Investigating with the Ceres-Wheat Model the Impacts of Soil and Climate Factors on Durum Wheat Performance and Earliness in Northern Greece
Understanding crop-climate relationships are an important step to the development of reliable management systems that could allow yield prediction and quality improvement. In the present study, the impacts of soil and climatic factors on phenological development and productivity of three varieties of durum wheat (Triticum turgidum, L. var. durum) have been examined. For this purpose, phenological observations and the final harvest from experiments conducted in the farm of the Cereal Institute in Thermi, Thessaloniki, during 2003–2010 were taken. Furthermore, the extent to which the CERES-Wheat model may predict the observed relations between soil-climatic factors and durum wheat has also been investigated. The root mean squared error (RMSE) for end ear growth ranged between 1.13 d and 1.88 d and from 0.52 to 1.27 d for model calibration and validation, respectively. The RMSE of final grain yield was, on average, 0.21 t ha−1 for model calibration and validation. This study showed that CERES-Wheat has the capacity for simulating satisfactorily the impacts of soil and climate factors on durum wheat performance and earliness in Northern Greece.
KeywordsRoot Mean Square Error Wheat Cultivar Durum Wheat Mean Absolute Percentage Error Phenology Stage
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