Enraizamento de estacas de ipê-amarelo (tabebuia serratifolia (vahl) nichols) com uso de diferentes concentrações de ácidos sintéticos

Abstract

Being a wood-in-law with great economic, forestry and environmental importance, used in the timber industry, civil and naval construction, reforestation, landscaping and tree planting, the yellow ipe was used in this experiment, conducted from October 5 to 10 December 2013, in a greenhouse owned by the Federal University of the South and Southeast of Pará, Faculty of Mining Engineering and Environment of University Campus Marabá, in order to verify the influence of different concentrations of indole butyric acid and naphthalene acetic acid the rooting of yellow ipe. In the experiment we used the following treatments: control; naphthalene acetic acid 0.2%; naphthalene acetic acid 0.4%; naphthalene acetic acids and indole butyric to 1%; and indole butyric acid and 2%. The experimental design was completely randomized with five treatments and four replicates, each replicate with six samples, totaling one hundred and twenty seedlings. The parameters evaluated were: percentage of survival and rooting, leaf number, root number and fresh weight of root. The results were subjected to analysis of variance and means were compared by Tukey test at 5%. Based on these results, it was found that there was no statistical significance of regulators in relation to the control, but there was a positive increase in all parameters for naphthalene acetic acid 0.4%.