Table 3.
Effect of lime and biochar on soil chemical properties (pH, N, OC and P).
| Lime (t ha−1) | Biochar (t ha−1) | pH(H20) | N (%) | OC (%) | P (mg kg−1) | ||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | 2020 | 2021 | ||
| 0.0 | 0.0 | 5.30r | 5.28s | 0.10i | 0.14ef | 1.11j | 1.12j | 9..00s | 9.30s |
| 0.0 | 2.5 | 5.30p | 5.40r | 0.14fg | 0.16cd | 1.14h | 1.23cd | 9.50r | 9.80r |
| 0.0 | 5.0 | 5.90n | 5.90p | 0.17bc | 0.17bc | 1.19de | 1.24bc | 10.30qr | 10.60q |
| 0.0 | 7.5 | 6.10m | 6.20n | 0.15df | 0.18bc | 1.23bc | 1.26ab | 10.80pq | 11.40q |
| 0.0 | 10.0 | 6.20lm | 6.30l | 0.16cd | 0.19a | 1.24b | 1.28a | 11.40op | 12.40o |
| 2.5 | 0.0 | 5.50o | 5.80q | 0.10i | 0.13fg | 1.11j | 1.12jk | 10.50pq | 10.80q |
| 2.5 | 2.5 | 5.60o | 6.30l | 0.10i | 0.13fg | 1.12ij | 1.13ij | 11.70o | 11.70pq |
| 2.5 | 5.0 | 6.10m | 6.30l | 0.14fg | 0.14ef | 1.13hi | 1.15h | 14.20n | 13.40n |
| 2.5 | 7.5 | 6.20lm | 6.50k | 0.17bc | 0.16cd | 1.24b | 1.19e | 16.80lm | 15.80m |
| 2.5 | 10.0 | 6.30kl | 6.60i | 0.19a | 0.19a | 1.28a | 1.28a | 18.50kl | 17.70l |
| 5.0 | 0.0 | 6.30kl | 6.30 l | 0.11hi | 0.11i | 1.12ij | 1.12jk | 15.90mn | 18.80k |
| 5.0 | 2.5 | 6.30kl | 5.70q | 0.12ji | 0.12gh | 1.13hi | 1.13ij | 17.40l | 19.70j |
| 5.0 | 5.0 | 6.40ij | 6.10o | 0.13hi | 0.13fg | 1.14h | 1.14hi | 19.60k | 21.80i |
| 5.0 | 7.5 | 6.50i | 6.20n | 0.15df | 0.15de | 1.19de | 1.19e | 20.80jk | 23.60h |
| 5.0 | 10 | 6.70h | 6.30l | 0.17bc | 0.18ab | 1.24b | 1.25bc | 22.30l | 25.80g |
| 7.5 | 0.0 | 6.50i | 6.60i | 0.18ab | 0.17bc | 1.13hi | 1.12jk | 23.40h | 23.90h |
| 7.5 | 2.5 | 6.60i | 6.60j | 0.17bc | 0.18ab | 1.17fg | 1.17fg | 24.60g | 25.30g |
| 7.5 | 5.0 | 6.80h | 6.80h | 0.13gh | 0.19a | 1.18ef | 1.24bc | 26.90f. | 27.10f. |
| 7.5 | 7.5 | 6.90g | 6.80g | 0.15df | 0.19a | 1.19de | 1.25bc | 28.20e | 28.70ef |
| 7.5 | 10.0 | 7.10f | 7.00f | 0.16fg | 0.19a | 1.20d | 1.28a | 30.20d | 30.40d |
| 10.0 | 0.0 | 7.20e | 7.10e | 0.14fg | 0.16cd | 1.13hi | 1.23cd | 28.10e | 28.80e |
| 10.0 | 2.5 | 7.40d | 7.30d | 0.15df | 0.16cd | 1.17fg | 1.24bc | 29.60de | 30.10d |
| 10.0 | 5.0 | 7.80c | 7.70c | 0.17ab | 0.18ab | 1.19de | 1.26ab | 32.40c | 33.30c |
| 10.0 | 7.5 | 8.40b | 8.20b | 0.18df | 0.19de | 1.24b | 1.27ab | 34.60b | 35.80b |
| 10.0 | 10.0 | 8.90a | 8.30a | 0.18a | 0.19a | 1.28a | 1.28a | 38.70a | 37.50a |
| SD | 1.58 | 0.76 | 0.03 | 0.03 | 0.05 | 0.06 | 9.40 | 8.78 | |
| p values | |||||||||
| Lime (L) | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| Biochar (B) | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
| L × B | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |
Values followed by similar letters under the same column are not significantly different at p = 0.05 according to Duncan’s multiple range test.