The aim of the study was to evaluate effect irrigation depths, via subsurface drip, on technological quality, productivity, and water use efficiency (WUE) sugarcane cultivars. experimental design balanced blocks with 12 two factors: cultivars (CTC 4, IACSP93-3046, RB86-7515, IACSP95-5000 IAC91-1099) depths (dry, deficit supplementary). From estimated evapotranspiration (ETc), equivalent 100% cr...