Indução floral da lima ácida 'Tahiti' com o uso do paclobutrazol e poda

Abstract

The floral induction of acid lime 'Tahiti' can interfere with fruit supply at the time of the off season, where prices achieved by the producer reach a value greater than 400% compared to those practiced in the time of harvest. The objective of this study was to evaluate the use of paclobutrazol (PBZ) and pruning in the management of floral induction of acid lime Tahiti' in irrigated conditions produced in the North of Minas Gerais State. This study was conducted in a commercial orchard of four years old, with adult plants exhibiting crown diameter of three to four meters. It was used a completely randomized design in a 2x5 factorial arrangement. The first factor consisting of plants with and without pruning and the second factor consists of 5 doses of PBZ (0.0; 0.5; 1.0; 1.5 and 2.0 gai/m crown diameter) with five replicates and two plants per plot. Vegetative characteristics, reproductive culture and physical and chemical properties fruit were evaluated. In the system with pruning, the increase in PBZ doses decreased the number of sprouts issued by branch 33% and the length of the budding 21% compared to the control without PBZ. The percentage of flowered branches and production were significantly higher in no pruning system. Regardless of pruning factor, and the larger PBZ doses applied in both systems, with and without pruning, they promoted the increase in flowering and production.