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Compendium on methods and tools to evaluate impacts of, and vulnerability and adaptation to, climate
change
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RICEMOD
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Description
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RICEMOD is a FORTRAN and BASIC based ecophysiological model for irrigated rice production. It
includes a number of physical parameters, including accommodation of subroutines dealing with soil
and plant chemistry as well as physical processes of the atmospheric environment.
The model is very sensitive to soil parameters and has been expanded to consider soil water
deficit. Model components include maximum leaf area index, timings of plant growth initiation and
harvest, radiation-use efficiency (RUE), and harvest index (HI).
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Appropriate Use
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To study the relative constraining effects of radiation, leaf blade nitrogen content, respiration
rate, and assimilate partitioning on rice plant growth. Useful for predicting future production
scenarios. Does not include the influence of CO2.
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Scope
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All locations; agricultural sector; site-specific.
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Key Output
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Total area index (LA1, leaves and stem), growth rates, dry weights, dry matter partitioning, grain
yield, number of grains, CO2 assimilation, amount of radiation absorbed by the canopy.
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Key Input
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Data intensive; requires soil, plant, and atmospheric data (rainfall, pan evaporation, radiation,
minimum and maximum temperature, day length).
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Ease of Use
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Relatively easy to use, although requires some expertise and is fairly data intensive.
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Training Required
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Requires knowledge of soil physical properties and some background in agronomics.
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Training Available
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IRRI offers training
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Computer Requirements
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Programmed in FORTRAN IV and BASIC. Requires an IBM-compatible PC 370/135.
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Documentation
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McMennary, J. and J.C. O’Toole. 1985. RICEMOD: A Physiologically-Based Rice Growth Model. IRRI
research paper series #87. 1099 Manila, The Philippines.
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Applications
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Used to indicate leaf water stress and predict the growth and yield component of different rice
varieties in a number of rice-producing countries, including the Philippines.
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Contacts for Framework, Documentation, Technical Assistance
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Dr. John Sheehy
Chairman of the GCTE Rice Working Group, IRRI, PO Box 933, 1099 Manila, The Philippines; Tel:
63.2.8181926/884869; Fax: 63.2.8178470/8182087; e-mail: irri@cgiar.com; websites: http://www.cgiar.org/ and http://www.irri.org.
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Cost
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Contact IRRI for information
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References
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See documentation
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