Start | Index | Overview • PREV | UP | NEXT The sim components in the package lintul5 implement the Lintul5 algorithms from (L5). They are designed to reproduce same results (up to rounding errors) as the original FST program.
The original model is subdivided into multiple sim components (which should be used in the following order to be as close as possible to the original algorithm).
Daylength calculation is performed by the transformer component AstronomicParametersTransformer
Phenology component calculates the phenology part
The component calculates phenology according to original model's CROPP() routine.
It takes inputs from the AstronomicParametersTransformer.
It's outputs are used by WaterBalance, RadiationUseEfficiency and Lintul5.
For documentation of the algorithms please consult the orginal documentation (L5)
Has additional inputs iDoSow and iDoHarvest. The main routine starts running when iDoSow is true and runs every day until iDoHarvest is true.
Within the calculation, the component checks - as in original Lintul5 - whether it should start at planting or at emergence and begins phenology development when CURRENT.DOY equals cIDPL or cIDEM. Therefore you have to make sure that iDoSow occurs before or at cIDPL resp. cIDEM, otherwise development won't start.
For the different phenology events, the day of year and date are output. There are as well booleans that become true only on the day when the event occurs and booleans that stay true when the event occurs until resetting/re-initialisation.
CropCycleCount is incremented at every DoHarvest.
The phenology model has included vernalisation as in (L4V). By default vernalisation is switched off, so the model calculates as original Lintul5. To switch on vernalisation, the user has to provide the adequate parameters for vernalisation and to set cIDSL to 2.
| Content Type | Name | Description | Data Type | Unit | Min Value | Max Value | Default Value |
|---|---|---|---|---|---|---|---|
| constant | cDTSMTB | increase in temperature sum as dependent on mean daily temperature | DOUBLEARRAY | °C d | - | - | -5.0 0.0 0.0 0.0 30.0 30.0 45.0 30.0 |
| constant | cDVSI | initial development stage of crop (from 0 to 2) | DOUBLE | 1 | - | - | 0.0 |
| constant | cIDEM | Day of emergence | INT | 1 | 0 | 366 | 0 |
| constant | cIDPL | Day of planting | INT | 1 | 0 | 366 | 0 |
| constant | cIDSL | development from emergence to flowering depends on temperature (=0), temperature + day length (=1), temperature + day length + vernalisation (=2) | INT | 1 | - | - | 0 |
| constant | cPHOTTB | table of development rate reduction until flowering by daylength | DOUBLEARRAY | 1 | - | - | 0.0 0.0 8.0 1.0 12.0 1.0 18.0 1.0 |
| constant | cPL | start at planting | BOOLEAN | 1 | - | - | true |
| constant | cTBASEM | lower threshold temp. for temperature sum increase before emergence | DOUBLE | °C | -30.0 | 50.0 | 0.0 |
| constant | cTEFFMX | max. eff. temp. for temperature sum increase before emergence | DOUBLE | °C | -30.0 | 50.0 | 30.0 |
| constant | cTSUM1 | temperature sum required for vegetative period (from emergence to flowering) | DOUBLE | °C d | 0.0 | 7000.0 | 1050.0 |
| constant | cTSUM2 | temperature sum required for generative period | DOUBLE | °C d | 0.0 | 7000.0 | 1000.0 |
| constant | cTSUMEM | required temperature sum for crop emergence | DOUBLE | °C d | 0.0 | 7000.0 | 60.0 |
| constant | cTSUMMilkripeness | temperature sum from anthesis to milkripeness | DOUBLE | °C d | 0.0 | 7000.0 | 700.0 |
| constant | cVBASE | Vernalisation base thermal day | DOUBLE | d | - | - | 0.0 |
| constant | cVERNRT | Vernalisation factor dependend by average temperature | DOUBLEARRAY | 1 | - | - | 0.0 1.0 1.0 1.0 |
| constant | cVERSAT | Vernalisation max thermal day | DOUBLE | d | - | - | 0.0 |
| constant | cVernalisationDevStage | maximal devstage up to which vernalisation is applied | DOUBLE | 1 | - | - | 0.3 |
| input | iDDLP | Photoperiodic daylength | DOUBLE | h | - | - | 0.0 |
| input | iDoHarvest | harvesting | BOOLEAN | 1 | - | - | false |
| input | iDoSow | sowing | BOOLEAN | 1 | - | - | false |
| input | iTMAX | maximal air temperature during day (output of routine WEATHR) | DOUBLE | °C | - | - | 0.0 |
| input | iTMIN | minimal air temperature during day (output of routine WEATHR) | DOUBLE | °C | - | - | 0.0 |
| state | sDVS | development stage of crop (from 0 to 2) | DOUBLE | 1 | 0.0 | - | 0.0 |
| state | sTSULP | temperature sum from sowing/planting | DOUBLE | °C d | 0.0 | - | 0.0 |
| state | sTSUM | temperature sum from emergence | DOUBLE | °C d | 0.0 | - | 0.0 |
| state | sTSUML | temperature sum from emergence inclusive day length effect | DOUBLE | °C d | 0.0 | - | 0.0 |
| state | sVERN | vernalisation days | DOUBLE | d | - | - | 0.0 |
| rate | rDTSULP | increase in temperature sum from planting or sowing | DOUBLE | °C | - | - | 0.0 |
| rate | rDTSUM | actual increase in temperature sum from emergence without reduction (RDAYL) | DOUBLE | °C | - | - | 0.0 |
| rate | rDTSUML | actual increase in temperature sum from emergence with reduction for day length (RDAYL) | DOUBLE | °C | - | - | 0.0 |
| rate | rDVR | rate of phenological development | DOUBLE | d-1 | - | - | 0.0 |
| rate | rRVERNR | vernal day increase rate | DOUBLE | 1 | - | - | 0.0 |
| out | AnthesisDOY | DOY of Anthesis | INT | 1 | 1 | 366 | - |
| out | AnthesisDate | Date of Anthesis | DATE | 1 | - | - | - |
| out | CropCycleCount | Period of Sowing | INT | 1 | 0 | 1000 | 0 |
| out | EMERG | has emerged | BOOLEAN | 1 | - | - | false |
| out | EmergenceDOY | DOY of Emergence | INT | 1 | 1 | 366 | - |
| out | EmergenceDate | Date of Emergence | DATE | 1 | - | - | - |
| out | FLOW | has flowered | BOOLEAN | 1 | - | - | false |
| out | IDEMERG | Day of emergence | INT | 1 | - | - | 0 |
| out | IsAnthesis | true if Anthesis date | BOOLEAN | 1 | - | - | false |
| out | IsEmergence | true if Emergence date | BOOLEAN | 1 | - | - | false |
| out | IsMaturity | true if maturity date | BOOLEAN | 1 | - | - | false |
| out | IsMilkripeness | true if milkripeness date | BOOLEAN | 1 | - | - | false |
| out | IsPhenologyEvent | true if sowing/emergence/anthesis/maturity date | BOOLEAN | 1 | - | - | false |
| out | IsSowing | true if Sowing date | BOOLEAN | 1 | - | - | false |
| out | MATURITY | is mature | BOOLEAN | 1 | - | - | false |
| out | MILKRIPENESS | milkripeness has occured | BOOLEAN | 1 | - | - | false |
| out | MaturityDOY | DOY of Maturity | INT | 1 | 1 | 366 | - |
| out | MaturityDate | Date of Maturity | DATE | 1 | - | - | - |
| out | MilkripenessDOY | DOY of Maturity | INT | 1 | 1 | 366 | - |
| out | MilkripenessDate | Date of Maturity | DATE | 1 | - | - | - |
| out | SOW | is sown | BOOLEAN | 1 | - | - | false |
| out | SowingDOY | DOY of Sowing | INT | 1 | 1 | 366 | - |
| out | SowingDate | Date of Sowing | DATE | 1 | - | - | - |