FLNParameterEnvironment
A model that captures the controlled environmental conditions under which Final Leaf Number (FLN) observations were made. It is used to parameterize developmental responses under varying vernalisation and photoperiod conditions in APSIM NG phenology simulations.
Overview
The FLNParameterEnvironment function is part of the phenology module in APSIM NG, specifically under the CAMP parent model. It describes the specific environmental settings such as vernalisation treatment temperature, duration, and photoperiod under which Final Leaf Number (FLN) was observed. These data are used for calibrating genotype responses to temperature and photoperiod cues.
This function serves as a data container and is typically used in experimental or modeling contexts where genotype × environment interactions affecting phenological development are being studied or simulated.
Inputs
The FLNParameterEnvironment function requires the following input parameters:
VrnTreatTemp: Vernalisation treatment temperature (\(^\circ\)C)VrnTreatDuration: Duration of exposure to vernalising temperature (days)TreatmentPp_L: Photoperiod during long-day treatment (hours)TtEmerge: Thermal time from sowing to emergence (degree-days)
Methodology
This function does not contain computational logic or algorithms. Instead, it stores parameter values representing environmental conditions for vernalisation and photoperiod treatments. These inputs can be used by other functions in the APSIM phenology pipeline (e.g., for modeling development rate, phase transitions, or FLN prediction) to simulate plant responses to different environmental conditions.
By encapsulating experimental treatment data, this function supports modular and reusable parameterization within simulation scenarios involving phenological modeling.
Events
Events Listened For
No events are listened by this function.
Events Raised to
No events are raised by this function.
Properties
Configurable and Reportable Properties
| Property | Type | Description |
|---|---|---|
| VrnTreatTemp | double | Vernalisation treatment temperature (\(^\circ\)C) |
| VrnTreatDuration | double | Days of exposure to vernalising temperature |
| TreatmentPp_L | double | Photoperiod under long-day treatment (hours) |
| TtEmerge | double | Observed thermal time from sowing to emergence (degree-days) |
Read-Only Reportable Properties
No read-only properties are available for this function.
User Interface
FLNParameterEnvironment can be added as a child of a CAMP node in the model tree. Right-click the CAMP node, select “Add Model…”, and search for FLNParameterEnvironment in the Filter Box.
Practical Example
No practical example is available for this function.
See Also
- Source code: FLNParameterEnvironment.cs on GitHub