Climate changes could affect the meteorological parameters and which directly lead to changes in irrigation requirements (IR) and water productivity (WP) of fruit crops. The objective of the current study was to investigate the impacts of potential climate change on irrigation requirements and water productivity of citrus and olive in four governorates of Egypt (El-Bihera, Al-Dakahlia, Matruh and North of Sinai) using a CROPWAT 8.0 model in conjunction with the climate change scenarios A1F1 and B1.The crop irrigation requirements of two crops in all future periods (2020s, 2050s and 2100s) were increased as compared to current period 1990-2019. While, the water productivity values for citrus and olive crops in all future periods (2020s, 2050s and 2100s) were decreased as compared to current period 1990-2019. The IR for citrus and olive were increased by 21.80% and 27.51% respectively. The WP values for citrus and olive were decreased by 43.21% and 17.99%, respectively.
Key words: climate change, CROPWAT, irrigation requirements, water productivity, citrus, olive
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