| constant | cCFEV | correction factor of time course of soil evaporation (value between 1 and about 4) | DOUBLE | 1 | - | - | 2.0 |
| constant | cCRAIRC | critical soil air content for aeration | DOUBLE | 1 | - | - | 0.07 |
| constant | cDEPNR | crop group number for soil water depletion | DOUBLE | 1 | - | - | 4.5 |
| constant | cIAIRDU | air ducts in roots present (=1) or not (=0) | BOOLEAN | 1 | - | - | false |
| constant | cIOPT | indicates optimal (=1), water limited (=2), water and N limited (=3) and | INT | 1 | - | - | 0 |
| constant | cIRRI | automatic irrigation (=1), actual irrigation from table (=2) or non irrigated(=0) | INT | 1 | - | - | 0 |
| constant | cIRRTAB | table with effective applications of irrigation water as function of day number | DOUBLEARRAY | mm/d | - | - | - |
| constant | cKSUB | maximal percolation rate from lower zone to deeper soil layers | DOUBLE | mm/d | - | - | 10.0 |
| constant | cRDI | Initial rooting depth | DOUBLE | m | - | - | 10.0 |
| constant | cRDMCR | crop-specific maximum rooting depth | DOUBLE | m | - | - | 125.0 |
| constant | cRDMSO | maximum rooting depth as determined by soil structure | DOUBLE | m | - | - | 150.0 |
| constant | cRUNFR | average fraction of precipitation lost by runoff | DOUBLE | 1 | - | - | 0.0 |
| constant | cSM0 | soil moisture content at saturation | DOUBLE | m3/m3 | - | - | 0.45 |
| constant | cSMDRY | soil moisture content at airdry (pF= 6.0) | DOUBLE | m3/m3 | - | - | 0.15 |
| constant | cSMFC | soil moisture content at field capacity (pF= 2.3) | DOUBLE | m3/m3 | - | - | 0.35 |
| constant | cSMI | soil moisture content in initial root zone at planting or emergence | DOUBLE | m3/m3 | - | - | 0.3 |
| constant | cSMLOWI | initial soil moisture content in lower zone at planting or emergence | DOUBLE | m3/m3 | - | - | 0.3 |
| constant | cSMW | soil moisture content at wilting point (pF= 4.2) | DOUBLE | m3/m3 | - | - | 0.2 |
| input | iEMERG | has emerged | BOOLEAN | 1 | - | - | false |
| input | iES0 | potential evaporation from soil surface | DOUBLE | mm/d | - | - | 0.0 |
| input | iETC | potential transpiration of crop (with CO2 correction for C3 crop) | DOUBLE | mm/d | - | - | 0.0 |
| input | iEVMAX | Potential evaporation | DOUBLE | mm/d | - | - | 0.0 |
| input | iRAIN | precipitation (output of routine WEATHR) | DOUBLE | mm/d | - | - | 0.0 |
| input | iRD | - | DOUBLE | m | - | - | 0.0 |
| input | iRR | - | DOUBLE | m/d | - | - | 0.0 |
| input | iResetWaterBalance | sets soil water to ininital state if true | BOOLEAN | 1 | - | - | false |
| input | iTRMAX | Potential transpiration | DOUBLE | mm/d | - | - | 0.0 |
| state | sDIRRO | - | DOUBLE | | - | - | 0.0 |
| state | sDSLR | counter of the days since last rain | DOUBLE | 1 | - | - | 0.0 |
| state | sSMACT | actual soil moisture content in rooted zone | DOUBLE | mm3/mm3 | - | - | 0.0 |
| state | sSMACTL | actual soil moisture content in lower zone | DOUBLE | mm3/mm3 | - | - | 0.0 |
| state | sTDRAIN | cumulative drainage to the sub-soil | DOUBLE | mm | - | - | 0.0 |
| state | sTESOIL | cumulative soil evaporation | DOUBLE | mm | - | - | 0.0 |
| state | sTIRR | cumulative irrigation | DOUBLE | mm | - | - | 0.0 |
| state | sTRAIN | cumulative precipitation | DOUBLE | mm | - | - | 0.0 |
| state | sTRUNOF | cumulative surface runoff | DOUBLE | mm | - | - | 0.0 |
| state | sTTRANS | cumulative crop transpiration | DOUBLE | mm | - | - | 0.0 |
| state | sTWDR | cumulative water added to the rooted zone by root growth | DOUBLE | mm | - | - | 0.0 |
| state | sWAVT | total available water in rooted zone | DOUBLE | mm | - | - | 0.0 |
| state | sWAVTL | total available water in lower zone (below rooted zone) | DOUBLE | mm | - | - | 0.0 |
| state | sWTOT | amount of total water in rooted zone | DOUBLE | mm | - | - | 0.0 |
| state | sWTOTL | amount of total water in lower zone (below rooted zone) | DOUBLE | mm | - | - | 0.0 |
| state | sWTOTLN | new amount of total water in lower zone (below rooted zone) | DOUBLE | mm | - | - | 0.0 |
| state | sWTOTN | new amount of total water in rooted zone | DOUBLE | mm | - | - | 0.0 |
| rate | rDIRR | effective application of irrigation water | DOUBLE | mm/d | - | - | 0.0 |
| rate | rDWAT | change in available water in rooted zone | DOUBLE | mm/d | - | - | 0.0 |
| rate | rDWATL | change in available water in lower zone | DOUBLE | mm/d | - | - | 0.0 |
| rate | rDWOT | change in total water in rooted zone | DOUBLE | mm/d | - | - | 0.0 |
| rate | rDWOTL | change in total water in lower zone | DOUBLE | mm/d | - | - | 0.0 |
| rate | rEVA | - | DOUBLE | | - | - | 0.0 |
| rate | rPERC3 | percolation from lower zone to deeper soil layers | DOUBLE | mm/d | - | - | 0.0 |
| rate | rRAIN0 | - | DOUBLE | mm/d | - | - | 0.0 |
| rate | rRIRR | - | DOUBLE | mm/d | - | - | 0.0 |
| rate | rRUNOF | water loss by surface runoff | DOUBLE | mm/d | - | - | 0.0 |
| rate | rTRA | - | DOUBLE | mm/d | - | - | 0.0 |
| rate | rWDR | change in total water in the rooted zone by root growth | DOUBLE | mm/d | - | - | 0.0 |
| rate | rWDRA | - | DOUBLE | mm/d | - | - | 0.0 |
| out | RDM | soil/crop related maximal rooting depth | DOUBLE | m | - | - | 0.0 |
| out | TRANRF | reduction factor for crop growth due to drought/wetness | DOUBLE | 1 | - | - | 0.0 |
| out | WBAL | balance for checking soil water balance in rooted zone | DOUBLE | mm/d | - | - | 0.0 |
| out | WBALL | balance for checking soil water balance in lower zone | DOUBLE | mm/d | - | - | 0.0 |