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Determination of Upland rice Cultivar Coefficient Specific Parameters for dssat (Version 4.7)-ceres-rice crop simulation model and Evaluation of the crop model under Different Temperature Treatments conditions

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American Journal of Plant Sciences 2021年第5期12卷 782-795页

作者： Shams Shaila Islam Ahmed Khairul Hasan Department of Agronomy Faculty of Agriculture Hajee Mohammad Danesh Science and Technology University Dinajpur Bangladesh Department of Agronomy Faculty of Agriculture Bangladesh Agricultural University Mymensing Bangladesh

To develop basis for strategic or arranged decision making towards crop yield improvement in Thailand, a new method in which crop models could be used is essential. Therefore, the objective of this study was to measure cultivar specific parameters by using dssat (v4.7) cropping simulation model (CSM) with five upland rice genotypes namely Dawk Pa-yawm, Mai Tahk, Bow Leb Nahng, Dawk Kha 50 and Dawk Kahm. Experiment was laid out in a Completely Randomized Design (CRD) with split plot design. Results showed that five upland rice genotypes had significantly affected each other by different temperature treatments (28°C, 30°C, 32°C) with grain yield, tops weight, harvest index, flowering, and maturity date. At the same time, all the phenological traits had highly significant variation with the genotypes. The cultivar specific parameters obtained by using a temperature tolerant cultivar (Basmati 385) with five upland genotypes involved in the dssat4.7-CSM. model evaluation results indicated that utilizing the estimated cultivar coefficient parameters, model simulated well with varying temperature treatments as indicated by the agreement index (d-statistic) closer to unity. Hence, it was estimated that model calibration and evaluation was realistic in the limits of test cropping seasons and that CSM fitted with cultivar specific parameters can be used in simulation studies for investigation, farm managing or decision making. This electronic document is a “live” template. The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document.

关键词： dssat-ceres-rice crop simulation model Temperature Phenology Upland rice Genotypic Cultivar Coefficient

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