Dear Listers, I wanted to know if substor has been modified like ceres and cropgro to take into account the CO2 fertilizer effect in DSSAT v.3.5? I'm asking because in the v3 user guide, only ceres and cropgro are mentioned as having been modified, but when I did simulations with substor-potato at different CO2 levels, I had different results (yields). I might also mention that some of these results were quite suprising: in some instances, yields were lower at higher CO2 concentrations... Thank you all for your help and time, Jean-Philippe Brassard Étudiant gradué Laboratoire de climatologie Département de géographie Université de Montréal tel: (514) 343-8039 email: [log in to unmask] _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com