Evaluación de cuatro sustratos para la propagación sexual de Tabebuia chrysantha Jacq en la parroquia cube cantón Quininde provincia de Esmeraldas.

Abstract

This research aimed to evaluate four substrates in the sexual propagation of the forest species Tabebuia chrysantha Jacq in Cube Town, Quinindé City. A complete randomized block design (DBCA) was applied, with four substrates which were: Sand, fertilizer, and agricultural land, consequently the mixture of these substrates produced the treatments: Treatment 1 (Sand), Treatment 2 (Sand 20%, organic peat 30%, agricultural land 50%), Treatment 3 (Sand 25%, organic peat 35%, agricultural land 40%), Treatment 4 (Sand 30%, organic peat 40%, agricultural land 30%), the verification of assumptions of normality of the variables was carried out with the Shapiro Wilk tests and the Homoscedasticity test, As the data did not present normality, the non-parametric Kruskal Wallis test was performed with a probability of 0.05, with which the evaluation of the seedlings corresponding to the height, diameter at neck height (DNH and its number of sheets, through the use of tools such as a ruler, caliper for the registration of the DNH at 30, 60 and 90 days respectively, in the results of this study. It was determined that the treatment that had the best results was T2, with a median of 18.80 cm in height, a median in the DNH of 6.60 mm at 90 days, and several leaves of 8.86 as a median at 90 days, while the substrate that presented insufficient data was the T1 treatment. In conclusion, it could be observed that the plants present in T2 are the ones that had the best results because they presented the best characteristics in terms of height growth, diameter, and number of leaves. Therefore the production costs with the combination of the substrates are profitable for their production.