Dear Dssaters: I am one of assistants in GIS center of Feng Chia University, Taiwan, R.O.C., I have a great interest on DSSAT and AEGIS/WIN. I utilitize DSSAT v3.0 - CERES-Rice model for the Simulation Study on the Productivity of Paddy Rice under Various Irrigation Regions, I have questions on the CERES- Rice model as bellow: 1.If I wish to fix the water depth for 30-50mm during the whole growth stage, do I should choose the FLOOD (IR003) from Irrigation and Water Management Method? or Should I use the IR006 and IR009 method to control the flood depth and bund height? 2.Do all of the input variables from FILEX be used at the model simulation? or some of them are not used at present package which will be used in the future that means if we don't give a value to those variables, the result won't be affected. Does anyone has the experiments and would be able to give me some information? Thank you very much for your time and patiences. Regards, Hui-Yen Chen ------------------------------------------------------------------------ Liz (Hui-Yen Chen) Research Assistant Geographic Information Systems Center Feng Chia University 100 WenHwa Rd., Taichung, Taiwan, R.O.C. Phone:886-4-4516669 Fax:886-4-4519278 email:[log in to unmask] ------------------------------------------------------------------------