EVALUATION OF THE DSSAT MODEL FOR MAIZE YIELDESTIMATE UNDER DIFFERENT IRRIGATION REGIMESRoja M., Gumma M.K. and Reddy M.D.Abstract This study has been designed to evaluate the performance of DSSAT model for yield estimation of maizeunder different irrigation levels and methods. Experiment has been conducted during rabi 2015-16 in waterTechnology Centre, Rajendranagar. Observed yields were compared with the models simulated yields.From the results it has been revealed that drip irrigation scheduled at 1.0 Epan produced higher growth,yield, and yield attributes than the other surface and drip irrigation treatments, while surface irrigationscheduled at 0.6 IW/CPE produced lower growth, yield, and yield attributes than the other treatments.Model results were also in quite agreement with the observed results where the maximum and minimumprediction errors in grain yields with DSSAT was 0.40 % and 14.86 %. Correlation coefficient of 0.98 and0.97 was observed for water productivity and grain yield. From this study it can be concluded that DSSATcan be used for yield estimation in maize under different irrigation regimes with minimal error. Modelshould be used after proper calibration for better results. |