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.
Evidence & Context
For loamy to clay soils, which have a higher cation exchange capacity and require more potassium to satisfy plant demand, a higher threshold of < 80 mg/kg is defined as critically low.
Critical soil potassium level below which ecosystem health is compromised for loamy to clay soils
Critical potassium threshold below which ecosystem health is compromised for loamy to clay soils.
Based on agronomic deficiency data indicating significant ecological compromise below this level.
Sources (1)
Understanding soil tests for pastures | Soil | Farm management ..., accessed July 17, 2025
View SourceSupporting Sources (49)
Additional references from the underlying research that informed this benchmark.
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