Package net.simplace.sim.components.experimental.amei

Class Vernalisation

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.experimental.amei.Vernalisation

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

public class Vernalisation
extends net.simplace.sim.model.FWSimComponent

Reduces daily temperature increment by vernalisation and photoresponse.

Vernalisation

Vernalisation days

The daily increment of vernalisation days is determined by daily average temperature iDAVTEMP

\[ \begin{eqnarray} VDI(iDAVTEMP) & = & \left\{ \begin{array}{l} 0 & \text{if} \quad iDAVTEMP \lt cTlowCritical\\ \frac{iDAVTEMP - cTlowCritical}{cTlow - cTlowCritical} & \text{if} \quad cTlowCritical \le iDAVTEMP \lt cTlow \\ 1 & \text{if} \quad cTlow \le iDAVTEMP \lt cThigh \\ \frac{cThighCritical - iDAVTEMP}{cThighCritical - cThigh} & \text{if} \quad cThigh \le iDAVTEMP \lt cThighCritical \\ 0 & \text{if} \quad cThighCritical \le iDAVTEMP\\ \end{array} \right. \end{eqnarray} \]

And sVernalDays is incremented by VDI(iDAVTEMP).

Vernalisation factor

VernalisationFactor (VF) is determined by the sVernalDays (VD)

\[ \begin{eqnarray} VF(VD) & = & \left\{ \begin{array}{l} 0 & \text{if} \quad VD \lt cVernalDaysMin\\ \frac{VD - cVernalDaysMin}{cVernalDaysMax - cVernalDaysMin} & \text{if} \quad cVernalDaysMin \le VD \lt cVernalDaysMax \\ 1 & \text{if} \quad cVernalDaysMax \le VD \\ \end{array} \right. \end{eqnarray} \]

Applying Vernalisation

Before anthesis:

\[ \begin{eqnarray} RTSUM & = & iTSumBaseAnt \cdot Min(PhotoPeriodeFactor, VernalisationFactor) \end{eqnarray} \]

After anthesis:

\[ \begin{eqnarray} RTSUM & = & iTSumBaseMat \cdot Min(PhotoPeriodeFactor, VernalisationFactor) \end{eqnarray} \]

cApplyPhotoresponse and cApplyVernalisation control whether photoresponse, vernalisation or both are applied. If the control variables are false, the coresponding factor is always 1, meaning that the effect is not applied.

The state sVernalDays has to be reset on each sowing. Therefore the input iDoSow has to be provided.

References

Goudriaan, H.H. Van Laar, 1994. Modelling Potential Crop Growth Processes, Kluwer Academic Publishers, Dordrecht (1994) 238 pp

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cApplyVernalisation	Flag to activate vernalisation (True: crops requiring vernalisation for flower initialisation	BOOLEAN	1	-	-	true
constant	cThigh	Upper temperature threshold for vernalisation; days with higher mean air temperature are not fully considered as a vernalisation day	DOUBLE	°C	-40.0	50.0	10.0
constant	cThighCritical	Upper temperature threshold for vernalisation; days with higher mean air temperature don't contribute at all for vernalisation day	DOUBLE	°C	-40.0	50.0	17.0
constant	cTlow	Lower temperature threshold for vernalisation, days with lower mean air temperature are not fully considered as a vernalisation day	DOUBLE	°C	-40.0	50.0	3.0
constant	cTlowCritical	Lower critical temperature threshold for vernalisation, days with lower mean air temperature don't contribute at all for vernalisation day	DOUBLE	°C	-40.0	50.0	-4.0
constant	cVernalDaysMax	Crop specific maximum number of days required for vernalisation	INT	1	0	400	70
constant	cVernalDaysMin	Crop specific minimum number of days required for vernalisation	INT	1	0	100	10
input	iDAVTMP	Daily mean air temperature	DOUBLE	°C	0.0	50.0	-
input	iDevStage	Development stage of the crop (1.0=anthesis, 2.0=physiological maturity)	DOUBLE	1	0.0	3.0	-
input	iDevStageBaseShoot	Development stage for base shoot	DOUBLE	1	0.0	10000.0	0.5
input	iDoSow	true if sowing day	BOOLEAN	1	-	-	false
input	iPhotoPeriodFactor	PhotoPeriodFactor	DOUBLE	1	0.0	1.0	-
input	iTSumBaseAnt	Daily effective temperature before anthesis	DOUBLE	°C	0.0	10000.0	-
input	iTSumBaseMat	Daily effective temperature after anthesis	DOUBLE	°C	0.0	10000.0	-
input	iTSumBaseShoot	Daily effective temperature after shooting - if given	DOUBLE	°C	0.0	10000.0	-
state	sVernalDays	actual Vernal Days	DOUBLE	1	0.0	400.0	0.0
out	DayLength	Day Length in minutes	INT	min	0	1441	0
out	RTSUM	Daily effective temperature used to calculate the temperature sum and development stage at a given day	DOUBLE	°C	0.0	50.0	-
out	VernalisationFactor	daily vernalisation factor	DOUBLE	1	0.0	1.0	0.0

Nested Class Summary

Nested classes/interfaces inherited from class net.simplace.sim.model.FWSimComponent

net.simplace.sim.model.FWSimComponent.TEST_STATE

Field Summary

Fields inherited from class net.simplace.sim.model.FWSimComponent

iFieldMap, iFrequence, iInputMap, iJexlRule, iMasterComponentGroup, iName, iOrderNumber, isComponentGroup, iSimComponentElement, iSimModel, iVarMap

Constructor Summary

Constructors

Constructor	Description
Vernalisation()	Empty constructor used by class.forName()
Vernalisation(String aName, HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap, HashMap<String,String> aInputMap, org.jdom2.Element aSimComponentElement, net.simplace.sim.util.FWSimVarMap aVarMap, int aOrderNumber)	Called by Clone method only

Method Summary

Modifier and Type	Method	Description
protected net.simplace.sim.model.FWSimComponent	clone(net.simplace.sim.util.FWSimVarMap aVarMap)
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	createVariables()	Create the FWSimVariables as interface for this SimComponent
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	fillTestVariables(int aParamIndex, net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)	called for single component test to check the components algorithm.
protected void	init()
protected void	process()
protected void	reset()

Methods inherited from class net.simplace.sim.model.FWSimComponent

addVariable, bind, checkCondition, createSimComponent, createSimComponent, createSimComponent, createSimComponent, doProcess, getConstantVariables, getContentType, getCreateFormXML, getDescription, getEditFormXML, getFieldMap, getFrequence, getFrequenceRuleScript, getInputs, getInputVariables, getMasterComponentGroup, getName, getOrderNumber, getOutputVariables, getVariable, getVariableField, getVarMap, initialize, isConditionCheck, isVariableAvailable, performLinks, performLinks, readInputs, removeVariable, reset, runComponentTest, setVariablesDefault, toComponentLinkingXML, toDocXML, toGroupXML, toOutputDefinitionXML, toResourcesDataXML, toResourcesDefinitionXML, toString, toXML, writeVarInfos

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Vernalisation

public Vernalisation(String aName,
 HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap,
 HashMap<String,String> aInputMap,
 org.jdom2.Element aSimComponentElement,
 net.simplace.sim.util.FWSimVarMap aVarMap,
 int aOrderNumber)

Called by Clone method only

Parameters:

aName -

aFieldMap -

aInputMap -

aSimComponentElement -

aVarMap -

aOrderNumber -

Vernalisation

public Vernalisation()

Empty constructor used by class.forName()

Method Details

createVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> createVariables()

Create the FWSimVariables as interface for this SimComponent

Specified by:

createVariables in interface net.simplace.sim.util.FWSimFieldContainer

Specified by:

createVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.createVariables()

init

protected void init()

Specified by:

init in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.init()

reset

protected void reset()

process

protected void process()

Specified by:

process in class net.simplace.sim.model.FWSimComponent

fillTestVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> fillTestVariables(int aParamIndex,
 net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)

called for single component test to check the components algorithm.

Specified by:

fillTestVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• net.simplace.sim.util.FWSimFieldContainer#fillTestVariables(int aParamIndex, TEST_STATE aDefineOrCheck)

clone

protected net.simplace.sim.model.FWSimComponent clone(net.simplace.sim.util.FWSimVarMap aVarMap)

Specified by:

clone in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.clone(net.simplace.sim.util.FWSimVarMap)