‘Tropical Sunki’ mandarin and hybrid citrus rootstocks under ‘Pera’ sweet orange in cohesive soil and As climate without irrigation

The search for alternative rootstocks to the ‘Rangpur’ lime tree is a challenge sustainability of citrus in Tabuleiros Costeiros (Coastal Tablelands) Northeastern Brazil. New varieties should meet high drought tolerance with water deficit, cohesive soils, resistance diseases and inducing production fruit. In this work, performance ‘Pera’ sweet orange was evaluated on ‘Tropical Sunki’ mandarin 27 hybrid Umbaúba, Sergipe. A local selection control. Planting 2013 at spacing 6.0 × 3.0 m, without irrigation. Tree size, fruit yield quality, survival rate graft-compatibility were assessed until 2019. Experimental design completely randomized blocks 29 treatments, three replicates four plants plot. Two indices applied data assist decision making. induced similar cumulative relation lime, suggesting good former rootstock. TSKC (LCR TR) - 073 slightly lower productivity, compensated by higher productive efficiency concentration soluble solids, whereas LCR TR 001 HTR 166 highly efficient dwarfing rootstocks. multiplicative rank sum showed correlation, both classifying mandarin, ‘Santa Cruz Rangpur’ LVK 010 038, 127, addition aforementioned hybrids, as superior lime.