Table 2 Chemical properties of raw materials used in the production of biochar.

6.8^b

6.3^a

7.10^b

7.6^c

1.2^a

1.13^a

3.10^c

1.75^b

77.06^b

82.13^b

34.48^a

92.4^c

44.7^b

47.64^b

20.00^a

53.60^c

0.49^a

0.62^a

1.62^b

3.2^c

0.32^a

1.3^b

1.12^b

1.8^c

0.53^a

0.89^b

2.36^b

2.9^b

1.13^a

2.3^a

2.8^ab

3.11^c

0.74^a

0.4^a

1.03^ab

1.14^b

0.14^a

0.19^b

0.21^b

0.13^a

2.14^a

3.11^b

4.13^c

2.4^a

91.22:1^c

76.84:1^b

12.35:1^a

16.75:1^a