Research Article
Levels of Biochar and NPS Fertilizer Rates on Growth, Yield Component, and Yield of Maize (Zea mays L.) at Guto Gida, Western Ethiopia
Table 1
Physico-chemical characteristics of study site soil before planting and corn cob biochar nutrient composition at Guto Gida, Western Ethiopia.
| | Parameters | Presowing soil properties | Nutrient composition of maize cob biochar |
| | Particle distribution (%) | | — | | Clay | 28 | — | | Silt | 18 | — | | Sand | 54 | — | | Textural class | Sandy clay loam | — | | Chemical properties | — | — | | pH (H2O) 1 : 2.5 (w/v) | 4.74 | 8.31 | | Organic carbon (g·kg−1) | 3.4 | 412 | | Organic matter (g·kg−1) | 5.9 | 710 | | Total nitrogen (g·kg−1) | 1.12 | 2.67 | | Available phosphorus (mg·kg−1) | 6.92 | 1.83 | | Exchangeable Ca (cmol/kg) | 4.36 | 4.41 | | Exchangeable Mg (cmol/kg) | 3.60 | 3.47 | | Exchangeable K (cmol/kg) | 1.25 | 6.30 | | CEC (cmol/kg) | 12.43 | 139 |
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CEC stands for cation exchange capacity.
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