Scientific documentation

The book ORYZA2000: modeling lowland rice documents the ecophysiological crop model ORYZA2000 to simulate the growth, development, and water balance of lowland rice. ORYZA2000 follows the principles of the “School of de Wit” crop growth simulation models (Bouman et al 1996). It simulates the growth and development of a rice crop in situations of potential production, water limitations, and nitrogen limitations (de Wit and Penning de Vries 1982).

The complete online copy of the book can be found online by clicking this link.

The content of the accompanying CD of the book is also available for download (click HERE).

Software Development

ORYZA2000 software and FSEWin Shell development

D.W.G. van Kraalingen
Alterra, Droevendaalsesteeg 3
6708 PB Wageningen
or: P.O. Box 47, 6700 AA Wageningen

ORYZA v3 software development

ao Li
International Rice Research Institute
Los Baños, Philippines
or: P.O. Box 7777, Makati , Philippines


B.A.M. Bouman
International Rice Research Institute

M.J. Kropff
Wageningen University and Research Centre

T.P. Tuong
International Rice Research Institute

M.C.S. Wopereis
International Fertilizer Development Center

H.F.M. ten Berge
Wageningen University and Research Centre

H.H. van Laar
Wageningen University and Research Centre


Bill Hardy
International Rice Research Institute

Supplemental information on ORYZA crop model

ORYZA2000 Modeling: An Introduction

An introduction to rice modeling using ORYZA2000.


FORTRAN Simulation Environment (FSE)
A helpful guide to using the Fortran Simulation Environment as the shell used for ORYZA2000 rice modeling and simulation.
Potential Production

Modeling rice production at potential conditions.


Nitrogen-limited production

Modeling rice production at nitrogen-limited conditions.

Water-limited Production

Modeling rice production at water-limited conditions.


Rice Crop Parameters

Important crop parameters considered in modeling rice production using ORYZA2000.