The use of hydroponic clonal microgardens has been reported successfully to forest species and might become an excellent alternative for fruit species such as blueberry. The objective of this study was to evaluate the rooting of blueberry microcuttings originated from two cultivation systems (conventional and semi-hydroponic) subjected to different concentrations of IBA (indolbutyric acid). The microcuttings of Bluebelle and Woodard blueberry cultivars, from the two cultivation systems, were subjected to different concentrations of IBA (0, 500, 1000, 1500 e 2000 mg.L-1) and packed in plastic boxes containing vermiculite and 90 days after microcutting setting yield was evaluated. Completely randomized experimental design was used with twenty treatments and four replications, composed of ten microcuttings. Percentage of survival and rooting, length of the largest root, number of shoots, average length of shoots, leaf number, fresh mass and dry mass were evaluated. The semi-hydroponic system provided a microcuttings yield significantly superior to the conventional system, however, this material showed smaller percentage of survival and rooting. All treatments showed rooting percentage greater than 50%, even the treatment without the use of IBA at 2000 mg.L-1.
propagation; microcutting; Vaccinium spp
