1. General Model Information

Name: TENSION

Acronym: TENSION


Main medium: terrestrial
Main subject: agriculture, hydrology, meteorology
Organization level: Ecosystem
Type of model: static-algebraic equations, partial differential equations (finite elements,2D), not specified (2D)
Main application: decision support/expert system, simulation/optimisation tool, database
Keywords: TENSION, SWT, PENMAN-MONTHEITH, CIAT--

Contact:

RICARDO SANCHEZ
P.O.BOX 1537, DOVER, NJ 07802, USA

Phone:
Fax:
email: rsanchezh70@yahoo.com

Author(s):

RICARDO SANCHEZ AND JAVIER VERGARA

Abstract:

This a simulation model that estimate the Soil Water Tension (SWT) to regulate the irrigation cycle in commercial crops. It was developed for Centro Internacional de Agricultura Tropical (CIAT) by Ricardo Sanchez and Javier Vergara. The model uses meteorological data and soil data, with mathematical models, simulate daily SWT which is used as a decision tool to irrigate at CIAT. The model was written in QUICKBASIC and run in any WINDOWS system.


II. Technical Information

II.1 Executables:

Operating System(s): WINDOWS
THROUGH THE AUTHORS

II.2 Source-code:

Programming Language(s): QUICKBASIC
THROUGH THE AUTHORS

II.3 Manuals:



II.4 Data:

Meteorological data from a standard station. Soil data from soil data bases or studies.

III. Mathematical Information


III.1 Mathematics

Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56

III.2 Quantities


III.2.1 Input

meteorological data from a standard station. Soil data.

III.2.2 Output

SWT


IV. References

Sanchez, R and Vergara, J.(1993) Modelo de Simulacion para la Tension de Humedad del Suelo Basado en la Condiciones Meteorologicas (Simulation Model for Soil Water Tension Based on Meteorological Conditions).
Centro Internacional de Agricultura Tropical CIAT.

Allen, R; Pereira, L.S.; Raes, D. (1986,1998) Crop evapotranspiration - Guidelines for computing crop water requirements
FAO Irrigation and drainage paper 56.
FAO - Food and Agriculture Organization of the United Nations Rome, 1998.
Online access



V. Further information in the World-Wide-Web


VI. Additional remarks

The model is used by the Centro Internacional de Agricultura Tropical CIAT, Field Operations Division, to program the irrigation of commercial crops.
Last review of this document by: : Sat Jun 4 21:19:43 2005
Status of the document: Contributed by RICARDO SANCHEZ
last modified by Joachim Benz Wed Dec 14 11:31:19 CET 2005

Go back to Register of Ecological Models (R E M)