Research Article
Soil Characteristics and Pedoclimatic Evaluation of Rainfed Sorghum (Sorghum bicolor (L.) Moench) in the Mayo-Lemié Division, South-Western Chad
Table 2
Chemical composition of the studied soils.
| Profile | Depth (cm) | SiO2% | Al2O3% | Fe2O3% | K2O% | Na2O% | CaO% | MgO% | P2O5% | SO3% | LOI% | Total | | |
| M3 | 0–26 | 76.07 | 6.27 | 2.64 | 3.05 | 0.47 | 0.83 | 0.20 | 0.03 | 0.05 | 10.37 | 99.98 | 9.83 | 0.49 | 26–156 | 58.45 | 7.76 | 5.73 | 4.24 | 1.10 | 9.40 | 0.62 | 0.00 | 0.22 | 10.68 | 98.20 | 6.10 | 0.55 | 156–186 | 63.94 | 12.22 | 6.01 | 1.60 | 0.21 | 0.83 | 0.14 | 0.02 | 0.07 | 14.46 | 99.50 | 4.24 | 0.13 |
| M2 | 0–10 | 79.80 | 7.86 | 3.18 | 2.75 | 0.43 | 0.54 | 0.21 | 0.01 | 0.06 | 4.06 | 98.90 | 8.22 | 0.35 | 10–30 | 57.77 | 8.18 | 5.87 | 4.10 | 0.82 | 4.46 | 0.44 | 0.03 | 0.10 | 17.98 | 99.75 | 5.72 | 0.50 | 30–75 | 66.37 | 11.65 | 5.33 | 2.70 | 0.53 | 0.72 | 0.35 | 0.02 | 0.06 | 11.31 | 99.05 | 4.61 | 0.23 | 75–175 | 64.29 | 11.90 | 5.97 | 3.02 | 0.69 | 1.09 | 0.55 | 0.07 | 0.29 | 11.85 | 99.72 | 4.38 | 0.25 | 175–215 | 74.72 | 8.06 | 4.44 | 2.50 | 0.44 | 0.78 | 0.41 | 0.02 | 0.05 | 7.69 | 99.09 | 7.51 | 0.31 |
| M1 | 0–11 | 68.82 | 8.20 | 6.16 | 3.49 | 0.56 | 1.55 | 0.34 | 0.05 | 0.12 | 9.20 | 98.50 | 6.80 | 0.43 | 11–80 | 54.97 | 15.42 | 8.22 | 2.74 | 0.39 | 0.39 | 0.48 | 0.03 | 0.06 | 16.64 | 99.33 | 2.89 | 0.18 | 80–154 | 75.89 | 7.47 | 2.97 | 2.65 | 0.34 | 0.60 | 0.21 | 0.02 | 0.05 | 8.69 | 98.89 | 8.23 | 0.35 | 154–205 | 69.43 | 6.72 | 4.72 | 3.03 | 0.62 | 0.50 | 0.31 | 0.00 | 0.09 | 14.02 | 99.45 | 8.38 | 0.49 |
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