PCSE Output¶
The PCSE environment has a multitude of states and rates we group these by module. The majority of them can be found in PCSE Outputs. However, some states and rates have been added to support perennial crop growth. See the reference tables below.
WOFOST States and Rate¶
Name |
Description |
Unit |
|---|---|---|
TAGP |
Total above-ground Production |
kg ha-1 |
GASST |
Total gross assimilation |
kg CH2O ha-1 |
MREST |
Total gross maintenance respiration |
kg CH2O ha-1 |
CTRAT |
Total crop transpiration accumulated over the crop cycle |
cm |
CEVST |
Total soil evaporation accumulated over the crop cycle |
cm |
HI |
Harvest Index (only calculated during finalize()) |
|
DOF |
Date representing the day of finish of the crop simulation |
|
FINISH_TYPE |
String representing the reason for finishing the simulation: maturity, harvest, leave death, etc. |
|
GASS |
Assimilation rate corrected for water stress |
kg CH2O ha-1 d-1 |
PGASS |
Potential assimilation rate |
kg CH2O ha-1 d-1 |
MRES |
Actual maintenance respiration rate, taking into account that MRES <= GASS. |
kg CH2O ha-1 d-1 |
PMRES |
Potential maintenance respiration rate |
kg CH2O ha-1 d-1 |
ASRC |
Net available assimilates (GASS - MRES) |
kg CH2O ha-1 d-1 |
DMI |
Total dry matter increase, calculated as ASRC times a weighted conversion efficiency. |
kg ha-1 d-1 |
ADMI |
Aboveground dry matter increase |
kg ha-1 d-1 |
Evaporation States and Rates¶
Name |
Description |
Unit |
|---|---|---|
IDWST |
Nr of days with water stress. |
|
IDOST |
Nr of days with oxygen stress. |
|
EVWMX |
Maximum evaporation rate from an open water surface. |
cm day-1 |
EVSMX |
Maximum evaporation rate from a wet soil surface. |
cm day-1 |
TRAMX |
Maximum transpiration rate from the plant canopy. |
cm day-1 |
TRA |
Actual transpiration rate from the plant canopy. |
cm day-1 |
IDOS |
Indicates water stress on this day (True|False). |
|
IDWS |
Indicates oxygen stress on this day (True|False). |
|
RFWS |
Reduction factor for water stress. |
|
RFOS |
Reduction factor for oxygen stress. |
|
RFTRA |
Reduction factor for transpiration (water & oxygen). |
Leaf Dynamics States and Rates¶
Name |
Description |
Unit |
|---|---|---|
LV |
Leaf biomass per leaf class |
kg ha-1 |
SLA |
Specific leaf area per leaf class |
ha kg-1 |
LVAGE |
Leaf age per leaf class |
d |
LVSUM |
Sum of LV |
kg ha-1 |
LAIEM |
LAI at emergence |
|
LASUM |
Total leaf area as sum of LV*SLA, not including stem and pod area |
|
LAIEXP |
LAI value under theoretical exponential growth |
|
LAIMAX |
Maximum LAI reached during growth cycle |
|
LAI |
Leaf area index, including stem and pod area |
|
WLV |
Dry weight of living leaves |
kg ha-1 |
DWLV |
Dry weight of dead leaves |
kg ha-1 |
TWLV |
Dry weight of total leaves (living + dead) |
kg ha-1 |
GRLV |
Growth rate leaves |
kg ha-1 d-1 |
DSLV1 |
Death rate leaves due to water stress |
kg ha-1 d-1 |
DSLV2 |
Death rate leaves due to self-shading |
kg ha-1 d-1 |
DSLV3 |
Death rate leaves due to frost kill |
kg ha-1 d-1 |
DSLV4 |
Death rate leaves due to nutrient stress |
kg ha-1 d-1 |
DSLV |
Maximum of DSLV1, DSLV2, DSLV3 |
kg ha-1 d-1 |
DALV |
Death rate leaves due to aging |
kg ha-1 d-1 |
DRLV |
Death rate leaves as a combination of DSLV and DALV |
kg ha-1 d-1 |
SLAT |
Specific leaf area for current time step, adjusted for source/sink limited leaf expansion rate |
ha kg-1 |
FYSAGE |
Increase in physiological leaf age |
|
GLAIEX |
Sink-limited leaf expansion rate (exponential curve) |
ha ha-1 d-1 |
GLASOL |
Source-limited leaf expansion rate (biomass increase) |
ha ha-1 d-1 |
NPK Dynamics States and Rates¶
Name |
Description |
Unit |
|---|---|---|
NamountLV |
Actual N amount in living leaves |
kg N ha-1 |
PamountLV |
Actual P amount in living leaves |
kg P ha-1 |
KamountLV |
Actual K amount in living leaves |
kg K ha-1 |
NamountST |
Actual N amount in living stems |
kg N ha-1 |
PamountST |
Actual P amount in living stems |
kg P ha-1 |
KamountST |
Actual K amount in living stems |
kg K ha-1 |
NamountSO |
Actual N amount in living storage organs |
kg N ha-1 |
PamountSO |
Actual P amount in living storage organs |
kg P ha-1 |
KamountSO |
Actual K amount in living storage organs |
kg K ha-1 |
NamountRT |
Actual N amount in living roots |
kg N ha-1 |
PamountRT |
Actual P amount in living roots |
kg P ha-1 |
KamountRT |
Actual K amount in living roots |
kg K ha-1 |
Nuptake_T |
Total absorbed N amount |
kg N ha-1 |
Puptake_T |
Total absorbed P amount |
kg P ha-1 |
Kuptake_T |
Total absorbed K amount |
kg K ha-1 |
Nfix_T |
Total biological fixated N amount |
kg N ha-1 |
RNamountLV |
Weight increase (N) in leaves |
kg N ha-1 d-1 |
RPamountLV |
Weight increase (P) in leaves |
kg P ha-1 d-1 |
RKamountLV |
Weight increase (K) in leaves |
kg K ha-1 d-1 |
RNamountST |
Weight increase (N) in stems |
kg N ha-1 d-1 |
RPamountST |
Weight increase (P) in stems |
kg P ha-1 d-1 |
RKamountST |
Weight increase (K) in stems |
kg K ha-1 d-1 |
RNamountRT |
Weight increase (N) in roots |
kg N ha-1 d-1 |
RPamountRT |
Weight increase (P) in roots |
kg P ha-1 d-1 |
RKamountRT |
Weight increase (K) in roots |
kg K ha-1 d-1 |
RNamountSO |
Weight increase (N) in storage organs |
kg N ha-1 d-1 |
RPamountSO |
Weight increase (P) in storage organs |
kg P ha-1 d-1 |
RKamountSO |
Weight increase (K) in storage organs |
kg K ha-1 d-1 |
RNdeathLV |
Rate of N loss in leaves |
kg N ha-1 d-1 |
RPdeathLV |
Rate of P loss in leaves |
kg P ha-1 d-1 |
RKdeathLV |
Rate of K loss in leaves |
kg K ha-1 d-1 |
RNdeathST |
Rate of N loss in roots |
kg N ha-1 d-1 |
RPdeathST |
Rate of P loss in roots |
kg P ha-1 d-1 |
RKdeathST |
Rate of K loss in roots |
kg K ha-1 d-1 |
RNdeathRT |
Rate of N loss in stems |
kg N ha-1 d-1 |
RPdeathRT |
Rate of P loss in stems |
kg P ha-1 d-1 |
RKdeathRT |
Rate of K loss in stems |
kg K ha-1 d-1 |
RNloss |
N loss due to senescence |
kg N ha-1 d-1 |
RPloss |
P loss due to senescence |
kg P ha-1 d-1 |
RKloss |
K loss due to senescence |
kg K ha-1 d-1 |
Partitioning States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
FR |
Fraction partitioned to roots. |
Y |
|
FS |
Fraction partitioned to stems. |
Y |
|
FL |
Fraction partitioned to leaves. |
Y |
|
FO |
Fraction partitioned to storage organs. |
Y |
Vernalization States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
VERN |
Vernalisation state |
N |
days |
DOV |
Day when vernalisation requirements are fulfilled. |
N |
|
ISVERNALISED |
Flag indicating that vernalisation requirement has been reached. |
Y |
|
VERNR |
Rate of vernalisation |
N |
|
VERNFAC |
Reduction factor on development rate due to vernalisation effect. |
Y |
Phenology States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
DVS |
Development stage |
Y |
|
TSUM |
Temperature sum |
N |
C day |
TSUME |
Temperature sum for emergence |
N |
C day |
DOS |
Day of sowing |
N |
|
DOE |
Day of emergence |
N |
|
DOA |
Day of Anthesis |
N |
|
DOM |
Day of maturity |
N |
|
DOH |
Day of harvest |
N |
|
STAGE |
Current phenological stage, can take the following values emerging | vegetative | reproductive | mature |
N |
|
DSNG |
Days since no crop growth (perennial only) |
Y |
day |
DSD |
Days since dormancy started (perennial only) |
Y |
day |
AGE |
Age of the crop in years (perennial only) |
Y |
year |
DOP |
Day of Planting |
Y |
|
DATBE |
Number of consecutive days above temperature sum for emergence |
Y |
day |
DTSUME |
Increase in temperature sum for emergence |
N |
C |
DTSUM |
Increase in temperature sum for anthesis or maturity |
N |
C |
DVR |
Development rate |
Y |
day-1 |
RDEM |
Day increase when day temp is above TSUMEM |
Y |
day |
Respiration Dynamics States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
PMRES |
Potential maintenance respiration rate |
N |
kg CH2O ha-1 d-1 |
Root Dynamics States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
RD |
Current rooting depth |
Y |
cm |
RDM |
Maximum attainable rooting depth at the minimum of the soil and crop maximum rooting depth |
N |
cm |
WRT |
Weight of living roots |
Y |
kg ha-1 |
DWRT |
Weight of dead roots |
N |
kg ha-1 |
TWRT |
Total weight of roots |
Y |
kg ha-1 |
RR |
Growth rate root depth |
N |
cm |
GRRT |
Growth rate root biomass |
N |
kg ha-1 d-1 |
DRRT1 |
Death rate of roots due to aging |
N |
kg ha-1 d-1 |
DRRT2 |
Death rate of roots due to excess water |
N |
kg ha-1 d-1 |
DRRT3 |
Death rate of roots due to excess NPK |
N |
kg ha-1 d-1 |
DRRT |
Death rate root biomass |
N |
kg ha-1 d-1 |
GWRT |
Net change in root biomass |
N |
kg ha-1 d-1 |
Stem Dynamics States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
SAI |
Stem Area Index |
Y |
|
WST |
Weight of living stems |
Y |
kg ha-1 |
DWST |
Weight of dead stems |
N |
kg ha-1 |
TWST |
Total weight of stems |
Y |
kg ha-1 |
GRST |
Growth rate stem biomass |
N |
kg ha-1 d-1 |
DRST |
Death rate stem biomass |
N |
kg ha-1 d-1 |
GWST |
Net change in stem biomass |
N |
kg ha-1 d-1 |
Storage Organs Dynamics States and Rates¶
Name |
Description |
Pbl |
Unit |
|---|---|---|---|
PAI |
Pod Area Index |
Y |
|
WSO |
Weight of living storage organs |
Y |
kg ha-1 |
DWSO |
Weight of dead storage organs |
N |
kg ha-1 |
TWSO |
Total weight of storage organs |
Y |
kg ha-1 |
HWSO |
Harvestable weight of storage organs |
Y |
kg ha-1 |
LHW |
Last harvest weight of storage organs |
Y |
kg ha-1 |
GRSO |
Growth rate storage organs |
N |
kg ha-1 d-1 |
DRSO |
Death rate storage organs |
N |
kg ha-1 d-1 |
DHSO |
Death rate of harvestable storage organs |
N |
kg ha-1 d-1 |
GWSO |
Net change in storage organ biomass |
N |
kg ha-1 d-1 |
NPK Demand Uptake States and Rates¶
+==============+=====================================================+=====+============================+ | Name | Description | Pbl | Unit | +==============+=====================================================+=====+============================+ | NuptakeTotal | Total N uptake by the crop | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | PuptakeTotal | Total P uptake by the crop | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | KuptakeTotal | Total K uptake by the crop | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NfixTotal | Total N fixated by the crop | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandST | N Demand in living stems | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandRT | N Demand in living roots | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandSO | N Demand in storage organs | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandLV | P Demand in living leaves | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandST | P Demand in living stems | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandRT | P Demand in living roots | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandSO | P Demand in storage organs | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandLV | K Demand in living leaves | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandST | K Demand in living stems | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandRT | K Demand in living roots | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandSO | K Demand in storage organs | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | RNuptakeLV | Rate of N uptake in leaves | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RNuptakeST | Rate of N uptake in stems | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RNuptakeRT | Rate of N uptake in roots | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RNuptakeSO | Rate of N uptake in storage organs | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RPuptakeLV | Rate of P uptake in leaves | Y | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RPuptakeST | Rate of P uptake in stems | Y | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RPuptakeRT | Rate of P uptake in roots | Y | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RPuptakeSO | Rate of P uptake in storage organs | Y | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RKuptakeLV | Rate of K uptake in leaves | Y | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RKuptakeST | Rate of K uptake in stems | Y | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RKuptakeRT | Rate of K uptake in roots | Y | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RKuptakeSO | Rate of K uptake in storage organs | Y | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RNuptake | Total rate of N uptake | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RPuptake | Total rate of P uptake | Y | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RKuptake | Total rate of K uptake | Y | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | RNfixation | Rate of N fixation | Y | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | NdemandLV | N Demand in living leaves | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandST | N Demand in living stems | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandRT | N Demand in living roots | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | NdemandSO | N Demand in storage organs | N | kg N ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandLV | P Demand in living leaves | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandST | P Demand in living stems | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandRT | P Demand in living roots | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | PdemandSO | P Demand in storage organs | N | kg P ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandLV | K Demand in living leaves | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandST | K Demand in living stems | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandRT | K Demand in living roots | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | KdemandSO | K Demand in storage organs | N | kg K ha-1 | +————–+—————————————————–+—–+—————————-+ | Ndemand | Total crop N demand | N | kg N ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | Pdemand | Total crop P demand | N | kg P ha-1 d-1 | +————–+—————————————————–+—–+—————————-+ | Kdemand | Total crop K demand | N | kg K ha-1 d-1 | +————–+—————————————————–+—–+—————————-+
NPK Stress States and Rates¶
+==============+=====================================================+=====+============================+ | Name | Description | Pbl | Unit | +==============+=====================================================+=====+============================+ | NNI | Nitrogen nutrition index | Y | - | +————–+—————————————————–+—–+—————————-+ | PNI | Phosphorous nutrition index | N | - | +————–+—————————————————–+—–+—————————-+ | KNI | Potassium nutrition index | N | - | +————–+—————————————————–+—–+—————————-+ | NPKI | Minimum of NNI, PNI, KNI | Y | - | +————–+—————————————————–+—–+—————————-+ | RFNPK | Reduction factor for CO2 assimilation based on NPKI | N | - | | | and the parameter NLUE_NPK | | | +————–+—————————————————–+—–+—————————-+
NPK Dynamics States and Rates¶
+=======================+=====================================================+=====+============================+ | Name | Description | Pbl | Unit | +=======================+=====================================================+=====+============================+ | NtranslocatableLV | Translocatable N amount in living leaves | N | kg N ha-1 | +———————–+—————————————————–+—–+—————————-+ | PtranslocatableLV | Translocatable P amount in living leaves | N | kg P ha-1 | +———————–+—————————————————–+—–+—————————-+ | KtranslocatableLV | Translocatable K amount in living leaves | N | kg K ha-1 | +———————–+—————————————————–+—–+—————————-+ | NtranslocatableST | Translocatable N amount in living stems | N | kg N ha-1 | +———————–+—————————————————–+—–+—————————-+ | PtranslocatableST | Translocatable P amount in living stems | N | kg P ha-1 | +———————–+—————————————————–+—–+—————————-+ | KtranslocatableST | Translocatable K amount in living stems | N | kg K ha-1 | +———————–+—————————————————–+—–+—————————-+ | NtranslocatableRT | Translocatable N amount in living roots | N | kg N ha-1 | +———————–+—————————————————–+—–+—————————-+ | PtranslocatableRT | Translocatable P amount in living roots | N | kg P ha-1 | +———————–+—————————————————–+—–+—————————-+ | KtranslocatableRT | Translocatable K amount in living roots | N | kg K ha-1 | +———————–+—————————————————–+—–+—————————-+ | Ntranslocatable | Total N amount that can be translocated to storage | Y | kg N ha-1 | | | organs | | | +———————–+—————————————————–+—–+—————————-+ | Ptranslocatable | Total P amount that can be translocated to storage | Y | kg P ha-1 | | | organs | | | +———————–+—————————————————–+—–+—————————-+ | Ktranslocatable | Total K amount that can be translocated to storage | Y | kg K ha-1 | | | organs | | | +———————–+—————————————————–+—–+—————————-+ | RNtranslocationLV | Weight increase (N) in leaves | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RPtranslocationLV | Weight increase (P) in leaves | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RKtranslocationLV | Weight increase (K) in leaves | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RNtranslocationST | Weight increase (N) in stems | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RPtranslocationST | Weight increase (P) in stems | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RKtranslocationST | Weight increase (K) in stems | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RNtranslocationRT | Weight increase (N) in roots | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RPtranslocationRT | Weight increase (P) in roots | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+ | RKtranslocationRT | Weight increase (K) in roots | Y | kg ha-1 d-1 | +———————–+—————————————————–+—–+—————————-+