Table 1.
Soil physical and chemical properties at 0-20 cm depth in relation to different experimental treatments (control, C; biochar single-dose, B; biochar double-dose, BB).
| (C) Control |
(B) Biochar single-dose |
(BB) Biochar double-dose |
|
|---|---|---|---|
| pH | 5.83 ± 0.12 c | 6.41 ± 0.05 b | 6.98 ± 0.07 a |
| Bulk density (g cm-3) | 1.64 ± 0.01 a | 1.59 ± 0.00 b | 1.55 ± 0.01 c |
| Water content (%) | 17.13 ± 0.36 b | 17.50 ± 0.44 b | 20.88 ± 0.39 a |
| CEC (meq 100g-1) | 25.68 ± 0.16 b | 26.14 ± 0.37 ab | 28.10 ± 0.65 a |
| Corg (%) | 1.27 ± 0.06 c | 1.73 ± 0.09 b | 2.31 ± 0.14 a |
| Ntot (%) | 0.44 ± 0.01 b | 0.44 ± 0.01 b | 0.51 ± 0.01 a |
| Kav (mg K2O kg-1) | 192.90 ± 0.39 b | 193.30 ± 0.52 b | 199.30 ± 0.52 a |
| Caav (mg CaO kg-1) | 1453.60 ± 0.68 b | 1454.40 ± 1.71 ab | 1463.40 ± 1.97 a |
| Mgav (mg MgO kg-1) | 939.19 ± 1.06 b | 941.10 ± 0.46 ab | 944.80 ± 2.12 a |
| Naav (mg Na kg-1) | 98.05 ± 0.43 a | 97.910 ± 0.33 a | 98.86 ± 0.41 a |
CEC, cation exchange capacity; org, organic; tot, total; av, available.
Each value represents the mean of 5 replicates (n = 5) ± standard error. Letters a, b, and c indicate significant differences (p < 0.05) between the soil treatments.