Effect of subsurface irrigation on the productivity and technological quality of sugarcane

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% crop ETc were defined for supplemental treatment 50% deficit. amounts sucrose in juice (POL) cane (PC) did not differ among cultivars; however, additional provided higher values evaluated parameters. purity levels all treatments superior those recommended (85%) differed between In supplementary regime, IAC91-1099 cultivar had highest total recoverable sugar value (TRS), equal 165.62 kg Mg-1, yields stalks sugars, 157.02 26.01 Mg ha-1, respectively. WUE dry regime CTC4 RB86-7515 cultivars, these considered tolerant average gains yield similar irrigation; consequently, there substantial reductions requirements addition energy savings.