Soil Potassium
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 2 benchmarks together — the OptimalRange form drives the primary score, while 1 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
The proposed optimal range for ecological health is: For Sandy Loams: 121-200 mg/kg
Colwell K soil potassium concentration in mg/kg
Optimal range for soil potassium supporting robust native plant communities in sandy loam soils.
Derived from agronomic 'Ideal' and 'Adequate' categories interpreted for native ecosystems.
Sources (2)
Understanding soil tests for pastures | Soil | Farm management ...
View SourceAgriculture Victoria. (2025). Understanding soil tests for pastures. Farm Management.
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space-for-time study in the Great Barrier Reef catchments, Australia - CSIRO Publishing, accessed July 17, 2025
View Sourcewww.act.gov.au, accessed May 11, 2025
View Source