Models

GrassGro is composed of a number of sub models. The illustration below shows briefly how they interact.

More details about the sub models

Water Balance Model

Pasture Model

Multi-species model

Daily time step

Uniform field area

Biomass-based

Processes modelled

Phenology
Resource acquisition
Net primary productivity
Allocation of assimilate
Change in DMD
Death & litter fall
Seeds & seedlings

Ruminant Model

Based on Australian feeding standard - Dr Mike Freer
Intake
- Potential intake
- relative intake
Energy and protein use

Mortality

Management & Economics Models

Five livestock enterprises
Profit drivers
- Stocking rate and replacement policy
- Reproductive management
- Supplementary feeding
- Soil fertility
- Shearing
Gross margin calculations
- Long-term average and year-to-year variability

For a description of the animal model in GrassGro see the GrazFeed-models page on this website.