WOFOST Parameters

Name

MinValue

MaxValue

DefaultValue

Units

Type

Description

UsePhotoPeriod

0

1

0

unitless

int

If true, account for photoperiod effect on development

SpecificStemAreaFunctionOfDVS_SSATB

0

0.022

0.001

[-, ha kg-1]

double[10,2]

Specific stem area as a function of DVS (SSATB)

SpecificPodArea_SPA

0

0.0005

0

ha kg-1

double

Specific pod area (SPA)

SpecificLeafAreaFunctionOfDVS_SLATB

0

0.022

0.001

[-, ha kg-1]

double[10,2]

Specific leaf area as a function of DVS (SLATB)

RelativeMaintenanceRespirationOfStorageOrgans_RMO

0

0.5

0.003

[kg CH2O kg-1 d-1]

double

Relative maintenance respiration of storage organs (RMO)

RelativeMaintenanceRespirationOfStems_RMS

0

0.5

0.015

[kg CH2O kg-1 d-1]

double

Relative maintenance respiration of stems (RMS)

RelativeMaintenanceRespirationOfRoots_RMR

0

0.5

0.01

[kg CH2O kg-1 d-1]

double

Relative maintenance respiration of roots (RMR)

RelativeMaintenanceRespirationOfLeaves_RML

0

0.5

0.02

[kg CH2O kg-1 d-1]

double

Relative maintenance respiration of leaves (RML)

RelativeIncreaseRespirationRatePer10degreeTempIncrease_Q10

0

5

2

unitless

double

Relative increase respiration rate per 10-degree temperature increase (Q10)

RelativeDeathRateOfStemsFunctionOfDVS_RDRSTB

0

1

0.1

[-, unitless]

double[10,2]

Relative death rate of stems as a function of development stage (RDRSTB)

RelativeDeathRateOfRootsFunctionOfDVS_RDRRTB

0

1

0.1

[-, unitless]

double[10,2]

Relative death rate of roots as a function of development stage (RDRRTB)

ReductionFactorOfGrossAssimFunctionOfLowTmin_TMNFTB

0

1

0.5

[°C; -]

double[10,2]

Reduction factor of gross assimilation rate as function of low minimum temperature (TMNFTB)

ReductionFactorOfAMAXFunctionOfTavg_TMPFTB

0

1

0.5

[°C; unitless]

double[10,2]

Reduction factor of AMAX as function of average temperature (TMPFTB)

ReductionFactorForSenescenceFunctionOfDVS_RFSETB

0

3

1

[-, unitless]

double[10,2]

Reduction factor for senescence function of DVS (RFSETB)

PhotoInsensitivity

1

24

6

hour

double

Daylenght for insensitivity to photoperiod

PhotoInhibition

1

24

14

hour

double

Daylenght to inhibit flowering

ParameterKey

0

0

0

unitless

string

Parameter key

NumberOfInstantsInADayForWhichGrossPhotosynthesisIsEstimated

1

24

3

unitless

int

Number of instants in a day for which gross photosynthesis is estimated

MaximumRootingDepth_RDM

0

1000

30

cm

double

Maximum rooting depth (RDM)

MaximumRelativeIncreaseInLAI_RGRLAI

0

0.8

0.009

m2 m-2 day-1

double

Maximum relative increase in leaf area index (RGRLAI)

MaximumLeafCO2AssimilationRateFunctionOfDVS_AMAXTB

0

100

40

[-; kg ha-1 hr-1]

double[10,2]

Maximum leaf CO2 assimilation rate as function of DVS (AMAXTB)

MaximumDailyIncreaseInRootingDepth_RRI

0

10

1.2

cm day-1

double

Maximum daily increase in rooting depth (RRI)

LowerThresholdTemperatureForAgingOfLeaves_TBASE

-5

18

8

°C

double

Lower threshold temperature for aging of leaves (TBASE)

LightUseEfficiencySingleLeafFunctionOfTavg_EFFTB

-10

50

1

[°C; kg ha-1 hr-1 J-1 m2 s]

double[10,2]

Light use efficiency single leaf function of average temperature (EFFTB)

LifeSpanOfLeavesGrowingAt35Celsius_SPAN

10

400

50

day

int

Life span of leaves growing at 35°C (SPAN)

LeafAreaIndexAtEmergence_LAIEM

0.01

0.2

0.1

m2 m-2

double

Leaf area index at emergence (LAIEM)

InitialTotalCropDryWeight_TDWI

0

300

50

kg ha-1

double

Initial total crop dry weight (TDWI)

GrowingDegreeDaysToReachMaturity_TSUM2

200

5000

800

°C-day

int

Temperature sum from anthesis to maturity

GrowingDegreeDaysToReachFlowering_TSUM1

200

5000

800

°C-day

int

Temperature sum from emergence to anthesis

GrowingDegreeDaysToReachEmergence_TSUMEM

10

400

100

°C-day

int

Temperature sum from sowing to emergence (TSUMEM)

FractionOfTotalDryMatterToRootsFunctionOfDVS_FRTB

0

1

0.5

[-; unitless]

double[10,2]

Fraction of total dry matter to roots as function of development stage (FRTB)

FractionOfAboveGroundDryMatterToStorageOrgansFunctionOfDVS_FOTB

0

1

0.5

[-; unitless]

double[10,2]

Fraction of aboveground dry matter to storage organs as function of development stage (FOTB)

FractionOfAboveGroundDryMatterToStemsFunctionOfDVS_FSTB

0

1

0.5

[-; unitless]

double[10,2]

Fraction of aboveground dry matter to stems as function of development stage (FSTB)

FractionOfAboveGroundDryMatterToLeavesFunctionOfDVS_FLTB

0

1

0.5

[-; unitless]

double[10,2]

Fraction of aboveground dry matter to leaves as function of development stage (FLTB)

ExtinctionCoefficientDiffusedLightFunctionOfDVS_KDIFTB

0

1

0.5

[-; unitless]

double[10,2]

Extinction coefficient for diffuse visible light as function of DVS (KDIFTB)

EfficiencyOfConversionIntoStorageOrgans_CVO

0

1

0.684

unitless

double

Efficiency of conversion into storage organs (CVO)

EfficiencyOfConversionIntoStems_CVS

0

1

0.754

unitless

double

Efficiency of conversion into stems (CVS)

EfficiencyOfConversionIntoRoots_CVR

0

1

0.754

unitless

double

Efficiency of conversion into roots (CVR)

EfficiencyOfConversionIntoLeaves_CVL

0

1

0.754

unitless

double

Efficiency of conversion into leaves (CVL)

DevelopmentStageAtHarvest_DVSEND

0

4

2

unitless

double

Development stage at harvest

DailyIncreaseTempSumFunctionOfAverageT_DTSMTB

0

60

0

[°C, °C-day]

double[10,2]

Daily increase in temperature sum as function of average daily temperature (DTSMTB)

CutoffTemperatureDevelopment

10

50

40

°C

double

Cutoff temperature for development

BaseTemperatureForEmergence_TBASEM

-5

18

11

°C

double

Base temperature for emergence (TBASEM)

BaseTemperatureDevelopment

-10

40

10

°C

double

Base temperature for development