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 3 benchmarks together — the OptimalRange form drives the primary score, while 2 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
soil testing conducted on land actively used for agricultural production demonstrates optimal soil pH levels ranging from 6.1 to 6.9 (measured in water) for most vegetable crops.
Soil pH measured in water suspension
Optimal soil pH range for productive agricultural sites on volcanic-derived soils.
This range is the result of deliberate management (e.g., organic matter addition, appropriate liming) to ameliorate natural acidity, representing a best available condition for sustainable crop production.
Sources (1)
VEGETATION 0}' LORD HOWE ISLAND - Botanic Gardens of Sydney
View SourceSupporting Sources (36)
Additional references from the underlying research that informed this benchmark.
Caritat, P. de, & Cooper, M. (2011). The pH of Australian soils: Field results from a national survey. Soil Research, 49, 172-182.
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