1. General Model Information

Name: OPUS1 & 2 - Oil Palm sUmmary Simulator.

Acronym: OPUS1_2

Main medium: terrestrial
Main subject: agriculture, biogeochemistry, forestry
Organization level: population
Type of model: ordinary differential equations
Main application:
Keywords: oil palm, growth, water limited conditions


Ir. W. Gerritsma.
Wageningen Agricultural University, Dept. Agronomy, P.O.Box 341, 6700 AH Wageningen, THE NETHERLANDS.
Phone: + 31 317 4 83074
Fax: +31.317.484575
email: Wouter.Gerritsma@USERS.AGRO.WAU.NL



The model simulates oil palm growth and production under potential or water limited production circumstances. The photosynthesis routines of SUCROS*87 are the backbones of the potential productivity model. Dry Sahel (DRSAHE) water balance is used to model water limitation. Dry matter partitioning is based on Corley's overflow hypothesis of yield.

Purpose of the model:

Model parentage: Based on SUCROS*87.

Source of the AbstractCAMASE Register of Agro-ecosystems Models

II. Technical Information

II.1 Executables:

Operating System(s): Mainframe, mini, or PC. Contract necessary: Costs: Comments:

II.2 Source-code:

Programming Language(s): Microsoft FORTRAN and FSE*.

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

Rate variables: Daily canopy photosynthesis, maintenance and growth respiration are based on SUCROS*. A long term assimilate pool is kept to avoid negative growth rates.

III.2.1 Input

Input check in model: Yes.

III.2.2 Output

All state and rate variables plus intermediate values.
Basic spatial unit: Ha.
Time interval of simulation: Up to 25 years.

IV. References

V. Further information in the World-Wide-Web

VI. Additional remarks

Parentage: Based on SUCROS*87.
Last review of this document by: Tue Sep 23 1997
Status of the document:
last modified by Joachim Benz Mon Jul 2 18:31:37 CEST 2007

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