Enraizamento de diferentes tipos de estacas de oliveira (Olea europaea L.) utilizando ácido indolbutírico

Abstract

The present work was developed with the objective to evaluate the influence of the number of leaves and test the effect of different concentrations of IBA (indolbutyric acid) in the cutting propagation of olive tree. The experimental design was complete randomized, in a two factors arrangement (4 x 3), with four different concentrations of IBA (0, 1000, 2000 and 3000 mg L-1) and three different types of cuttings (without leaves, one pair of leaves and two pairs of leaves). The cuttings were padronized with 12 cm of length and treated with IBA for five seconds. After that, they were taken to polysty rene trays filled with Plantmax® and stayed under house green conditions for 90 days. Rooting and sprouting percentage, number of leaves, sprouts and roots, sprout and root length were evaluated. IBA only influenced the root system; the concentration of 2000 mg L-1 promoted best results for rooting percentage and the concentration of 3000 mg L-1 IBA in cuttings with two pairs of leaves promoted best results for number of roots and root length; cuttings of absent leaves favored larger sprouting in the cuttings.