CropSyst parameters

Name

MinValue

MaxValue

DefaultValue

Units

Type

Description

ThermalTimeToEmergence

85

400

100

°C-d

int

Thermal Time To Emergence

ThermalTimeToBeginYieldFormation

200

1000

700

°C-d

int

Thermal Time To Begin Yield Formation

ThermalTimeToMaturity

800

2000

1200

°C-d

int

Thermal Time To Maturity

ThermalTimeToFlowering

300

1000

500

°C-d

int

Thermal Time To Flowering

UsePhotoPeriod

0

1

0

unitless

int

if true, account for photoperiod effect on development

UseVernalization

0

1

0

unitless

int

if true, account for vernalization effect on development

BaseTemperatureDevelopment

-10

40

10

°C

double

Base temperature for development

CutoffTemperatureDevelopment

10

50

40

°C

double

Cutoff temperature for development

PhotoInhibition

1

24

14

hour

double

Daylenght to inhibit flowering

PhotoInsensitivity

1

24

6

hour

double

Daylenght for insensitivity to photoperiod

HighTemperature

0

20

5

°C

double

High temperature for optimal vernalization

LowTemperature

-10

10

0

°C

double

Low temperature for optimal vernalization

MinimumFactor

0

1

0

unitless

double

Minimum vernalization factor

A

4

10

7

°C

double

Vernalization A parameter

DaysToStartVernalization

0

30

0

unitless

int

Days requirement to start vernalization

DaysToCompleteVernalization

20

200

50

unitless

int

Days requirement to complete vernalization

InitialLeafAreaIndex

0.001

0.5

0.03

m2 m-2

double

Initial leaf area index

MinimumInitialGreenLeafAreaIndex

0.05

0.2

0.1

m2 m-2

double

Minimum initial green leaf area index

LeafAreaIndexInitialValueShape

1

2

1.5

unitless

double

Leaf area index initial value shape

DevelopmentStageCritical

1

3

3

unitless

double

Development stage beyond which ther is no re-growth

ReGrowthDevelopmentStageCritical

1

2

1.5

unitless

double

Development stage critical for re-growth

MaximumRadiationUseEfficiency

0.1

8

3

g MJ-1

double

Maximum radiation use efficiency

UseCO2

0

1

0

unitless

int

If true, use CO2 effect on photosynthesis

UseTemperature

0

1

0

unitless

int

If true, use temperature effect on photosynthesis

IsC3

0

1

0

unitless

int

Specify if the plant is a C3 or a C4. If true is a C3

BaseTemperatureForGrowth

-10

20

12

°C

double

Base temperature for growth

OptimumTemperatureForGrowth

8

40

28

°C

double

Optimum temperature for growth

ExtinctionCoefficientSolarRadiation

0.1

0.9

0.5

unitless

double

Extinction coefficient for solar radiation

FullCanopyWaterUptakeMaximum

7

13

9

kg m-2 d-1

double

Full canopy water uptake maximum

FullCanopyCoefficient

0

1.18

0.8

unitless

double

ET crop coefficient at full canopy

ThermalTimeToEndGreenLeafAreaIndex

0

1200

600

°C-d

int

Thermal time to end green leaf area index

TranspirationBiomassCoefficient

3

10

5

(kg/m2)kPa)/m

double

Transpiration Biomass Coefficient

NightTemperatureCritical

10

20

15

°C

double

Night Temperature Critical

NightTemperatureMaximum

20

30

25

°C

double

Night Temperature Maximum

PARtoGlobalRadiationFactor

0.4

0.6

0.5

unitless

double

Factor to convert global solar radiation to PAR

SpecificLeafArea

10

40

27

m2 kg-1

double

Specific leaf area at emergence

StemLeafPartition

1

7

3.5

unitless

double

Stem leaf partition coefficient

LAIMaximum

0

12

6

m2 m-2

double

Maximum leaf area index

HeightMaximum

0

4

1

m

double

Maximum plant height

LeafLife

200

1100

600

°C-day

double

Leaf life

MaximumRootingDepth

7

100

30

cm

double

Maximum rooting depth

HarvestIndex

0

1

0.5

unitless

double

Harvest Index