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Table 1 Physico-chemical characteristics of soil under Berseem cultivation

From: Heavy metals bioaccumulation in Berseem (Trifolium alexandrinum) cultivated in areas under intensive agriculture, Punjab, India

Physico-chemical properties

Sites

Site I

Site II

Site III

Site IV

pH

7.99 ± 0.25

7.60 ± 0.71

7.38 ± 0.94

7.88 ± 0.74

Conductivity (mS/cm)

0.723 ± 0.066

0.307 ± 0.038

0.617 ± 0.089

0.440 ± 0.057

Sand (%)

88.33 ± 3.36

76.67 ± 9.43

90.33 ± 3.32

85.33 ± 5.31

Silt (%)

8.33 ± 1.64

18.0 ± 2.14

6.33 ± 1.66

10.33 ± 2.31

Clay (%)

3.15 ± 0.66

5.33 ± 1.33

3.66 ± 0.97

4.33 ± 1.01

SOM (%)

2.91 ± 0.89

1.83 ± 0.31

1.88 ± 0.35

2.68 ± 0.21

CaCO3 (%)

5.07 ± 0.33

8.61 ± 0.97

9.04 ± 1.16

5.70 ± 0.78

Ca (meq/100 g soil)

0.87 ± 0.13

0.67 ± 0.06

1.00 ± 0.18

0.49 ± 0.07

Mg (meq/100 g soil)

1.74 ± 0.17

0.94 ± 0.14

0.73 ± 0.09

0.79 ± 0.13

Na (mg/kg)

354.33 ± 11.57

403.50 ± 35.42

404.16 ± 17.76

1073.67 ± 98.92

N (mg/kg)

319.67 ± 76.56

665.15 ± 140.93

114.33 ± 16.65

254.33 ± 42.77

P (mg/kg)

384.91 ± 54.46

49.99 ± 11.57

190.44 ± 27.01

98.15 ± 14.27

K (mg/kg)

1052.83 ± 81.79

1315.72 ± 71.98

1183.33 ± 87.66

1559.67 ± 101.03

  1. SOM, soil organic matter, CaCO 3 Carbonates, Ca calcium, Mg magnesium, Na sodium, N Kjehldal nitrogen, P available phosphorous, K potassium