Manage pasture

CLEM.Activities.PastureActivityManage

This activity is used to manage an individual pasture resource (field or paddock) using pasture model data for pasture production.

See Managing pasture for an additional simple approach that does not require creating a pasture production data cube.

A single manage pasture activity is required for each pasture (Graze food store type) included in the simulation. This activity will assign the requested Land to the pasture as well as manage the reading of pasture growth from Pasture data reader based on the Land Condition Index and Grass Basal Area that are tracked in the simulation (only when using lookup database pasture input style) and used do develop the pasture growth inputs.

The Manage pasture activity also calculates a number of ecological indicators which are associated with the graze food store type and can be included in output. These simplistic measures track Land condition index, grass basal area, and relate erosion rate, tree basal area, percent runoff, soil carbon, tree carbon to those values.

The following parameters are used to define this activity

This parameter points to one of the defined Land types in the Land group of the Resources available for this simulation. This entry is a drop down list of available Land types.

This parameter points to one of the defined Graze food store types in the Graze food store group of the Resources available for this simulation. This entry is a drop down list of available Graze food store types.

The area provided for this activity will be used to define any initial pasture biomass specified in the Graze food store type component.

This parameter points to one of the defined Pasture file reader or Pasture SQLite file reader added to the simulation tree for this simulation. This entry is a drop down list of Pasture data readers in the simulation tree.

This parameter has been moved to the specified Graze food store type.

The stocking rate (AE/km2) at the start of the simulation.

The area of land required for this pasture. This parameter is not used if using unallocated land is selected.

If this switch is enabled (checked) the unallocated area of land of the selected Land type will be assigned. This area will change as other activities use and return land.

This parameter will determine what action is taken if there are insufficient resources to perform this activity.

You can report an error and stop the simulation, skip this activity or use the resources available. See What to do when resources are limiting

The following components are required to use this activity

When using this activity and the advanced grazing style with pasture production provided from a data-cube, a Land Condition Index (see Tracking land condition and pasture state) versus pasture utilisation Relationship is required below the specified Graze food store type with the Relationship identifier set to Utilisation % to change in land condition. This requires a further Relationship running value component to dynamically track the land condition index during the simulation based on pasture utilisation in each paddock.

For full details see the Graze food store type.

When using the advanced grazing style with pasture production provided from a data-cube, a Grass Basal Area (see Tracking land condition and pasture state) versus pasture utilisation Relationship is required below this Resource typewith the Relationship identifier set to Utilisation % to change in grass basal area. This requires a further Relationship running value component to dynamically track the grass basal area during the simulation based on pasture utilisation in each paddock. This value is then used to look-up the appropriate pasture production from the pasture input database.

For full details see the Graze food store type.

This activity is performed during the Update pasture event of the setup and time-step events. This ensures the pasture production is ready for any grazing or cut and carry activities.

See also