About WeRise

The Weather-Rice-Nutrient integrated decision support system (WeRise) Prototype is a computer-based decision support tool that provides quick advice to farmers, researchers, and extension workers on optimum planting time, variety to use, and amount and timing of fertilizer application in rainfed rice areas under current and future climate conditions.

The Prototype integrates seasonal climate predictions (such as in Scale Interaction Experiment - Frontier Research Center for Global Change -- SINTEX-F) with crop growth models (such as ORYZA) as described in the following publications:

Bouman, B.A.M., Kropff, M.J., Tuong, T.P., Wopereis, M.C.S., Ten Berge, H.F.M., Van Laar, H.H.
ORYZA2000: modeling lowland rice
International Rice Research Institute, Los Baños, Philippines, and Wageningen University and Research Centre, Wageningen, Netherlands. 235 pp.
Fairhurst T, Witt C, Buresh R, Dobermann A (editors)
Rice: a practical guide to nutrient management. Second edition.
Los Baños (Philippines): International Rice Research Institute and Singapore: International Plant Nutrition Institute and International Potash Institute.
Luo, J.J., Masson, S., Behera, S., Shingu, S., Yamagata, T.
Seasonal climate predictability in a coupled OAGCM using a different approach for ensemble forecasts
J. Clim. 18: 4474-4497.

In developing WeRise, the IRRI-Japan Collaborative Research Project used simplified representation of the effect of weather, crop and nutrient management on rainfed rice systems. The project integrated the output of three research themes (development of seasonal weather forecast, rice genotype adapted to more drought and higher temperature, and nutrient management) for calibration and evaluation of the weather and crop models. Simulated rice growth and development of different cultivars and improved genotypes were compared with crop measurements under potential, water-limited, and N-limited production situations.

The following organizations contributed to the development of WeRise:

  • Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
  • Japan International Research Center for Agricultural Sciences (JIRCAS)
  • Lao PDR National Agriculture and Forestry Research Institute (NAFRI)
  • Lao PDR Agriculture Research Center (ARC)
  • Indonesian Agricultural and Environmental Research Institute (IAERI)
  • Central Java Assessment Institute for Agricultural Technology (AIAT Central Java)

WeRise is being developed through support from the:

  • Ministry of Agriculture, Forestry, and Fisheries (MAFF), Japan.

For additional information, please contact:

Keiichi Hayashi
Soil Scientist
International Rice Research Institute
DAPO Box 7777
Metro Manila, Philippines

© International Rice Research Institute 2013 - 2018
Developed by IRRI:
as a product of research collaboration with:
AIAT Central Java