Table 2.
Pot study with rice crop: effect of different biochar treatments on the measured plant growth parameters under Al untreated (Al0: 0 mg kg−1) and Al treated soil (Al500: 500 mg kg−1).
| Treatments | Plant height (cm) | Shoot dry weight (g) | Root dry weight (g) | Root length (cm) | ||||
|---|---|---|---|---|---|---|---|---|
| Al0 | Al500 | Al0 | Al500 | Al0 | Al500 | Al0 | Al500 | |
| Soil | 87.50 ± 2.29 (ab) | 71.03 ± 1.30 (a) | 5.55 ± 0.36 (a) | 2.88 ± 0.51 (a) | 0.93 ± 0.06 (ab) | 0.63 ± 0.09 (a) | 27.66 ± 2.52 (a) | 13.67 ± 0.58 (a) |
| BB 10 t ha−1 | 85.23 ± 2.47 (a) | 74.50 ± 2.78 (ab) | 5.38 ± 0.13 (a) | 3.30 ± 0.74 (ab) | 0.91 ± 0.04 (ab) | 0.71 ± 0.06 (a) | 33.00 ± 3.61 (a) | 15.00 ± 3.00 (ab) |
| BB 20 t ha−1 | 87.87 ± 2.23 (abc) | 78.15 ± 6.53 (ab) | 5.53 ± 0.86 (a) | 4.51 ± 1.12 (ab) | 1.09 ± 0.17 (abc) | 0.77 ± 0.24 (a) | 34.33 ± 9.29 (a) | 16.00 ± 6.00 (ab) |
| WB 10 t ha−1 | 87.86 ± 2.73 (abc) | 80.58 ± 8.34 (ab) | 5.44 ± 0.02 (a) | 4.88 ± 0.97 (ab) | 0.88 ± 0.12 (a) | 0.88 ± 0.08 (a) | 30.67 ± 5.13 (a) | 19.67 ± 0.58 (ab) |
| WB 20 t ha−1 | 92.10 ± 3.20 (abc) | 79.52 ± 5.41 (ab) | 5.72 ± 0.22 (a) | 5.40 ± 0.15 (b) | 0.98 ± 0.10 (ab) | 0.89 ± 0.21 (a) | 32.33 ± 3.21 (a) | 22.00 ± 2.65 (b) |
| RHB 10 t ha−1 | 96.47 ± 3.86 (c) | 79.78 ± 6.33 (ab) | 8.48 ± 0.97 (b) | 3.59 ± 0.33 (ab) | 1.26 ± 0.26 (bc) | 0.65 ± 0.26 (a) | 25.33 ± 0.58 (a) | 18.00 ± 2.00 (ab) |
| RHB 20 t ha−1 | 95.55 ± 4.72 (bc) | 88.32 ± 7.02 (b) | 9.25 ± 0.83 (b) | 5.42 ± 1.51 (b) | 1.46 ± 0.08 (c) | 0.68 ± 0.14 (a) | 27.67 ± 2.52 (a) | 19.33 ± 2.31 (ab) |
BB: bamboo biochar, WB: wood biochar, RHB: rice husk biochar. Each value represents the mean of three replicates ± standard error. Mean values marked with same letters do not differ significantly according to the Tukey’s HSD test at p ≤ 0.05.