The use of irrigation scheduling in modern irrigation systems are a vital role to improve water productivity in arid regions. In Egypt, annually total cultivated area of potatoes on average 160 thousand feddan and this area is estimated at about 15% of the total allocated space for growing vegetables. Surface (SDI) and subsurface drip (SSDI) irrigation are highly efficient, but is not usually used properly. The object of this experiment is to to enhance yield and to save water on potato crop under irrigation methods. Results show that the water requirements was 1993.66 m³/fed. in summer season compared with 1838.18 in Nili season after taking into account the proportion of crop coefficient, with irrigation efficiency was 90% and the rate of leaching were 10% .While  the total water applied crop growth period were 1810, 1971, 1713 and 1892 m³/fed./season in the Nili season at T₁₁, T₁₂, T₂₁ and T₂₂ respectively, compared with traditional irrigation was 2750 m³/fed./season, while in the Summer season were 2050, 2243, 1900 and 2155 m³/fed./season at T₁₁, T₁₂, T₂₁ and T₂₂ respectively, compared with traditional irrigation was 2920 m³/fed./season. The water storage (water consumed) were 715.8 and 730.4 m³/fed./season in the Nili season at T₁₁(SDI), T₂₁(SSDI)respectively, while its values were 814.8 and 769.2 m³/fed./season in the Summery season at T₁₁(SDI), T₂₁(SSDI)respectively. The storage efficiency were 79.7 and 74.7% in the Nili season at T₁₁(SDI), T₂₁(SSDI)respectively, while it's were 83.1 and 78.2 % in the Summer season at T₁₁(SDI), T₂₁(SSDI)respectively. The irrigation water productivity ranges from 4.9 to 7.1 kg/m³ in Nili seasons and 5 to 7.1 in Summery seasons. The irrigation water productivity were 7.0 and 7.1 kg/m³ under T₂₁ in Nili and Summery seasons respectively using subsurface drip. However it's were 6.5 and 6.1 kg/m³ under T₂₁ in Nili and Summery seasons respectively using surface drip, compared with traditional irrigation treatment (T₀₀) was 4.9 and 5 kg/m³ in Nili and Summery seasons respectively. The results were for water saving 34.2, 28.3, 37.7, 31.2% at the Nili season and 29.8, 23.2, 34.9, 26.2%, in Summery season under treatments T₁₁, T₁₂, T₂₁ and T₂₂ respectively.