Research Article
Increasing the Efficiency of Detailed Soil Resource Mapping on Transitional Volcanic Landforms Using a Geomorphometric Approach
Table 3
pH Classifications by USDA.
| | pH value | Classification |
| | 3,5–4,4 | Extremely acid | | 4,5–5,0 | Very strongly acid | | 5,1–5,5 | Strongly acid | | 5,6–6,0 | Moderately acid | | 6,1–6,5 | Slightly acid | | 6,6–7,3 | Neutral | | 7,4–7,8 | Slightly alkaline | | 7,9–8,4 | Moderately alkaline | | 8,5–9,0 | Strongly alkaline |
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