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.
Evidence & Context
The benchmark is presented as an optimal range, bounded by a lower critical threshold where system function is compromised and an upper detrimental threshold where ecological health begins to decline.
Available soil phosphorus measured as Colwell-P in sustainable cropping systems.
This benchmark represents the optimal range of soil phosphorus for sustainable cropping in arid mountain uplands, balancing crop yield and ecological health.
It is derived by integrating agronomic critical thresholds with ecological limits identified in separate literature.
Sources (2)
Regenerative Phosphorus Management - Agresol - Regenerative Agriculture Consulting Australia, accessed August 28, 2025
View SourceSoil phosphorus–crop response calibration relationships and criteria for winter cereal crops grown in Australia - CSIRO Publishing
View SourceSupporting Sources (5)
Additional references from the underlying research that informed this benchmark.
(PDF) A simple phosphorus buffering index for Australian soils - ResearchGate
View Source
What are the optimum nutrient targets for pastures? - Soil Health Knowledgebase
View SourcePhosphorus - Qld | Fact Sheets | soilquality.org.au, accessed July 18, 2025,
View SourcePhosphorus Plays Key Roles in Regulating Plants' Physiological Responses to Abiotic Stresses - MDPI
View SourceSoil phosphorus tests II: A comparison of soil test–crop response relationships for different soil tests and wheat - CSIRO PUBLISHING | Crop and Pasture Science
View Source