Initial development of Tahiti acid lime trees on different rootstocks in the semiarid region of Ceará, Brazil
Débora Costa Bastos, Kássio Ewerton Santos Sombra, Francisco Leandro Costa Loureiro, Alexandre Caique Costa e Silva & Orlando Sampaio Passos
Tahiti acid lime is the most cultivated lime tree in the Northeast region of Brazil. The present study aimed to investigate the initial development of CNPMF 01 Tahiti acid lime tree clones grafted on rootstocks in the semiarid region of Ceará. The experiment was arranged in a completely randomized design, using the nuclear clones CNPMF 01 Tahiti acid lime on different rootstocks, according to the treatments: T1 - Rangpur Santa Cruz lime lime; T2 - Sunki Tropical Tangerine; T3 - Citrandarin Indio; T4 - Citrandarin Riverside; T5 - Swingle Citrumelo. Four seedlings were transplanted per treatment, in a soil classified as Typical Orthic Hydromorphyc Vertisol (SiBCS), spaced 5 x 4 m. We evaluated the height (H), diameter between plants and between rows (Dl and Dr), using the data to calculate the average canopy volume (V3), and measured the diameter of the stem 5 cm above (D↑) and below (D↓) grafting, conducting biometric evaluations at 18, 24 and 30 months after transplantation. The treatments T1 and T4 showed the best results, reaching the following final values: height: T1 = 2.12 m and T4 = 2.12 m; diameter between plants: T1 = 3.53 m and T4 = 3.17 m; diameter between lines: T1 = 3.63 m and T4 = 3.17 m; canopy volume: T1 = 14.40 m3 and T4 = 11.29 m3; stem diameter (D↑ and D↓): T1 = 104.40 mm and 114.16 mm, T4 = 80.76 mm and 74.56 mm. The Citrandarin Riverside and Rangpur Santa Cruz lime rootstocks induced greater adaptation and vegetative development of the nuclear clone of CNPMF 01 Tahiti acid lime tree, as reported in the literature, while Swingle Citrumelo led to the lowest measures.