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 14 benchmarks together — the OptimalRange form drives the primary score, while 13 guard(s) constrain the result.
Evidence & Context
An extensive body of scientific literature has established that a penetration resistance exceeding 2.0 megapascals (MPa), equivalent to 2000 kilopascals (kPa), represents a significant physical barrier that severely inhibits or halts the elongation of roots for a wide range of agricultural crops.
Soil penetration resistance threshold above which root growth is severely impeded, indicating severe soil compaction and degradation.
This benchmark defines a critical soil penetration resistance threshold indicating severe compaction and root growth inhibition in tropical agricultural soils.
This threshold is supported by multiple studies across crop and soil types, indicating severe physical degradation and compromised ecosystem function above this value.
Sources (1)
High soil penetration resistance reduces sugarcane root system development
View SourceSupporting Sources (6)
Additional references from the underlying research that informed this benchmark.
Soil health: the foundation of sustainable agriculture - 2001 ...
View SourceSoil compaction and controlled traffic considerations in Australian cotton-farming systems, accessed July 17, 2025
View Source
Compendium of Smart Sugar Practices - Queensland Government
View SourceSoil compaction effects on soil health and cropproductivity: an overview - ResearchGate, accessed July 17, 2025
View SourceRanking buffel: Comparative risk and mitigation costs of key ...
View SourceA Revegetation Guide for Sub-Tropical Forest - Greening Australia, accessed July 20, 2025,
View Source