Frequently Asked Questions

Frequently Asked Questions

What is ORYZA2000 ?

ORYZA2000 is a crop modeling tool used to to simulate the growth, development, and water balance of lowland rice under conditions of potential production and water and/or nitrogen limitations.

What is ORYZA ?

ORYZA, or ORYZA version 3.0 (ORYZA v3), evolved from the earlier versions of ORYZA2000 v2.13, v2.12, v2 and v1, which are the integrated successors of ORYZA1 (Kropff et al., 1994), ORYZA_W (Wopereis et al., 1996) and ORYZA_N (Drenth et al., 1994).

For more details on the modules and development of the ORYZA model, please read the Release Notes.

Why should I use ORYZA ?

https://sites.google.com/a/irri.org/oryza2000/why-use-oryza2000

How can I get ORYZA ?

ORYZA is distributed free of charge and can be downloaded HERE.

What do I need to prepare before using ORYZA for a basic simulation ?

The ORYZA accepts 6 input data files, each with a specific file format:
- - Control file
  - Experiment data file
  - Crop data file
  - Soil data file (optional: needed only for water-limited simulation)
    - - LOWBAL - data file meant for lowland soils
      - PADDY - data file meant for paddy soils
      - SAHEL - data file meant for freely draining upland soils
      - SAWAH - data file meant for lowland or upland soils
      - SOILPF - data file meant for soil water tension read from file
  - Weather file
  - Rerun file (optional)

Where can I get support ?

Send an email to the Crop Modeling Team for calibration and/or minor technical support.

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