Produtividade da óleorresina de copaíba (Copaifera spp.) em função das relações dendrométricas e edafoclimáticas

Abstract

The aim of this work was to verify if the productivity of Copaifera spp. of native trees from the Tapajós National Forest is influenced by seasonal, dendrometric and soil fertility factors. Initially, the trees were perforated with a traditional auger for oleoresin flow which then were quantified and transferred to amber bottles. The dendrometric data collected were total height, breast height circumference (CAP) and crown diameter. For the soil variable, four soil samples were collected in each tree to compose a single sample for soil chemical analysis. For the data analysis, a mean and standard deviation of the productivity and dendrometric variables were performed, performing a Tukey test at 5% of probability, followed by a multivariate of the main components (PCA) and multivariate distance analysis, in the Statgraphics 18® computer program. The data showed that there was no statistically significant difference when productivity. The PCA generated showed that the variables productivity, calcium and magnesium presented negative scores and above 7 in axis 1 for CAP, evidencing that they were determining variables for this higher dendrometric index. The observed results are 64% explained by the correlation between these variables. These results showed that seasonality is not a determinant factor for oleoresin productivity for the parameters evaluated here, however the correlation of dendrometric and edaphic factors is correlated with the productivity capacity of these trees.