Soil pH
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 19 benchmarks together — the OptimalRange form drives the primary score, while 18 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Upper Detrimental Threshold: Detrimental effects begin to appear above pH(CaCl₂) ~7.0, with significant issues emerging above pH 7.5.
Soil pH measured in calcium chloride solution (pH(CaCl₂)) representing the upper detrimental threshold above which ecological imbalances and micronutrient deficiencies occur.
The pH(CaCl₂) level above which micronutrient deficiencies and ecological imbalances begin to occur in the Tropical & Subtropical Maritime Islands biome.
Evidence indicates that pH above 7.0 leads to micronutrient deficiencies and ecological imbalance in naturally acidic soils.
Sources (1)
VEGETATION 0}' LORD HOWE ISLAND - Botanic Gardens of Sydney
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