Soil Electrical Conductivity (EC)

AUS-TSW-AGR-SEC General Moderate confidence

Benchmark Value

0.5 dS/m

Direction: Lower is desirable ↓

Form: MaximumOnly

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

OptimalRange Primary MaximumOnly Guard

Evidence & Context

Proposed Benchmark Value: The reference value of < 0.50 dS/m (ECe) is proposed as the benchmark for high environmental health in this context.

Metric Definition:

Soil Electrical Conductivity (EC) measured as ECe (saturated paste extract)

Benchmark Definition:

This benchmark represents the maximum soil electrical conductivity level indicating high environmental health in agricultural crop production within the temperate semi-arid shrublands and open woodlands biome.

Justification:

This value is selected because it is explicitly labeled as 'Ideal' in a reputable, government-supported agricultural guide. It represents a state where salinity poses a negligible threat to plant growth and soil function. This quantitative target aligns perfectly with the qualitative evidence from successful regenerative systems in the WA Wheatbelt.

Sources (2)

Soil Health Assessment - Natural Resources Conservation Service - USDA, accessed August 5, 2025, Government

Soil Health Assessment - Natural Resources Conservation Service - USDA

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Preview of Which material can be used to reduce electrical conductivity of soil? And what are the disadvantages when electrical conductivity of soil increases ? | ResearchGate, accessed July 9, 2025,

Which material can be used to reduce electrical conductivity of soil? And what are the disadvantages when electrical conductivity of soil increases ? | ResearchGate, accessed July 9, 2025, GreyLiterature

UNDERSTANDING YOUR STEP BY STEP Cath Botta - Goulburn ...

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Supporting Sources (5)

Additional references from the underlying research that informed this benchmark.

Regenerative agriculture in Australia: the changing face of farming - Frontiers, accessed August 4, 2025

Contextual Support Journal

Regenerative agriculture is key to dry season preparation - Soils For Life, accessed July 23, 2025

View Source

Salinity - Murray�darling Basin Authority

Contextual Support Journal

Salinity - Murray–Darling Basin Authority

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Soil - RegenWA

Contextual Support GreyLiterature

Soil - RegenWA

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Soil electrical conductivity (EC) is a measure of the amount ... - USDA

Contextual Support Journal

Regenerative Agriculture - NSW Department of Primary Industries

View Source

Stream-salinity-status-and-trends-in-south-west-WA.pdf - Government of Western Australia, accessed July 10, 2025,

Contextual Support GreyLiterature

Stream-salinity-status-and-trends-in-south-west-WA.pdf - Government of Western Australia, accessed July 10, 2025

View Source

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Agricultural Crop Production
Assessment Conservation Target
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

The benchmark represents an 'ideal' state where salinity is not limiting for plant, microbial, or ecosystem function. It is a proxy for a well-managed farm-scale water cycle, cornerstone of preventing dryland salinity.

Related Benchmarks

Other benchmarks in the AUS-TSW-AGR-SEC family.