In arid regions where irrigation is required for crop production,
growers are seeking methods to save water by increasing irrigation
efficiency. Cucumber (Cucumis sativus L.) is a favorite commodity
for exportation and local consumption and represents one of
the most important economic vegetables in Egypt. The total cultivated
area of cucumber in Egypt was about 26,071 ha in 2012
(FAO Statistical Yearbook, 2012). It requires more water than grain
crops (Li and Wang, 2000; Mao et al., 2003). Mao et al. (2003) found
that fresh fruit yields of cucumber were highly affected by the total
volume of irrigation water at all growth stages. Recently the available
amount of water to agriculture is declining worldwide because
the rapid population growth and the greater incidence of drought
caused by climate change and different human activities