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 5 benchmarks together — the OptimalRange form drives the primary score, while 4 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
A soil available phosphorus level below 5 mg/kg is considered critically low for maintaining the essential functions and long-term productivity of a sustainable production forestry system in this biome.
Available soil phosphorus concentration measured by Colwell-P or equivalent method
This benchmark defines the critical lower threshold of soil available phosphorus below which the productivity and sustainability of production forestry in this biome are compromised.
Derived from controlled experiments showing significant growth limitation in Eucalyptus species at available P levels of approximately 4.5 mg/kg.
Sources (1)
(PDF) Establishment of critical nutrient levels in soil and plant for eucalyptus - ResearchGate
View SourceSupporting Sources (3)
Additional references from the underlying research that informed this benchmark.
Establishment of critical nutrient levels in soil and plant for eucalyptus
View Source
Phosphorus nutrition of phosphorus-sensitive Australian native plants: threats to plant communities in a global biodiversity hotspot - PMC
View SourcePhosphorus uptake and toxicity are delimited by mycorrhizal symbiosis in P-sensitive Eucalyptus marginata but not in P-tolerant Acacia celastrifolia - PubMed Central
View Source