GRASP

GRASP (Grass Production Model) simulates grass production and predicts outcomes of management decisions about soil water, pasture growth and animal feeding.

Read about our selection process for including tools on Climate Kelpie

 

Who this tool is for

Researchers investigating the effects of soil, climate, pasture and management on pasture production.
GRASP is applicable to native and established improved pasture systems, especially tropical systems.

Researchers investigating the effects of soil, climate, pasture and management on pasture production.

GRASP is applicable to native and established improved pasture systems, especially tropical systems.

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Questions this tool answers

How do soil water, pasture growth, grazing, perennial shrubs and trees interact, especially in tropical and subtropical Australian native and improved pasture systems?

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What this tool does

GRASP predicts the effects of various soil, climate, pasture and management inputs on:

  • the water balance (runoff, infiltration, soil evaporation, transpiration and drainage)
  • pasture growth (green growth, death and detachment)
  • animal intake (diet selection, utilisation and live weight gain)

GRASP is the model used by AussieGRASS.

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Inputs

GRASP uses daily climate records from SILO.

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Outputs

The output from GRASP is designed to be used in other applications that present the information.

For example, GRASP is the underlying model used by AussieGRASS.

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Reliability

GRASP is accurate across various scales, from paddock to farm to region.

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History

Development of GRASP was funded by Queensland Primary Industries and Fisheries. Various funding agencies have contributed to its ongoing development. Dr Greg McKeon was the prime developer with contributions from many other researchers.

GRASP is now owned by the Queensland Department of Environment and Resource Management.

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Support available

Contact Ken Day, Queensland Department of Environment and Resource Management

Email: Ken.A.Day@climatechange.qld.gov.au

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Where to get it

GRASP is currently being upgraded. The current version is still available.

Contact Ken Day, Queensland Department of Environment and Resource Management

Email: Ken.A.Day@climatechange.qld.gov.au

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Cost

Free

GRASP users are expected to collaborate with the developers and share data.

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