The objective of present study was to evaluate the effect of gibberellic acid (GA3) on the fruit set and fruit quality in atemoya 'Gefner' under irrigated conditions in the North of Minas Gerais. The experiment was performed in a commercial farm of atemoya 'Gefner'. The experimental design was completely randomized blocks with four replicates and five fruits per parcel. Five different doses of the commercial product Pro-Gibb ®, (10% of GA3) in the form of soluble powder was used as follow: 0 (control), 250, 500, 750 and 1000 mg.L-1. The product was applied directly on flowers at anthesis stage and more three applications were performed (7, 21 and 35 days after anthesis stage). Fruit set, fruit length and fruit diameter were evaluated weekly during 19 weeks. After harvest the physical-chemical characteristics were submitted to analysis of variance and the effects of doses were tested and adjusted in regression equations. The percentage of fruit set, the fruit weight, pulp weight, the peel weight and pH increase with increasing of dose of GA3. The application of GA3 produces seedless fruit and does not affect the soluble solids content of atemoya 'Gefner' fruits.
Annona squamosa x Annona cherimola; GA3; fructification; plant growth regulator
