1. General Model Information

Name: WATCROS - WATer balance and CROp production Simulation.

Acronym: WATCROS

Main medium: terrestrial
Main subject: agriculture, hydrology
Organization level: population, ecosystem
Type of model: compartment model
Main application:
Keywords: crop, soil, water-balance, root


Mr. S. Hansen.
The Royal Veterinary & Agricultural University, Dept. Agricultural Sciences, Thorvaldsenvej 40, DK-1871 Frederiksberg C, Copenhagen, DENMARK.
Phone: +45.35.283386
Fax: +45.35.283384
email: soeren.hansen@agsci.kvl.dk / sh@dina.kvl.dk



The objective of the model is at field scale to simulate: - Potential production. - Water limited production. - Soil water balance. In the model a crop comprises a root and a shoot (including storage organs). The root is characterized by its dry matter content and its rooting depth. The shoot is characterized by its dry matter content and its leaf area index. The model simulates one growing season. The soil water model is of the tipping bucket type.
Source of the AbstractCAMASE Register of Agro-ecosystems Models

II. Technical Information

II.1 Executables:

Operating System(s): PC.

II.2 Source-code:

Programming Language(s): Microsoft FORTRAN IV (a version in PASCAL exist).

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

Rate variables: Infiltration, percolation out of the rooting zone, transpiration, evaporation (from soil and intercepted water), daily gross photosynthesis, respiration (maintenance and growth) and dry matter production.

State variables: Soil water content (in a number of reservoirs), accumulated dry matter content (shoot and root), development stage, leaf area index, and rooting depth.

III.2.1 Input

Driving variables: global radiation, air temperature, precipitation, and irrigation (daily values). Soil and crop parameters. Input check in model: No.

III.2.2 Output

Evapotranspiration, percolation, soil water storage, dry matter content (shoot and root), leaf area index and rooting depth.
Basic spatial unit: A field.
Time interval of simulation: Daily time step.

IV. References

Aslyng, H.C. & S. Hansen, 1985. Water balance and crop production simulation. Model WATCROS for local and regional application. The Royal Veterinary and Agricultural University, Copenhagen.
Russell, R. & G.W. Wilson, 1992. An agricultural information system for the European Community. Agriculture. An agro-pedo-climatological knowledge-base of wheat in Europe. Final Report. Draft. University of Edingburgh. December 1992.

V. Further information in the World-Wide-Web

  • VI. Additional remarks

    Last review of this document by: T. Gabele: Dec 15 1997
    Status of the document:
    last modified by Joachim Benz Mon Jul 2 18:31:37 CEST 2007

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