Difference between revisions of "Appendix 10: Parameter Description"

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__NOTOC__
 
{{Expert}}
 
{{Expert}}
 +
==CGMS parameters==
 
{|class="wikitable"
 
{|class="wikitable"
 
! Parameter code !! Table parameter (Y/N)!! Description
 
! Parameter code !! Table parameter (Y/N)!! Description
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|-
 
|-
 
| RDRSTB_10      || Y || ,,
 
| RDRSTB_10      || Y || ,,
−
|-
 
 
|-
 
|-
 
| RFSETB_01      || Y || Reduction factor for senescencs as a function of DVS [-; -]
 
| RFSETB_01      || Y || Reduction factor for senescencs as a function of DVS [-; -]
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|-
 
|-
 
| RFSETB_05      || Y || ,,
 
| RFSETB_05      || Y || ,,
−
|-
 
−
|-
 
 
|-
 
|-
 
| RFSETB_06      || Y || ,,
 
| RFSETB_06      || Y || ,,
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|-
 
|-
 
| SLATB_09      || Y || ,,
 
| SLATB_09      || Y || ,,
−
|-
 
−
|-
 
 
|-
 
|-
 
| SLATB_10      || Y || ,,
 
| SLATB_10      || Y || ,,
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| TSUMEM         || N || Temp. sum from sowing to emerge. [cel d]
 
| TSUMEM         || N || Temp. sum from sowing to emerge. [cel d]
 
|}
 
|}
 +
 +
==WOFOST parameters==
 +
 +
====Variable type====
 +
*C = character
 +
*I = integer
 +
*R = real
 +
 +
====Input from or output to file====
 +
*iOF = input from run option file
 +
*iRF = input from rerun file
 +
*iTD = input from timer file
 +
*iSD = input from site file
 +
*iCF = input from crop data file
 +
*iSF = input from soil data file
 +
*oDR = output to file with detailed results per growing season
 +
*oSY = output to file with results for series of years
 +
 +
{|class="wikitable"
 +
! Parameter code !! Type !! Input/Output !! Description
 +
|-
 +
| AMAXTB || R || iCF || Maximum leaf CO2 assimilation rate as a function of development stage of
 +
|-
 +
| ANT(H) || I || oDR,oSY || Duration of pre-anthesis phase (d).
 +
|-
 +
| AVAIL || R || oDR || Amount of water available in actual root zone (cm water).
 +
|-
 +
| AWC || R || oDR,oSY,oLT || Available water capacity of soil (mm water per m soil depth).
 +
|-
 +
| CFET || R || iCF || Correction factor for evapotranspiration in relation to the reference crop.
 +
|-
 +
| CONTAB || R || iSF || 10-log hydraulic conductivity as a function of pF (log(cmd-1); log(cm)).
 +
|-
 +
| CLFFILE || C || iTD || Filename of weather station.
 +
|-
 +
| CLMNAM || C || iTD || Description of weather station.
 +
|-
 +
| CRAIRC || R || iSF || Critical soil air content for aeration (cm-3cm-3).
 +
|-
 +
| CRFIL || C || iTD || Filename of crop file.
 +
|-
 +
| CRPNAM || C || iCF || Crop name.
 +
|-
 +
| CVL || R || iCF || Conversion efficiency of assimilates into leaf (kgkg-1).
 +
|-
 +
| CVO || R || iCF || Conversion efficiency of assimilates into storage organ (kgkg-1).
 +
|-
 +
| CVR || R || iCF || Conversion efficiency of assimilates into root (kgkg-1).
 +
|-
 +
| CVS || R || iCF || Conversion efficiency of assimilates into stem (kgkg-1).
 +
|-
 +
| DAY || I || oDR || Day number of calendar year.
 +
|-
 +
| DD || R || iSD || Depth of drainage (cm).
 +
|-
 +
| DEFLIM || R || iSF || Required moisture deficit for a deep seedbed (cm) (soil workability parameter).
 +
|-
 +
| DELWAT || R || oSY || Difference between final and initial available water in the root zone of (cm water).
 +
|-
 +
| DEPNR || R || iCF || Crop group number for soil water depletion.
 +
|-
 +
| DLC || R || iCF || Critical day length (photoperiod) (hr).
 +
|-
 +
| DLO || R || iCF || Optimum day length (photoperiod) (hr).
 +
|-
 +
| DMI || R || oDR || Rate of dry matter increase (kgha-1d-1).
 +
|-
 +
| DTSMTB || R || iCF || Daily increase in thermal time as function of average temperature (ºCd-1).
 +
|-
 +
| DUR || I || oSY,oLT || Duration of simulation period (d).
 +
|-
 +
| DVS || R || oDR || Development stage of crop (-).
 +
|-
 +
| DVSEND || R || iCF || Development stage at harvest.
 +
|-
 +
| DVSI || R || iCF || Initial development stage.
 +
|-
 +
| EFFTB || R || iCF || Initial light-use efficiency of CO2 assimilation of single leaves as function of daily temperature ((kgha-1 hr-1)/(Jm-2s-1); ºC).
 +
|-
 +
| EM || I || oSY,oLT || Emergence date, (day of the year).
 +
|-
 +
| EVA || R || oDR || Evaporation rate from soil or from water stored on soil surface (mmd-1).
 +
|-
 +
| EVSOL || R || oSY || Total evaporation from soil surface (cm water).
 +
|-
 +
| FIXNAM || C || iOF || Output filename for summary output of potential and water limited production (max 8 characters, no extension). This is only used when running WOFOST in MSDOS mode; WCC uses its own filename.
 +
|-
 +
| FLTB || R || iCF || Fraction of above ground dry matter increase partitioned to leaves as a function of development stage (kgkg-1;-).
 +
|-
 +
| FLWR || I || oSY || Day of flowering (day in year).
 +
|-
 +
| FOTB || R || iCF || Fraction of above ground dry matter increase partitioned to storage organs as a function of development stage (kgkg-1;-).
 +
|-
 +
| FRTB || R || iCF || Fraction of total dry matter increase partitioned to roots as a function of development stage (kgkg-1;-).
 +
|-
 +
| FSTB || R || iCF || Fraction of above ground dry matter increase partitioned to stems as a function of development stage (kgkg-1;-).
 +
|-
 +
| GASS || R || oDR || Gross assimilation rate (kg (CH2O)ha-1d-1).
 +
|-
 +
| GASST || R || oDR,oSY || Total gross assimilation (kg (CH2O)ha-1).
 +
|-
 +
| HALT || I || oDR,oSY || Day number at harvest (day of the year).
 +
|-
 +
| HINDEX || R || oDR,oSY,oLT || Harvest index: weight of storage organs / weight of total above ground crop.
 +
|-
 +
| IAIRDU || I || iCF || Presence of air ducts in roots (e.g. rice) (present (=1) or not (=0)).
 +
|-
 +
| IBAL || I || iTD || Option for output summary water balance: 0 (no summary), 1 (for whole system), 2 (for root zone), or 3 (for whole system and root zone).
 +
|-
 +
| IDAYEN || I || iTD || Ultimate date of harvest (day of the year).
 +
|-
 +
| IDEM || I || iTD,oDR || Day of emergence (day of the year).
 +
|-
 +
| IDESOW || I || iTD || Earliest date of sowing (day of the year).
 +
|-
 +
| IDLSOW || I || iTD || Ultimate date of sowing (day of the year).
 +
|-
 +
| IDRAIN || I || iSD || Presence -1 or absence 0 of drains.
 +
|-
 +
| IDSEM || I || oDR || Number of days since emergence (d).
 +
|-
 +
| IDSL || I || iCF || Factor on which development rate between development stage 0 and 1 depends (temperature (0), photo period -1 or both (2)).
 +
|-
 +
| IDSOW || I || iTD || Date of sowing (day of the year).
 +
|-
 +
| IDURMX || I || iTD || Maximum number of days from emergence to the end of the simulation.
 +
|-
 +
| IENCHO || I || iTD || Option to determine end of simulation (fixed end date (1), maturity but no to exceed maximum duration (2), earliest of the two dates (3)).
 +
|-
 +
| IFUNRN || I || iSD || Indicates whether non-infiltrating fraction of rain is a function of storm size -1 or not (0).
 +
|-
 +
| INYEAR || I || iTD || Number of years to simulate.
 +
|-
 +
| INYRG || I || iTD || Number of runs with manipulated rain / number of rain years.
 +
|-
 +
| IOPT2 || I || iOF || Start/Stop option: 2 (run WOFOST with default input from data files), 4 (run WOFOST from reruns file without default run) and 5 (run FSEOPT for calibration of WOFOST; only possible in MSDOS mode and not available in WCC).
 +
|-
 +
| IOXWL || I || iOF || Type of water-limited crop growth: 0 (effects of drought only), 1 (effects of both drought and oxygen shortage).
 +
|-
 +
| IPRODL || I || iOF || Production levels: 1 (simulation of potential crop growth), 2 (simulation of water limited crop growth), 3 (calculation of nutrient limited crop growth).
 +
|-
 +
| IRNDAT || I || iTD || Option for the use/selection of rainfall data: 0 (generates statistics with varying total monthly rainfall and number of rainy days), 1 (distributes monthly rainfall over given number of days), 2 (reads rainfall data out of separate file) or 3 (rainfall as it occurs in weather file).
 +
|-
 +
| ISDAY || I || iTD || Start date of water balance (day of the year).
 +
|-
 +
| ISTCHO || I || iTD || Options for the start of simulation (fixed emergence day (0), fixed sowing day -1 or variable sowing day (2)) (day of the year).
 +
|-
 +
| ISYR || I || iTD || First year of simulation (year)
 +
|-
 +
| ISYRR || I || iTD || First year of rainfall data (year)
 +
|-
 +
| IWEATH || I || iTD || Weather format: (WOFOST-monthly (0), WOFOST-climate (1), or CABO (2).
 +
|-
 +
| IZT || I || iSD,oLT || Influence of groundwater: 0 (no) or 1 (yes).
 +
|-
 +
| KBASE || R || iSD || Basic supply of potassium by the unfertilized soil for one growing season of 120 days (kgha-1).
 +
|-
 +
| Kbas || R || oDR || Basic supply of potassium by the unfertilized soil in the actual growing season of the crop (kgha-1).
 +
|-
 +
| KDIFTB || R || iCF || Extinction coefficient for diffuse visible light as function of development stage.
 +
|-
 +
| KMAXSO || R || iCF || Maximum concentration of K in storage organs (kgkg-1).
 +
|-
 +
| KMAXVE || R || iCF || Maximum concentration of K in vegetative organs (kg kg-1).
 +
|-
 +
| KMINSO || R || iCF || Minimum concentration of K in storage organs (kgkg-1).
 +
|-
 +
| KMINVE || R || iCF || Minimum concentration of K in vegetative organs (kg kg-1).
 +
|-
 +
| KREC || R || iSD || Apparent recovery of K fertilizer.
 +
|-
 +
| Krec || R || oDR || Idem.
 +
|-
 +
| KSUB || R || iSF || Maximum percolation rate of water to subsoil (cmd-1).
 +
|-
 +
| K0 || R || iSF || Hydraulic conductivity of saturated soil (cmd-1).
 +
|-
 +
| LAI || R || oDR || Leaf area index: (leaf area)/(soil area) (haha-1).
 +
|-
 +
| LAIEM || R || iCF || Leaf area index at emergence (haha-1).
 +
|-
 +
| LAIM || R || oSY,oLT || Maximum leaf area index (haha-1).
 +
|-
 +
| LOSST || R || oSY || Total water percolated to deep soil, not available for plant growth (cm water).
 +
|-
 +
| MRES || R || oDR || Maintenance respiration rate (kg (CH2O) ha-1d-1).
 +
|-
 +
| MREST || R || oDR,oSY || Total maintenance respiration (kg (CH2O) ha-1).
 +
|-
 +
| NBASE || R || iSD || Basic supply of nitrogen by the unfertilized soil for one growing season of 120 days (kgha-1).
 +
|-
 +
| Nbas || R || oDR || Basic supply of nitrogen by the unfertilized soil in the actual growing season of the crop
 +
|-
 +
| NFIX || R || iCF || Fraction of N uptake that originates from biological fixation (kgkg-1).
 +
|-
 +
| NMAXSO || R || iCF || Maximum concentration of N in storage organs (kgkg-1).
 +
|-
 +
| NMAXVE || R || iCF || Maximum concentration of N in vegetative organs (kg kg-1).
 +
|-
 +
| NMINSO || R || iCF || Minimum concentration of N in storage organs (kgkg-1).
 +
|-
 +
| NMINVE || R || iCF || Minimum concentration of N in vegetative organs (kg kg-1).
 +
|-
 +
| NOTINF || R || iSD,oDR || Maximum fraction of rain not-infiltrating into the soil.
 +
|-
 +
| NREC || R || iSD || Apparent recovery of N fertilizer.
 +
|-
 +
| Nrec || R || oDR || Idem.
 +
|-
 +
| PBASE || R || iSD || Basic supply of phosphorus by the unfertilized soil for one growing season of 120 days (kgha-1).
 +
|-
 +
| Pbas || R || oDR || Basic supply of phosphorus by the unfertilized soil in the actual growing season of the crop (kgha-1).
 +
|-
 +
| PERDL || R || iCF || Maximum relative death rate of leaves due to water stress (-; kgkg-1d-1).
 +
|-
 +
| PMAXSO || R || iCF || Maximum concentration of P in storage organs (kgkg-1).
 +
|-
 +
| PMAXVE || R || iCF || Maximum concentration of P in vegetative organs (kg kg-1).
 +
|-
 +
| PMINSO || R || iCF || Minimum concentration of P in storage organs (kgkg-1).
 +
|-
 +
| PMINVE || R || iCF || Minimum concentration of P in vegetative organs (kg kg-1).
 +
|-
 +
| PRDEL || I || iTD || Number of time steps between output lines (days).
 +
|-
 +
| PREC || R || iSD || Apparent recovery of P fertilizer.
 +
|-
 +
| Prec || R || oDR || Idem.
 +
|-
 +
| PS || C || oLT || Production level (production situation) (PP = potential; WP = water-limited).
 +
|-
 +
| Q10 || R || iCF || Relative change in respiration rate per 10 ºC temperature change.
 +
|-
 +
| RAFILE || C || iTD || Filename of rainfall station.
 +
|-
 +
| RAGP || R || oSY,oLT || Relative total above ground production: (water-limited production) / (potential production).
 +
|-
 +
| RAIN || R || oDR || Total rainfall in the simulation period (mm water).
 +
|-
 +
| RAINAM || C || iTD || Description of rainfall station.
 +
|-
 +
| RAINT || R || oSY || Total rainfall in the simulation period (cm water).
 +
|-
 +
| RD || R || oDR || Depth of actual root zone (cm).
 +
|-
 +
| RDI || R || iCF || Initial rooting depth (cm).
 +
|-
 +
| RDM || R || oDR || Actual rooting depth (cm).
 +
|-
 +
| RDMCR || R || iCF || Maximum rooting depth of mature crop (plant characteristic) (cm).
 +
|-
 +
| RDMSOL || R || iSD,oLT || Maximum rooting depth allowed by soil (cm).
 +
|-
 +
| RDMso || R || oDR || Maximum rooting depth allowed by soil (cm).
 +
|-
 +
| RDRRTB || R || iCF || Relative death rate of roots as a function of development stage (kgkg-1d-1;-).
 +
|-
 +
| RDRSTB || R || iCF || Relative death rate of stems as a function of development stage (kgkg-1d-1;-).
 +
|-
 +
| REPORT || I || iOF || Report: 1 (one line per year and statistics). This is the only valid option also for running WOFOST in MSDOS mode.
 +
|-
 +
| RESRV || R || oDR || Available soil water in potential root zone (in and below actual root zone) (cm water).
 +
|-
 +
| RFSETB || R || iCF || Reduction factor for senescence as function of development stage.
 +
|-
 +
| RGRLAI || R || iCF || Maximum relative increase in LAI (haha-1d-1).
 +
|-
 +
| RML || R || iCF || Relative maintenance respiration rate leaves (kg (CH2O) kg-1d-1).
 +
|-
 +
| RMO || R || iCF || Relative maintenance respiration rate storage organs (kg (CH2O) kg-1d-1).
 +
|-
 +
| RMR || R || iCF || Relative maintenance respiration rate roots (kg (CH2O) kg-1d-1).
 +
|-
 +
| RMS || R || iCF || Relative maintenance respiration rate stems (kg (CH2O) kg-1d-1).
 +
|-
 +
| RQUIRD || I || iOF || Long term means results. This is a summary file of the summary files of potential and water limited production: 0 (no), 1 (yes). In WCC the summary is only shown when there are more than two years (because of calculating statistics) and the rerun option is used.
 +
|-
 +
| RRI || R || iCF || Maximum daily increase in rooting depth (cmd-1).
 +
|-
 +
| RUNNAM || C || iTD,iRF,oDR, oSY,oLT || Characterization of the simulation runs.
 +
|-
 +
| RYLD || R || oSY,oLT || Relative yield: (water-limited yield/potential yield).
 +
|-
 +
| SERIES || I || iOF || Final results for series of years: 0 (no), 1 (yes). This option has only meaning when running WOFOST in MSDOS mode. The WCC gives always output when the run covers more than 1 year.
 +
|-
 +
| SITFIL || C || iOF || Site filename.
 +
|-
 +
| SLATB || R || iCF || Specific leaf area as a function of development stage (hakg-1;-).
 +
|-
 +
| SM || R || oDR || Soil moisture content (cm3cm-3).
 +
|-
 +
| SMFCF || R || iSF,oDR || Soil moisture content at field capacity (cm3cm-3).
 +
|-
 +
| SMLIM || R || iSD,oDR || Initial maximum moisture content in initial rooting depth (-).
 +
|-
 +
| SMTAB || R || iSF || Soil water retention; volumetric moisture content (second column) as function of (log (cm); cm3cm-3).
 +
|-
 +
| SMW || R || iSF,oDR || Soil moisture content at wilting point (cm3cm-3).
 +
|-
 +
| SM0 || R || iSF,oDR || Soil moisture content of saturated soil (cm3cm-3).
 +
|-
 +
| SOFILE || C || iSD || Filename of soil.
 +
|-
 +
| SOLNAM || C || iSF || Soil name.
 +
|-
 +
| SOPE || R || iSF || Maximum percolation rate root zone (cmd-1).
 +
|-
 +
| SOW || I || oSY,oLT || Day of sowing (day of the year).
 +
|-
 +
| SPA || R || iCF || Specific pod area (hakg-1).
 +
|-
 +
| SPADS || R || iSF || 1st topsoil seepage parameter deep seedbed (soil workability parameter).
 +
|-
 +
| SPAN || R || iCF || Life span of leaves growing at 35 ºC (days).
 +
|-
 +
| SPASS || R || iSF || 1st topsoil seepage parameter shallow seedbed (soil workability parameter).
 +
|-
 +
| SPODS || R || iSF || 2nd topsoil seepage parameter deep seedbed (soil workability parameter).
 +
|-
 +
| SPOSS || R || iSF || 2nd topsoil seepage parameter shallow seedbed (soil workability parameter).
 +
|-
 +
| SSATB || R || iCF || Specific stem area as function of development stage (hakg-1;-).
 +
|-
 +
| SSI || R || iSD || Initial surface storage (cm water).
 +
|-
 +
| SSMAX || R || iSD,oDR || Maximum surface storage capacity (cm water)
 +
|-
 +
| TAGP || R || oDR,oSY,oLT || Total above ground production (dead and living plant organs) (kgha-1) (for potato and beet: TAGP= total above ground production + storage organ).
 +
|-
 +
| TBASE || R || iCF || Lower threshold temperature for ageing of leaves (ºC).
 +
|-
 +
| TBASEM || R || iCF || Lower threshold temperature for emergence (ºC).
 +
|-
 +
| TDWI || R || iCF || Initial total crop dry weight (kgha-1).
 +
|-
 +
| TEFFMX || R || iCF || Maximum effective temperature for emergence (ºC).
 +
|-
 +
| TIMFIL || C || iOF || Timer filename.
 +
|-
 +
| TMNFTB || R || iCF || Reduction factor of gross assimilation rate as function of low minimum temperature (-; ºC).
 +
|-
 +
| TMPFTB || R || iCF || Reduction factor of AMAX as function of average temperature (ºC).
 +
|-
 +
| TRA || R || oDR || Transpiration rate (mmd-1).
 +
|-
 +
| TRANSP || R || oDR,oSY || Total transpiration (cm water).
 +
|-
 +
| TRAT || R || oSY || Total transpiration (cm water).
 +
|-
 +
| TRC || R || oDR,oSY,oLT || Transpiration coefficient (kg water per kg dry matter).
 +
|-
 +
| TSR || R || oSY || Total surface runoff during simulation run (cm water).
 +
|-
 +
| TSUM || R || oDR || Thermal time (temperature sum) (ºCd-1).
 +
|-
 +
| TSUMEM || R || iCF || Thermal time from sowing to emergence (ºCd-1).
 +
|-
 +
| TSUM1 || R || iCF || Thermal time from emergence to anthesis (ºCd-1).
 +
|-
 +
| TSUM2 || R || iCF || Thermal time from anthesis to maturity (ºCd-1).
 +
|-
 +
| TWLV || R || oDR,oSY,oLT || Total dry weight of leaves (dead and living) (kgha-1).
 +
|-
 +
| TWRT || R || oDR,oSY || Total dry weight of roots (dead and living) (kgha-1).
 +
|-
 +
| TWSO || R || oDR,oSY,oLT || Total dry weight of storage organs (dead and living) (kgha-1).
 +
|-
 +
| TWST || R || oDR,oSY,oLT || Total dry weight of stems (dead and living) (kgha-1).
 +
|-
 +
| var% || R || oLT || Coefficient of variation.
 +
|-
 +
| WAV || R || iSD,oDR || Initial amount of available water in total rootable soil (moisture content above wilting point) (cm water).
 +
|-
 +
| WLV || R || oDR || Dry weight of living leaves (kgha-1).
 +
|-
 +
| WOFOUT || C || iOF || Filename detailed output.
 +
|-
 +
| WOFRER || C || iOF || Rerun filename.
 +
|-
 +
| WSO || R || oDR || Dry weight of living storage organs (kgha-1).
 +
|-
 +
| WST || R || oDR || Dry weight of living stems (kgha-1).
 +
|-
 +
| YEAR || I || oSY || Year (water limited).
 +
|-
 +
| YR || I || oSY || Year (potential production).
 +
|-
 +
| YZERO || R || iCF || Maximum amount of vegetative organs at zero yield (kgha-1) (to calculate nutrient uptake).
 +
|-
 +
| ZTI || R || iSD || Initial depth of groundwater table (cm).
 +
|-
 +
| wet || I || oDR || total number of days characterized by reduced crop growth due to oxygen shortage (d).
 +
|-
 +
| dry || I || oDR || total number of days characterized by reduced crop growth due to water shortage (d).
 +
|}
 +
 
[[Category:Appendixes]]
 
[[Category:Appendixes]]

Latest revision as of 16:28, 13 July 2012



CGMS parameters

Parameter code Table parameter (Y/N) Description
AMAXTB_01 Y Max. leaf CO2 assim. rate as a function of DVS [-; kg ha-1 hr-1]
AMAXTB_02 Y ,,
AMAXTB_03 Y ,,
AMAXTB_04 Y ,,
AMAXTB_05 Y ,,
AMAXTB_06 Y ,,
AMAXTB_07 Y ,,
AMAXTB_08 Y ,,
AMAXTB_09 Y ,,
AMAXTB_10 Y ,,
CFET N Correction factor transpiration rate [-]
CLAI N Leaf area index after cutting [ha leaf ha ground-1]
COCON N Atmospheric CO2 concentration [ppm]
CRPF N Correction factor realtes crop transpiration to open water evaporation [-]
CVL N Efficiency of conversion into leaves [kg kg-1]
CVO N Efficiency of conversion into storage org. [kg kg-1]
CVR N Efficiency of conversion into roots [kg kg-1]
CVS N Efficiency of conversion into stems [kg kg-1]
CWGHT N Weight of green leaves which initiates mowing event (valid if MOPT = 1) [kg ha-1
DEPNR N Crop group number for soil water depletion [-]
DLC N Critical daylength (lower threshold) [hr]
DLO N Optimum daylength for development [hr]
DTSMTB_01 Y Daily increase in temp. sum as a function of av. temp. [cel; cel d]
DTSMTB_02 Y ,,
DTSMTB_03 Y ,,
DTSMTB_04 Y ,,
DTSMTB_05 Y ,,
DTSMTB_06 Y ,,
DTSMTB_07 Y ,,
DTSMTB_08 Y ,,
DTSMTB_09 Y ,,
DTSMTB_10 Y ,,
DVSEND N Development stage at harvest (=2.0 at maturity) [-]
EFF N Light use effic. single leaf [kg ha-1 hr-1 J-1 m2 s]
FLTB_01 Y fraction of above-gr. dry matter to leaves as a function of DVS [-; kg kg-1]
FLTB_02 Y ,,
FLTB_03 Y ,,
FLTB_04 Y ,,
FLTB_05 Y ,,
FLTB_06 Y ,,
FLTB_07 Y ,,
FLTB_08 Y ,,
FLTB_09 Y ,,
FLTB_10 Y ,,
FLTB_11 Y ,,
FLTB_12 Y ,,
FLTB_13 Y ,,
FLTB_14 Y ,,
FLTB_15 Y ,,
FOTB_01 Y fraction of above-gr. dry matter to stor. org. as a function of DVS [-; kg kg-1]
FOTB_02 Y ,,
FOTB_03 Y ,,
FOTB_04 Y ,,
FOTB_05 Y ,,
FOTB_06 Y ,,
FOTB_07 Y ,,
FOTB_08 Y ,,
FOTB_09 Y ,,
FOTB_10 Y ,,
FOTB_11 Y ,,
FOTB_12 Y ,,
FOTB_13 Y ,,
FOTB_14 Y ,,
FOTB_15 Y ,,
FRROTB_01 Y Fraction of dry matter all.to roots as function of rel.transpiration [-;kg kg-1]
FRROTB_02 Y ,,
FRROTB_03 Y ,,
FRROTB_04 Y ,,
FRROTB_05 Y ,,
FRROTB_06 Y ,,
FRROTB_07 Y ,,
FRROTB_08 Y ,,
FRROTB_09 Y ,,
FRROTB_10 Y ,,
FRTB_01 Y fraction of tot. dry matter to roots as a function of DVS [-; kg kg-1]
FRTB_02 Y ,,
FRTB_03 Y ,,
FRTB_04 Y ,,
FRTB_05 Y ,,
FRTB_06 Y ,,
FRTB_07 Y ,,
FRTB_08 Y ,,
FRTB_09 Y ,,
FRTB_10 Y ,,
FRTB_11 Y ,,
FRTB_12 Y ,,
FSTB_01 Y fraction of above-gr. dry matter to stems as a function of DVS [-; kg kg-1]
FSTB_02 Y ,,
FSTB_03 Y ,,
FSTB_04 Y ,,
FSTB_05 Y ,,
FSTB_06 Y ,,
FSTB_07 Y ,,
FSTB_08 Y ,,
FSTB_09 Y ,,
FSTB_10 Y ,,
FSTB_11 Y ,,
FSTB_12 Y ,,
FSTB_13 Y ,,
FSTB_14 Y ,,
FSTB_15 Y ,,
IAIRDU N Air ducts in roots present (=1) or not (=0)
IDSL N Indicates whether pre-anthesis development dep. on temp.(0), dayl.(1), or both(2
ILAI N Initial leaf area index at start of grop growth [ha leaf ha ground -1]
IMNDATTB_01 Y Data of periodical harvest [d]
IMNDATTB_02 Y ,,
IMNDATTB_03 Y ,,
IMNDATTB_04 Y ,,
IMNDATTB_05 Y ,,
IMNDATTB_06 Y ,,
IMNDATTB_07 Y ,,
IMNDATTB_08 Y ,,
IMNDATTB_09 Y ,,
IMNDATTB_10 Y ,,
IMNDATTB_11 Y ,,
IMNDATTB_12 Y ,,
IMNDATTB_13 Y ,,
IMNDATTB_14 Y ,,
IMNDATTB_15 Y ,,
IMOPT N Variable to choose grassland management [-]
INTIL N Initial number of tillers [1; m-2]
ISTO N Initial dry weight of reserves [kg ha-1]
KDIF N Extinction coefficient for diffuse visible light [-]
LAICR N Leaf area index at which death due to shading starts [ha leaf ha groud-1]
LAIEM N Leaf area index at emergence [ha ha-1]
LEAFNM N Maximum leaf appearance rate [leaf tiller-1 d-1]
LUEMAX N Maximum light use efficiency [g MJ PAR-1]
LUERED2TB_01 Y Reduction factor on light use efficiency based on radiation intensity [MJ rad;-]
LUERED2TB_02 Y ,,
LUERED2TB_03 Y ,,
LUERED2TB_04 Y ,,
LUERED2TB_05 Y ,,
LUERED2TB_06 Y ,,
LUERED2TB_07 Y ,,
LUERED2TB_08 Y ,,
LUERED2TB_09 Y ,,
LUERED2TB_10 Y ,,
NITMAX N Optimal organic nitrogen content [kg N kg dm-1]
NITR N Actual organic nitrogen content [kg N kg dm-1]
PERDL N Max. rel. death rate of leaves due to water stress
Q10 N Rel. incr. in resp. rate 10 Cel temp. incr. [-]
RDI N Initial rooting depth [cm]
RDMCR N Maximum rooting depth [cm]
RDRRTB_01 Y Relative death rate of stems as a function of DVS [-; kg kg-1 d-1]
RDRRTB_02 Y ,,
RDRRTB_03 Y ,,
RDRRTB_04 Y ,,
RDRRTB_05 Y ,,
RDRRTB_06 Y ,,
RDRRTB_07 Y ,,
RDRRTB_08 Y ,,
RDRRTB_09 Y ,,
RDRRTB_10 Y ,,
RDRSTB_01 Y Relative death rate of roots as a function of DVS [-; kg kg-1 d-1]
RDRSTB_02 Y ,,
RDRSTB_03 Y ,,
RDRSTB_04 Y ,,
RDRSTB_05 Y ,,
RDRSTB_06 Y ,,
RDRSTB_07 Y ,,
RDRSTB_08 Y ,,
RDRSTB_09 Y ,,
RDRSTB_10 Y ,,
RFSETB_01 Y Reduction factor for senescencs as a function of DVS [-; -]
RFSETB_02 Y ,,
RFSETB_03 Y ,,
RFSETB_04 Y ,,
RFSETB_05 Y ,,
RFSETB_06 Y ,,
RFSETB_07 Y ,,
RFSETB_08 Y ,,
RFSETB_09 Y ,,
RFSETB_10 Y ,,
RGRLAI N Maximum relative increase in LAI [ha ha-1 d-1]
RML N Rel. maint. resp. rate leaves [kg CH2O kg-1 d-1]
RMO N Rel. maint. resp. rate stor. org. [kg CH2O kg-1 d-1]
RMR N Rel. maint. resp. rate roots [kg CH2O kg-1 d-1]
RMS N Rel. maint. resp. rate stems [kg CH2O kg-1 d-1]
RRI N Maximum daily increase in rooting depth [cm d-1]
SLA N Specific leaf area
SLATB_01 Y Specific leaf area as a function of DVS [-; ha ha-1]
SLATB_02 Y ,,
SLATB_03 Y ,,
SLATB_04 Y ,,
SLATB_05 Y ,,
SLATB_06 Y ,,
SLATB_07 Y ,,
SLATB_08 Y ,,
SLATB_09 Y ,,
SLATB_10 Y ,,
SPA N Specific pod area [ha kg-1]
SPAN N Life span of leaves growing at 35 Celsius [d]
SSA N Specific stem area [ha kg-1]
STARTDAY_ISTART N indicates when to start rule to determine intermediate stop
STARTDAY_ISTOP N indicates when to start rule to determine intermediate start
TBASE N Lower threshold temp. for ageing of leaves [cel]
TBASEM N Lower threshold temp. for emergence [cel]
TDWI N Initial total crop dry weight [kg ha-1]
TEFFMX N Max. effective temp for emergence [cel]
TEMP_WINTERKILL N threshold temperature winterkill
TMBASE1 N Temperature for start of crop growth [cel]
TMBASE2 N Temperature that defines start of source-limited crop growth [cel]
TMNFTB_01 Y Reduction factor of gross assim. rate as a function of low min. temp. [cel; -]
TMNFTB_02 Y ,,
TMNFTB_03 Y ,,
TMNFTB_04 Y ,,
TMNFTB_05 Y ,,
TMNFTB_06 Y ,,
TMNFTB_07 Y ,,
TMNFTB_08 Y ,,
TMNFTB_09 Y ,,
TMNFTB_10 Y ,,
TMPFTB_01 Y Reduction factor for AMAX as a function of av. temp. [cel; -]
TMPFTB_02 Y ,,
TMPFTB_03 Y ,,
TMPFTB_04 Y ,,
TMPFTB_05 Y ,,
TMPFTB_06 Y ,,
TMPFTB_07 Y ,,
TMPFTB_08 Y ,,
TMPFTB_09 Y ,,
TMPFTB_10 Y ,,
TSUM1 N Temp. sum from emergence to anthesis [cel d]
TSUM2 N Temp. sum from anthesis to maturity [cel d]
TSUMEM N Temp. sum from sowing to emerge. [cel d]

WOFOST parameters

Variable type

  • C = character
  • I = integer
  • R = real

Input from or output to file

  • iOF = input from run option file
  • iRF = input from rerun file
  • iTD = input from timer file
  • iSD = input from site file
  • iCF = input from crop data file
  • iSF = input from soil data file
  • oDR = output to file with detailed results per growing season
  • oSY = output to file with results for series of years
Parameter code Type Input/Output Description
AMAXTB R iCF Maximum leaf CO2 assimilation rate as a function of development stage of
ANT(H) I oDR,oSY Duration of pre-anthesis phase (d).
AVAIL R oDR Amount of water available in actual root zone (cm water).
AWC R oDR,oSY,oLT Available water capacity of soil (mm water per m soil depth).
CFET R iCF Correction factor for evapotranspiration in relation to the reference crop.
CONTAB R iSF 10-log hydraulic conductivity as a function of pF (log(cmd-1); log(cm)).
CLFFILE C iTD Filename of weather station.
CLMNAM C iTD Description of weather station.
CRAIRC R iSF Critical soil air content for aeration (cm-3cm-3).
CRFIL C iTD Filename of crop file.
CRPNAM C iCF Crop name.
CVL R iCF Conversion efficiency of assimilates into leaf (kgkg-1).
CVO R iCF Conversion efficiency of assimilates into storage organ (kgkg-1).
CVR R iCF Conversion efficiency of assimilates into root (kgkg-1).
CVS R iCF Conversion efficiency of assimilates into stem (kgkg-1).
DAY I oDR Day number of calendar year.
DD R iSD Depth of drainage (cm).
DEFLIM R iSF Required moisture deficit for a deep seedbed (cm) (soil workability parameter).
DELWAT R oSY Difference between final and initial available water in the root zone of (cm water).
DEPNR R iCF Crop group number for soil water depletion.
DLC R iCF Critical day length (photoperiod) (hr).
DLO R iCF Optimum day length (photoperiod) (hr).
DMI R oDR Rate of dry matter increase (kgha-1d-1).
DTSMTB R iCF Daily increase in thermal time as function of average temperature (ºCd-1).
DUR I oSY,oLT Duration of simulation period (d).
DVS R oDR Development stage of crop (-).
DVSEND R iCF Development stage at harvest.
DVSI R iCF Initial development stage.
EFFTB R iCF Initial light-use efficiency of CO2 assimilation of single leaves as function of daily temperature ((kgha-1 hr-1)/(Jm-2s-1); ºC).
EM I oSY,oLT Emergence date, (day of the year).
EVA R oDR Evaporation rate from soil or from water stored on soil surface (mmd-1).
EVSOL R oSY Total evaporation from soil surface (cm water).
FIXNAM C iOF Output filename for summary output of potential and water limited production (max 8 characters, no extension). This is only used when running WOFOST in MSDOS mode; WCC uses its own filename.
FLTB R iCF Fraction of above ground dry matter increase partitioned to leaves as a function of development stage (kgkg-1;-).
FLWR I oSY Day of flowering (day in year).
FOTB R iCF Fraction of above ground dry matter increase partitioned to storage organs as a function of development stage (kgkg-1;-).
FRTB R iCF Fraction of total dry matter increase partitioned to roots as a function of development stage (kgkg-1;-).
FSTB R iCF Fraction of above ground dry matter increase partitioned to stems as a function of development stage (kgkg-1;-).
GASS R oDR Gross assimilation rate (kg (CH2O)ha-1d-1).
GASST R oDR,oSY Total gross assimilation (kg (CH2O)ha-1).
HALT I oDR,oSY Day number at harvest (day of the year).
HINDEX R oDR,oSY,oLT Harvest index: weight of storage organs / weight of total above ground crop.
IAIRDU I iCF Presence of air ducts in roots (e.g. rice) (present (=1) or not (=0)).
IBAL I iTD Option for output summary water balance: 0 (no summary), 1 (for whole system), 2 (for root zone), or 3 (for whole system and root zone).
IDAYEN I iTD Ultimate date of harvest (day of the year).
IDEM I iTD,oDR Day of emergence (day of the year).
IDESOW I iTD Earliest date of sowing (day of the year).
IDLSOW I iTD Ultimate date of sowing (day of the year).
IDRAIN I iSD Presence -1 or absence 0 of drains.
IDSEM I oDR Number of days since emergence (d).
IDSL I iCF Factor on which development rate between development stage 0 and 1 depends (temperature (0), photo period -1 or both (2)).
IDSOW I iTD Date of sowing (day of the year).
IDURMX I iTD Maximum number of days from emergence to the end of the simulation.
IENCHO I iTD Option to determine end of simulation (fixed end date (1), maturity but no to exceed maximum duration (2), earliest of the two dates (3)).
IFUNRN I iSD Indicates whether non-infiltrating fraction of rain is a function of storm size -1 or not (0).
INYEAR I iTD Number of years to simulate.
INYRG I iTD Number of runs with manipulated rain / number of rain years.
IOPT2 I iOF Start/Stop option: 2 (run WOFOST with default input from data files), 4 (run WOFOST from reruns file without default run) and 5 (run FSEOPT for calibration of WOFOST; only possible in MSDOS mode and not available in WCC).
IOXWL I iOF Type of water-limited crop growth: 0 (effects of drought only), 1 (effects of both drought and oxygen shortage).
IPRODL I iOF Production levels: 1 (simulation of potential crop growth), 2 (simulation of water limited crop growth), 3 (calculation of nutrient limited crop growth).
IRNDAT I iTD Option for the use/selection of rainfall data: 0 (generates statistics with varying total monthly rainfall and number of rainy days), 1 (distributes monthly rainfall over given number of days), 2 (reads rainfall data out of separate file) or 3 (rainfall as it occurs in weather file).
ISDAY I iTD Start date of water balance (day of the year).
ISTCHO I iTD Options for the start of simulation (fixed emergence day (0), fixed sowing day -1 or variable sowing day (2)) (day of the year).
ISYR I iTD First year of simulation (year)
ISYRR I iTD First year of rainfall data (year)
IWEATH I iTD Weather format: (WOFOST-monthly (0), WOFOST-climate (1), or CABO (2).
IZT I iSD,oLT Influence of groundwater: 0 (no) or 1 (yes).
KBASE R iSD Basic supply of potassium by the unfertilized soil for one growing season of 120 days (kgha-1).
Kbas R oDR Basic supply of potassium by the unfertilized soil in the actual growing season of the crop (kgha-1).
KDIFTB R iCF Extinction coefficient for diffuse visible light as function of development stage.
KMAXSO R iCF Maximum concentration of K in storage organs (kgkg-1).
KMAXVE R iCF Maximum concentration of K in vegetative organs (kg kg-1).
KMINSO R iCF Minimum concentration of K in storage organs (kgkg-1).
KMINVE R iCF Minimum concentration of K in vegetative organs (kg kg-1).
KREC R iSD Apparent recovery of K fertilizer.
Krec R oDR Idem.
KSUB R iSF Maximum percolation rate of water to subsoil (cmd-1).
K0 R iSF Hydraulic conductivity of saturated soil (cmd-1).
LAI R oDR Leaf area index: (leaf area)/(soil area) (haha-1).
LAIEM R iCF Leaf area index at emergence (haha-1).
LAIM R oSY,oLT Maximum leaf area index (haha-1).
LOSST R oSY Total water percolated to deep soil, not available for plant growth (cm water).
MRES R oDR Maintenance respiration rate (kg (CH2O) ha-1d-1).
MREST R oDR,oSY Total maintenance respiration (kg (CH2O) ha-1).
NBASE R iSD Basic supply of nitrogen by the unfertilized soil for one growing season of 120 days (kgha-1).
Nbas R oDR Basic supply of nitrogen by the unfertilized soil in the actual growing season of the crop
NFIX R iCF Fraction of N uptake that originates from biological fixation (kgkg-1).
NMAXSO R iCF Maximum concentration of N in storage organs (kgkg-1).
NMAXVE R iCF Maximum concentration of N in vegetative organs (kg kg-1).
NMINSO R iCF Minimum concentration of N in storage organs (kgkg-1).
NMINVE R iCF Minimum concentration of N in vegetative organs (kg kg-1).
NOTINF R iSD,oDR Maximum fraction of rain not-infiltrating into the soil.
NREC R iSD Apparent recovery of N fertilizer.
Nrec R oDR Idem.
PBASE R iSD Basic supply of phosphorus by the unfertilized soil for one growing season of 120 days (kgha-1).
Pbas R oDR Basic supply of phosphorus by the unfertilized soil in the actual growing season of the crop (kgha-1).
PERDL R iCF Maximum relative death rate of leaves due to water stress (-; kgkg-1d-1).
PMAXSO R iCF Maximum concentration of P in storage organs (kgkg-1).
PMAXVE R iCF Maximum concentration of P in vegetative organs (kg kg-1).
PMINSO R iCF Minimum concentration of P in storage organs (kgkg-1).
PMINVE R iCF Minimum concentration of P in vegetative organs (kg kg-1).
PRDEL I iTD Number of time steps between output lines (days).
PREC R iSD Apparent recovery of P fertilizer.
Prec R oDR Idem.
PS C oLT Production level (production situation) (PP = potential; WP = water-limited).
Q10 R iCF Relative change in respiration rate per 10 ºC temperature change.
RAFILE C iTD Filename of rainfall station.
RAGP R oSY,oLT Relative total above ground production: (water-limited production) / (potential production).
RAIN R oDR Total rainfall in the simulation period (mm water).
RAINAM C iTD Description of rainfall station.
RAINT R oSY Total rainfall in the simulation period (cm water).
RD R oDR Depth of actual root zone (cm).
RDI R iCF Initial rooting depth (cm).
RDM R oDR Actual rooting depth (cm).
RDMCR R iCF Maximum rooting depth of mature crop (plant characteristic) (cm).
RDMSOL R iSD,oLT Maximum rooting depth allowed by soil (cm).
RDMso R oDR Maximum rooting depth allowed by soil (cm).
RDRRTB R iCF Relative death rate of roots as a function of development stage (kgkg-1d-1;-).
RDRSTB R iCF Relative death rate of stems as a function of development stage (kgkg-1d-1;-).
REPORT I iOF Report: 1 (one line per year and statistics). This is the only valid option also for running WOFOST in MSDOS mode.
RESRV R oDR Available soil water in potential root zone (in and below actual root zone) (cm water).
RFSETB R iCF Reduction factor for senescence as function of development stage.
RGRLAI R iCF Maximum relative increase in LAI (haha-1d-1).
RML R iCF Relative maintenance respiration rate leaves (kg (CH2O) kg-1d-1).
RMO R iCF Relative maintenance respiration rate storage organs (kg (CH2O) kg-1d-1).
RMR R iCF Relative maintenance respiration rate roots (kg (CH2O) kg-1d-1).
RMS R iCF Relative maintenance respiration rate stems (kg (CH2O) kg-1d-1).
RQUIRD I iOF Long term means results. This is a summary file of the summary files of potential and water limited production: 0 (no), 1 (yes). In WCC the summary is only shown when there are more than two years (because of calculating statistics) and the rerun option is used.
RRI R iCF Maximum daily increase in rooting depth (cmd-1).
RUNNAM C iTD,iRF,oDR, oSY,oLT Characterization of the simulation runs.
RYLD R oSY,oLT Relative yield: (water-limited yield/potential yield).
SERIES I iOF Final results for series of years: 0 (no), 1 (yes). This option has only meaning when running WOFOST in MSDOS mode. The WCC gives always output when the run covers more than 1 year.
SITFIL C iOF Site filename.
SLATB R iCF Specific leaf area as a function of development stage (hakg-1;-).
SM R oDR Soil moisture content (cm3cm-3).
SMFCF R iSF,oDR Soil moisture content at field capacity (cm3cm-3).
SMLIM R iSD,oDR Initial maximum moisture content in initial rooting depth (-).
SMTAB R iSF Soil water retention; volumetric moisture content (second column) as function of (log (cm); cm3cm-3).
SMW R iSF,oDR Soil moisture content at wilting point (cm3cm-3).
SM0 R iSF,oDR Soil moisture content of saturated soil (cm3cm-3).
SOFILE C iSD Filename of soil.
SOLNAM C iSF Soil name.
SOPE R iSF Maximum percolation rate root zone (cmd-1).
SOW I oSY,oLT Day of sowing (day of the year).
SPA R iCF Specific pod area (hakg-1).
SPADS R iSF 1st topsoil seepage parameter deep seedbed (soil workability parameter).
SPAN R iCF Life span of leaves growing at 35 ºC (days).
SPASS R iSF 1st topsoil seepage parameter shallow seedbed (soil workability parameter).
SPODS R iSF 2nd topsoil seepage parameter deep seedbed (soil workability parameter).
SPOSS R iSF 2nd topsoil seepage parameter shallow seedbed (soil workability parameter).
SSATB R iCF Specific stem area as function of development stage (hakg-1;-).
SSI R iSD Initial surface storage (cm water).
SSMAX R iSD,oDR Maximum surface storage capacity (cm water)
TAGP R oDR,oSY,oLT Total above ground production (dead and living plant organs) (kgha-1) (for potato and beet: TAGP= total above ground production + storage organ).
TBASE R iCF Lower threshold temperature for ageing of leaves (ºC).
TBASEM R iCF Lower threshold temperature for emergence (ºC).
TDWI R iCF Initial total crop dry weight (kgha-1).
TEFFMX R iCF Maximum effective temperature for emergence (ºC).
TIMFIL C iOF Timer filename.
TMNFTB R iCF Reduction factor of gross assimilation rate as function of low minimum temperature (-; ºC).
TMPFTB R iCF Reduction factor of AMAX as function of average temperature (ºC).
TRA R oDR Transpiration rate (mmd-1).
TRANSP R oDR,oSY Total transpiration (cm water).
TRAT R oSY Total transpiration (cm water).
TRC R oDR,oSY,oLT Transpiration coefficient (kg water per kg dry matter).
TSR R oSY Total surface runoff during simulation run (cm water).
TSUM R oDR Thermal time (temperature sum) (ºCd-1).
TSUMEM R iCF Thermal time from sowing to emergence (ºCd-1).
TSUM1 R iCF Thermal time from emergence to anthesis (ºCd-1).
TSUM2 R iCF Thermal time from anthesis to maturity (ºCd-1).
TWLV R oDR,oSY,oLT Total dry weight of leaves (dead and living) (kgha-1).
TWRT R oDR,oSY Total dry weight of roots (dead and living) (kgha-1).
TWSO R oDR,oSY,oLT Total dry weight of storage organs (dead and living) (kgha-1).
TWST R oDR,oSY,oLT Total dry weight of stems (dead and living) (kgha-1).
var% R oLT Coefficient of variation.
WAV R iSD,oDR Initial amount of available water in total rootable soil (moisture content above wilting point) (cm water).
WLV R oDR Dry weight of living leaves (kgha-1).
WOFOUT C iOF Filename detailed output.
WOFRER C iOF Rerun filename.
WSO R oDR Dry weight of living storage organs (kgha-1).
WST R oDR Dry weight of living stems (kgha-1).
YEAR I oSY Year (water limited).
YR I oSY Year (potential production).
YZERO R iCF Maximum amount of vegetative organs at zero yield (kgha-1) (to calculate nutrient uptake).
ZTI R iSD Initial depth of groundwater table (cm).
wet I oDR total number of days characterized by reduced crop growth due to oxygen shortage (d).
dry I oDR total number of days characterized by reduced crop growth due to water shortage (d).
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