Region/

Country

Number of Samples

Types

Ranges

Fe (mg/kg)

Mean

Fe (mg/kg)

Ranges

Zn (mg/kg)

Mean

Zn (mg/kg)

References

Chile

12

TSP

5200.0 - 6800.0

6000.0

43.0 - 883.0

600.0

[29]

DAP

7100.0 - 11,000.0

9100.0

38.1 - 44.5

41.3

Egypt

-

Superphosphate

7600.0

107.80

[28]

Europe (12 Countries)

196

Phosphate

-

-

-

166.0

[27]

Bangladesh

10

TSP

2963.81 - 19,615.84

6793.93

243.33 - 472.52

346.73

This study

DAP

18,398.23 - 23,403.79

20,901.01

348.14 - 4426.17

2387.15

Compost

13,206.78 - 24,484.78

17,067.95

312.73 - 3359.90

1511.22

Ranges

Sc (mg/kg)

Mean

Sc (mg/kg)

Ranges

Sm (mg/kg)

Mean

Sm (mg/kg)

Pakistan

-

SSP

-

-

-

2.02

[41]

DAP

-

-

-

12.0

Brazil

-

SSP

24.6

122.0

[36]

Brazil

-

MAP

-

43.0

[41]

TSP

-

89.0

Egypt

-

Superphosphate

-

3.99

-

-

[28]

Bangladesh

10

TSP

5.74 - 11.80

7.92

6.38 - 26.69

14.807

This study

DAP

6.97 - 8.42

7.694

6.58 - 7.22

6.902

Compost

3.50 - 7.09

4.785

2.19 - 3.88

3.075