Research Article
Compost and Crude Humic Substances Produced from Selected Wastes and Their Effects on Zea mays L. Nutrient Uptake and Growth
Table 1
Selected chemical and physical properties of Bekenu series.
| | Property | Data obtained
(0–25 cm) | Standard data range [1]
(0–36 cm) |
| | pHwater | 4.41 | 4.6–4.9 | | pHKCl | 3.25 | 3.8–4.0 | | CEC (cmol kg−1) | 11.97 | 3.86–8.46 | | Total N (%) | 0.08 | 0.04–0.17 | | Exchangeable (mg kg−1) | 21.02 | Nd | | Available (mg kg−1) | 7.01 | Nd | | Available P (mg kg−1) | 4.85 | Nd | | Exchangeable K (cmol kg−1) | 0.10 | 0.05–0.19 | | Exchangeable Ca (cmol kg−1) | 0.25 | 0.01 | | Exchangeable Mg (cmol kg−1) | 0.34 | 0.07–0.21 | | Exchangeable Na (cmol kg−1) | 0.22 | 0.01 | | C/N ratio | 28.93 | 14-15 | | Organic matter (%) | 4.19 | Nd | | Total carbon (%) | 2.43 | 0.57–2.51 | | Bulk density (g cm−3) | 1.16 | Nd | | Sand % | 71.04 | 72–76 | | Silt % | 14.58 | 8-9 | | Clay % | 14.38 | 16–19 | | Texture | SCL | SCL |
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CEC: cation exchange capacity; Nd: not determined; SCL: sandy clay loam.
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