Invasive Species Presence

AUS-TGP-AGR-ISP General Moderate confidence

Benchmark Value

10 individuals/m²

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.

Evidence & Context

The key finding was that 72% of the surveyed cropping paddocks contained fewer than 10 grass weeds/mb2 at the time of crop anthesis (flowering).

Metric Definition:

Density of grass weeds per square meter in-crop at anthesis (flowering)

Benchmark Definition:

This benchmark represents the highest documented level of weed suppression in temperate cropping systems, indicating very low grass weed density at crop flowering.

Justification:

Represents the best available condition for in-crop weed management within temperate Australian cropping systems, derived from a high-quality agronomic study.

Sources (1)

Preview of Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing

Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing Journal

Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing

View Source

Supporting Sources (2)

Additional references from the underlying research that informed this benchmark.

Reducing Risk, Securing the Future NSW Invasive Species Management Review Preliminary Report August 2024

Contextual Support GreyLiterature

Reducing Risk, Securing the Future NSW Invasive Species Management Review Preliminary Report August 2024

View Source

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

Context

Region Australia
Biome Temperate Grassy Woodlands & Plains
Land Use Agricultural Crop Production
Assessment Not Stated
Evidence Type TargetCondition

Lifecycle

Status Active
Version 1
Effective From 6 Jun 2026

Notes

This benchmark is a proxy from best-practice Integrated Weed Management systems and represents a state of highly effective suppression, not natural absence. It is specific to annual grass weeds and does not cover perennial environmental weeds or invasive fauna. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TGP-AGR-ISP family.