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 2 benchmarks together — the MaximumOnly form drives the primary score, while 1 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Scientific literature consistently indicates that penetrometer resistance values exceeding 2,000 kPa significantly impede root growth for most crops.
Soil penetrometer resistance threshold above which root elongation is significantly restricted.
This benchmark defines the critical upper threshold of soil compaction measured by penetrometer resistance above which root growth and ecological function are significantly impaired in agricultural soils of this biome.
Widely accepted conservative threshold where mechanical impedance significantly restricts root elongation for a broad range of agricultural crops.
Sources (1)
Root Penetration Is Associated with Root Diameter and Root Growth ...
View SourceSupporting Sources (3)
Additional references from the underlying research that informed this benchmark.
Soil Compaction Affects the Growth and Establishment of Street Trees in Urban Australia
View SourceNorfolk Island - Wikipedia
View SourceThornleigh Farm - Lord Howe Island
View Source