Paclobutrazol no florescimento e na produção da mangueira 'Tommy Atkins'

Abstract

Efficient techniques for controlling the production time are important for the economical success in the mango cultivation. In this study, it was evaluated the flowering and production of mango fruit, variety Tommy Atkins, in response to the paclobutrazol application (PBZ), either in the soil (2 mL of the active ingredient per plant), or on foliage at different doses (0.5, 1, 1.5 and 2 mL of a.i. per plant in single or two applications), under conditions of irrigated cultivation, in the semi-arid area of Northeastern of Brazil. The studied variables were percentile flowering, number of fruits, and production per plant, being appraised in three times after the application of the growth regulator (68 to 110, 131 to 179 and 190 to 216 days after, for the flowering of the plant; and 162 to 203, 256 to 287 and 327 to 337 days after, for the number and production of fruits for plant). The application of PBZ in the soil determined percentile of flowering, number of fruits and production for plant superiors to the control (water to foliage) and to the treatments with PBZ to foliage, besides anticipating the flowering of the plants. PBZ to foliage, independent of the application number and used doses, didn't overcome the control significantly. Applied PBZ in the soil anticipated the flowering in 23 days, in relation to the control and to the treatments with PBZ to foliage, in the second evaluation time.