Sample

P (mg/g)

K (mg/g)

Ca (mg/g)

Mg (mg/g)

Initial material

Control

C1

C2

2.71 ± 0.073

3.28 ± 0.014

3.25 ± 0.020

190.82 ± 0.04

190.76 ± 0.09

189.22 ± 0.04

9.59 ± 0.13

9.71 ± 0.09

9.95 ± 0.1

2.93 ± 0.05

2.53 ± 0.04

5.22 ± 0.064

Compost

Control

C1

C2

2.42 ± 0.011

5.64 ± 0.065

3.29 ± 0.027

191.6 ± 0.011

192.5 ± 0.091

212.71 ± 0.024

12.36 ± 0.27

21.18 ± 0.025

40.28 ± 0.07

7.83 ± 0.59

9.537 ± 0.045

8.07 ± 0.005