Research Article
Effect of Biochar on Soil Properties, Soil Loss, and Cocoyam Yield on a Tropical Sandy Loam Alfisol
Table 1
Properties of the experimental site and biochar prior to experimentation in 2017.
| | Properties | Soil | Biochar |
| | Sand (%) | 68.1 ± 1.3 | NA | | Silt (%) | 16.2 ± 1.2 | NA | | Clay (%) | 15.7 ± 1.1 | NA | | Textural class | Sandy loam | NA | | Bulk density (Mg m−3) | 1.57 ± 0.04 | 0.60 ± 0.03 | | Porosity (%) | 40.75 ± 1.4 | 77.35 ± 1.5 | | Organic carbon (%) | 1.17 ± 0.03 | 52 ± 1.2 | | Total N (%) | 0.18 ± 0.01 | 0.65 ± 0.02 | | C : N ratio | 6.5 | 80 | | Ash (%) | NA | 0.49 ± 0.01 | | Available P (mg kg−1) | 11.1 ± 0.3 | 0.36 ± 0.01 | | Exchangeable K (cmol kg−1) | 0.10 ± 0.01 | 1.75 ± 0.02 | | Exchangeable Ca (cmol kg−1) | 2.72 ± 0.03 | 4.51 ± 0.1 | | Exchangeable Mg (cmol kg−1) | 0.42 ± 0.01 | 7.75 ± 0.1 | | pH (water) | 5.69 ± 0.04 | 7.61 ± 0.05 | | Electrical conductivity (dS m−1) | 0.11 ± 0.01 | 0.41 ± 0.02 |
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