Soil Phosphorus
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 7 benchmarks together — the OptimalRange form drives the primary score, while 6 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Lower Critical Threshold: <30 mg/kg is considered deficient, compromising crop health and productivity.
Available soil phosphorus level below which crop health and productivity are compromised.
Minimum available phosphorus level to avoid deficiency in crop production.
Based on documented physiological consequences for plants and soil biological activity at phosphorus levels below 30 mg/kg in Ferrosol soils.
Sources (1)
VEGETATION 0}' LORD HOWE ISLAND - Botanic Gardens of Sydney
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Additional references from the underlying research that informed this benchmark.
NORFOLK ISLAND FOOD SECURITY STRATEGY 2023 - 2028 “Growing the local food economy for a resilient, sustainable and healthy com
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