Soil type

Metals (mg/kg)

Ca²⁺

Fe

Mg

${\text{NO}}_3^{-}$

${\text{PO}}_4^{3-}$

K

Burnt

241.69 ± 55.96

10743.75 ± 1508.39

650.18 ± 145.74

85.06 ± 22.63

284.75 ± 42.73

171.54 ± 27.40

Unburnt

234.22 ± 86.02

8854.02 ± 1734.86

497.12 ± 116.22

60.93 ± 10.35

193.38 ± 50.49

135.95 ± 14.80