Dear Dr. Hoogenboom: Thank you very much for your mails. I have a question on the paper of "The potential of applying DECISION SUPPORT SYSTEMS TO IMPROVE...." you, Mr. Wang and Mr. Qu wrote for the European Conference. Did you do the calibration and validation on CERES-Wheat model in the loess Plateau? Thank you. Hong Hong Wang SPARC Box 1030 Swift Current, SK Canada S9H 3X2