Uso de paclobutrazol e poda drástica na indução floral de lima ácida 'Tahiti'

Abstract

The use of growth regulators and pruning management may be feasible to induce flowering of 'Tahiti' acid lime in the offseason. This study aimed to evaluate different doses of paclobutrazol (PBZ) combined or not with heavy pruning on floral induction of 'Tahiti' acid lime. The experimental design was in randomized blocks, in separate areas on the same farm with or without pruning of plants, testing five doses of PBZ, including the control, with five replications and two plants per plot. Doses of PBZ were: 0.0; 0.3; 0.6; 0.9 and 1.2 g / m linear of canopy. We evaluated vegetative and reproductive characteristics and post- harvest fruit quality. The data were subjected to joint analysis to examine the interaction between PBZ and pruning; the managements were compared by F test and Dunnett test for comparison of the control. The application of PBZ does not induce the flowering neither postharvest fruit quality of 'Tahiti' acid lime indicating that the doses of PBZ may have been low to affect the growth of 'Tahiti' acid lime. The plants management without heavy pruning provides greater productivity. The heavy pruning influences the larger length, firmness, and thickness of the fruit rind, which decrease the juice yield and percentage of fruit juice.