Litter Cover

AUS-TMI-AGR-LIT General Moderate confidence

Benchmark Value

70 %

Direction: Higher is desirable ↑

Form: MinimumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Contributing Benchmarks

CompositeFramework Primary MinimumOnly Guard Point Guard OptimalRange Guard OptimalRange Guard Point Guard Point Guard

Evidence & Context

A value of >70% is proposed as the most scientifically defensible benchmark.

Metric Definition:

Litter cover is defined as the proportion of the soil surface covered by non-living, detached plant material such as crop residues (stubble, trash), leaves, and twigs.

Benchmark Definition:

This benchmark represents the minimum litter cover percentage in tropical island agricultural systems that indicates high ecological function and reduced erosion risk.

Justification:

This benchmark is a robust synthesis from highly analogous systems, anchored by studies demonstrating significant erosion control benefits at >70% cover and regulatory minimums for tropical agriculture in Queensland.

Sources (5)

Preview of Benefits of Leaf Litter for Forest Regeneration - Tunley Environmental

Benefits of Leaf Litter for Forest Regeneration - Tunley Environmental Journal

Stubble Retention in Cropping Systems in Southern Australia ..., accessed August 13, 2025

View Source

Managing ground cover on erosion prone soils: Guidelines to follow, accessed July 12, 2025,

Management of sugarcane harvest residues: consequences for soil carbon and nitrogen, accessed July 26, 2025

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Preview of Managing stubble | General agronomy | Crop production | Grains, pulses and cereals - Agriculture Victoria

Managing stubble | General agronomy | Crop production | Grains, pulses and cereals - Agriculture Victoria Government

Managing stubble | General agronomy | Crop production | Grains, pulses and cereals - Agriculture Victoria, accessed August 13, 2025

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Preview of Soil management for sugarcane - NSW Department of Primary ...

Soil management for sugarcane - NSW Department of Primary ... Journal

The effect of litter layer on controlling surface runoff and erosion in ..., accessed July 26, 2025

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The effect of litter layer on controlling surface runoff and erosion in ...

The effect of litter layer on controlling surface runoff and erosion in rubber plantations on tropical mountain slopes, SW China | Request PDF - ResearchGate

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Supporting Sources (5)

Additional references from the underlying research that informed this benchmark.

Maintaining groundcover to reduce erosion and sustain production - NSW Department of Primary Industries, accessed July 22, 2025,

Direct Evidence Journal

Lang, D. (1979). Groundcover for pastures. Journal of Soil Conservation NSW.

View Source

Management of sugarcane harvest residues: consequences for soil carbon and nitrogen

Contextual Support Journal

FARMING SYSTEMS AND THEIR EFFECT ON THE RESPONSE OF SUGARCANE TO NITROGEN By B SALTER - Sugar Research Australia, accessed July 18, 2025

View Source

Nutrient Cycling in Tropical Pastures: What do we know? - ResearchGate

Contextual Support GreyLiterature

Nutrient Cycling in Tropical Pastures: What do we know? - ResearchGate

View Source

Reef protection regulations Banana Erosion and sediment control guide Version 2 - Queensland Government, accessed July 18, 2025,

Regulatory Framework Journal

Repairing gully erosion in Western Australia - Department of Primary Industries and Regional Development, accessed July 27, 2025,

View Source

Reef protection regulations Sugarcane Sediment and erosion control guide Version 2 - Queensland Government

Regulatory Framework Journal

Reef protection regulations Sugarcane Sediment and erosion control guide Version 2 - Queensland Government

View Source

Context

Region Australia
Biome Tropical & Subtropical Maritime Islands
Land Use Agricultural Crop Production
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 3 Jun 2026

Notes

The benchmark >70% represents the threshold for high ecological function in tropical cropping systems, well above the lower critical threshold of 60%. The upper detrimental threshold is not fixed but generally occurs above 90% cover where negative trade-offs increase. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TMI-AGR-LIT family.