Sample parameters

1 ML + EW

1 ML + SOIL

2 ML + EW

2 ML + SOIL

3 ML + EW

3 ML + SOIL

Potassium

0.386 ± 0.001^a

0.403 ± 0.001^b

0.423 ± 0.001^a

0.348 ± 0.001^b

0.404 ± 0.001^a

0.300 ± 0.001^b

Nitrate

29.87 ± 0.06^a

31.40 ± 0.10^b

26.40 ± 0.10^a

36.13 ± 0.06^b

40.80 ± 0.10^a

40.77 ± 0.06^a

Phosphate

62.40 ± 0.10^c

28.90 ± 0.10^a

38.60 ± 0.10^a

28.60 ± 0.02^b

48.20 ± 0.10^a

28.23 ± 0.12^b

Phosphorus

20.80 ± 0.10^b

9.65 ± 0.01^a

12.90 ± 0.05^a

9.54 ± 0.01^b

16.10 ± 0.01^a

9.44 ± 0.01^b

TPH

109.8 ± 0.058^a

137.3 ± 0.12^b

223.8 ± 0.10^a

374.1 ± 0.01^b

287.5 ± 0.01^a

585.5 ± 0.01^b

Total organic carbon

2.769 ± 0.00^b

3.392 ± 0.002^a

3.452 ± 0.001^a

3.822 ± 0.00^b

3.686 ± 0.00^a

3.867 ± 0.05^b