Water stress and scarcity are turning into major obstacles to sustainable agricultural production, especially in arid and semiarid areas. Therefore, this study aimed to investigate the effects of three different irrigation levels, two irrigation techniques, and three buried lateral depths. The three irrigation levels were as follows: full irrigation, I100, comprising 100% crop evapotranspiration (ETc) and two stress irrigation levels, I80 and I60, comprising 80% ETc and 60% ETc). The two irrigation techniques were partial root zone drying (PRD) and conventional single lateral (CSL) drip irrigation. The three buried lateral depths were 0 cm [surface drip irrigation (SDI)] and 15 cm and 30 cm [subsurface drip irrigation (SSDI)]. The effects on the growth and physiological parameters, productivity of potatoes (Solarium tuberosum L. cv. Spunta), and water use efficiency were evaluated. The findings indicated that irrigation treatment I100 applied under PRD and SSDI with a buried lateral depth of 15 cm produced the maximum mean values for potato yield, growth parameters (including plant height, stem diameter, number of branches per plant, leaf area, and dry weight), and physiological parameters (such as relative water content, membrane stability index, and relative chlorophyll concentration). The mean values of potato yield decreased when irrigation deficit treatments increased from I100 to I80 and I60. In contrast, irrigation water use effi-ciency of the I60 treatment was higher than that of the I80 and I100 treatments by 5.74% and 20.24%, respectively. The application of PRD resulted in higher potato yield values for irrigation treatments I100, I80, and I60. When irrigation water was abundant, the full irrigation treatment (I100) and PRD irrigation under SSDI with a buried lateral depth of 15 cm may be recommended to optimize potato crop production. Under water scarcity, applying the RDI treatment (I80) and PRD irrigation under SSDI with a buried lateral depth of 15 cm will conserve 20% of the irrigation water applied with minimal reduction in potato crop production.