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Evaluation of the Impacts of Climate Change on Irrigation Requirements of Maize by CROPWAT Model

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Abstract

In the presented study, the eventual effects of climate change on maize farming under Mediterranean climatic conditions were investigated by CROPWAT Model. Irrigation scheduling and determining water requirements are of great importance in adapting the climate change. The CROPWAT model is a software used to calculate the response of crop water requirements to different climatic conditions and irrigation strategies. The reference (1961–1990) and the future (2070–2099) climate data determined by the ICTP’s Regional Climate Model system version 3 (RegCM3) were used as climate data in the study. According to the results, the mean reference evapotranspiration of growing season in the study site will be 0.49 mm day−1 higher on average in the future. In the period of 2070–2099, irrigation water requirements for maize will be 7.37% more on average than they were from 1961 to 1990. For the periods of 1961–1990 and 2070–2099, average crop evapotranspiration was calculated to be 480.1 and 513.4 mm, respectively. These simulation results revealed that irrigation scheduling in maize farming in Mediterranean climatic zones should be adjusted to the climate change.

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Acknowledgements

The authors are gratefully acknowledged to the Turkish State Meteorological Service for sharing meteorological data used for this study.

Funding

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Contributions

Conceptualization: AKY, BS; Methodology: AKY, BS; Data acquisition: AKY; Analysis and interpretation: AKY, BS; Visualization: AKY, BS; Writing—original draft preparation: AKY, BS; Writing—review and editing: AKY, BS

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Correspondence to Ali Kaan Yetik.

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A.K. Yetik and B. Şen declare that they have no competing interests.

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Yetik, A.K., Şen, B. Evaluation of the Impacts of Climate Change on Irrigation Requirements of Maize by CROPWAT Model. Gesunde Pflanzen 75, 1297–1305 (2023). https://doi.org/10.1007/s10343-022-00751-x

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  • DOI: https://doi.org/10.1007/s10343-022-00751-x

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