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Table 2 Properties of NPK fertilizer and cow dung used

From: Factorial design study of total petroleum contaminated soil treatment using land farming technique

Parameters

Cow dung

NPK fertilizer

pH

8.27

9.62

Organic carbon (%)

14.36

8.06

Total nitrogen (%)

40.65

58.40

Phosphate (mg kg−1)

23.68

26.07

Potassium (mg kg−1)

17.49

7.83

Magnesium (mg kg−1)

5.88

11.35

Calcium (mg kg−1)

1.42

37.55

Sodium (mg kg−1)

1.94

1.06