The objective of the present study was to evaluate the influency of the conditioning method on the rooting process of mini-cuttings of four Eucalyptus grandis x E. urophylla clones. The mini-cuttings were collected in a mini-clonal hedge carried out in a hydroponic system in small gutters. The experimental design used was of random plots, constituted by five treatments (conditioning of the mini-cuttings in a horizontal position in the container; in a vertical position in vermiculite; in a vertical position in vermiculite+activated carbon; in a vertical position in vermiculite+Phytus, and in a vertical position in vermiculite+PVP) and four clones, in four repetitions and plots of 16 plants per repetition. Evaluations were made of the rooting percentage, height, diameter of the stem and dry mass of the aerial and root parts of the rooted minicuttings in a greenhouse, a shade house and in the open sun. It was concluded that the best results were obtained with the conditioning of the mini-cuttings in a vertical position in vermiculite and, depending on the clone, the vermiculite can be associated with PVP.
Mini-cutting; Stem-cutting rooting; Vegetative propagation and clonal forestry
