Soil Electrical Conductivity (EC)

AUS-TMI-AGR-SEC General Moderate confidence

Benchmark Value

0.15 dS/m
Thresholds: Lower: 0.15, Upper: —
Direction: Higher is desirable ↑
Form: LowerThreshold

Evidence & Context

A lower critical threshold of < 0.15 dS/m is proposed. Below this value, the soil is considered to be in a state of compromised ecological function for agricultural use.

Metric Definition:

Soil Electrical Conductivity (EC) measured as a proxy for soluble nutrient availability in soil.

Benchmark Definition:

Critical lower threshold of soil EC below which nutrient availability and retention are compromised.

Justification:

Based on general soil health guidelines and CSIRO soil analysis manual rating system classifying values below 0.15 dS/m as 'Very low'.

Sources (1)

Preview of Soil Analysis Methods and Results Interpretation ... - CSIRO Research
Soil Analysis Methods and Results Interpretation ... - CSIRO Research Journal

Soil Analysis Methods and Results Interpretation ... - CSIRO Research

View Source

Supporting Sources (3)

Additional references from the underlying research that informed this benchmark.

Preview of Characteristics of Coral Cay Soils at Coringa-Herald Coral Sea Islands - ResearchGate
Characteristics of Coral Cay Soils at Coringa-Herald Coral Sea Islands - ResearchGate
Contextual Support Journal

Characteristics of Coral Cay Soils at Coringa-Herald Coral Sea Islands - ResearchGate

View Source
Preview of Salinity and mulching in banana production - Yara Australia
Salinity and mulching in banana production - Yara Australia
Contextual Support GreyLiterature

Salinity and mulching in banana production - Yara Australia

View Source
Preview of To evaluate the values of electrical conductivity and growth parameters of apple saplings in nursery fields - CiteSeerX
To evaluate the values of electrical conductivity and growth parameters of apple saplings in nursery fields - CiteSeerX
Contextual Support

To evaluate the values of electrical conductivity and growth parameters of apple saplings in nursery fields - CiteSeerX

View Source

Context

  • Region Australia
  • Biome Tropical & Subtropical Maritime Islands
  • Land Use Agricultural Crop Production
  • Assessment Pristine Reference
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 19 Mar 2026

Notes

Indicates a degraded state with poor nutrient retention capacity due to high leaching.