

22

4.143

1.54

0.38

6.53

Zn (mg/kg)

22

28.23

14.18

1.77

57.63

Fe (mg/kg)

22

316.71

267.37

17.26

1235.00

Cu (mg/kg)

22

8.29

4.93

1.87

21.66

Soil properties

pH (H₂O)

22

8.02

0.60

6.41

8.73

EC (dS/m)

22

0.25

0.13

0.01

0.41

CEC (cmolc/kg)

22

15.73

3.63

10.80

24.20

P (mg/kg)

22

15.19

9.93

3.22

31.71

Zn (mg/kg)

22

2.63

1.75

0.45

7.36

Fe (mg/kg)

22

12.66

8.93

3.29

42.50

Cu (mg/kg)

22

1.25

0.28

0.83

1.98

Pearson correlation coefficients (r)

Soil Zn

Soil Fe

Soil CEC

Soil pH

Vegetable K

22

−0.216

0.447*

−0.162

−0.686*

Vegetable P

22

0.207

0.407

−0.472*

−0.496*

Vegetable Zn

22

0.026

0.417

−0.501*

−0.571*

Vegetable Fe

22

−0.439*

−0.172

0.126

−0.055