Parameterization and Evaluation of the DSSAT-CANEGRO Model for Sugarcane CP57-614 in Khuzestan Climate Condition

Document Type : Research Paper

Authors

1 Ph.D. Student of Irrigation and Drainage, Shahid Chamran University of Ahvaz, Ahvaz, Iran

2 Professor of Irrigation and Drainage, Shahid Chamran University of Ahvaz, Ahvaz, Iran

3 Retired professor of Irrigation and Drainage, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

The purpose of this study was to calibrate and evaluate DSSAT-CANEGRO Modelusing field data from two datasets for cultivar CP57-614, in Khuzestan. The experimental plan was performed at three levels of irrigation water (full and deficit irrigation) with three replicates in a completely randomized block design during cultivation years of 85-86 and 94-95. First of all, model calibration was done to find out the important input parameters by GLUE method. DSSAT-CANEGRO Model consists of 20 Genetic parameters. In order to reduce some parameters, parameterization was conducted using field data. The comparison between predicted and measured data showed that the model efficiency was 0.69 to 0.75 for aerial dry mass, 0.67 to 0.7 for stalk dry mass and 0.18 to 0.25 for sucrose. The results indicated that the sucrose prediction by CANEGRO model is weak as compared to other parameters. This is due to measuring sucrose at the end of grown season.

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References

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Iranian Journal of Soil and Water Research
Volume 50, Issue 6
October 2019
Pages 1331-1340

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