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Table 4 Rating for nutrient availability
From: Land evaluation for crop production in Upper Kabete Campus field, University of Nairobi, Kenya
| Rating | Soil reaction (pH) | CEC |
|---|---|---|
| 1 | 5.6–7.3 | ≥ 24 |
| 2 | 5.1–5.5 | 16–24 |
| 3 | 4.5–5.0 | 10–15 |
| 4 | < 4.5 | < 10 |
