Soil Structure & Compaction
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 5 benchmarks together — the OptimalRange form drives the primary score, while 4 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
The value of 1,500 kPa (1.5 MPa) is the most critical management threshold. It marks the boundary between a healthy, functioning soil and a degraded state.
Penetrometer resistance threshold above which root growth begins to be restricted, indicating soil degradation.
Critical threshold for onset of soil compaction damage affecting root growth in arid inland floodplains production forestry.
Widely cited in soil science literature and GRDC diagnostic criteria as the point where root growth restriction begins.
Sources (1)
Detecting soil compaction
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Additional references from the underlying research that informed this benchmark.
GRDC National Paddock Survey. Fact Sheet: High soil strength - Diagnosing soil constraints.
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