Dendrometric, edaphic and oleorresin relationships from Copaifera multijuga Hayne, in the municipality of Manicore-AM

ABSTRACT

The oleoresin from Copaifera multijuga Hayne has great socioeconomic importance for the Amazon region. The objective of this research was to determine how the dendrochronological, dendrometric, edaphic and oleoresin production variables of C. multijuga interact with each other and with the oil production itself. Fourteen individuals were sampled for oleoresin extraction, where dendrometric information was collected and samples were taken from the soil around each tree. A descriptive analysis was performed of the observed variables, applying a principal component analysis of the soil variables, then a Pearson correlation analysis of the soil variables with the dendrometric and oil production variables was performed. A new principal component analysis was performed, including selected soil variables, dendrometric and oleoresin production. The results indicated that the 14 trees analyzed produced oil, with an average production of 226.79 ml ± 126.91. The amount of oil was shown to be negatively correlated with the content of manganese (Mn) in the soil, despite the concentration of Mn not being beyond the tolerable limits for the plants, not representing a risk of toxicity. It should be noted that, in general, a plasticity of copaibeiras was observed to occur in the different concentrations of the analyzed variables, which suggests that this species has adaptability to different soil conditions, although soil attributes showed little influence on oleoresin production.

Keywords
Copaíba; PFNM; Soil; Multivariate