Controle alternativo com óleos essenciais em sementes de aroeira-do-sertão (Myracrodruon urundeuva Fr.. Allemão) no controle de fungos.

Abstract

The Myracrodruon urundeuva Fr. Allemão, is a species of the Anacardiaceae family, limited to South America natural distribution. Exists a great need for development directed to alternative seed treatment methods. Among these methods are the alternative treatments such as essential oils. The objective of this study was to evaluate the effectiveness of essential oils in the management of fungal and physiological quality of seeds of M. urundeuva. The experiment was conducted at the Laboratory of Phytopathology, Department of Plant and Environmental Sciences, UFPB, Campus II. The experimental design was completely randomized. The sanity test consisted of nine treatments, with concentrations 1; 2.5; 5 and 7.5% for oils of Rosmarinus officinalis and Dianthus caryophyllus, distributed in five replicates of twenty seeds each. For the germination test, the same treatments as health test, which consisted of four repetitions of twenty-five seeds each were used. The fruits of mastic were collected in an array in the municipality of Juarez Távora - PB. It was found that the sanity check of Rosmarinus officinalis oil and 7.5% of Dianthus caryophyllus 1; 2.5; 5 and 7.5% were effective in reducing Aspergillus niger. It was found that the incidence of Fusarium sp. Was reduced with Rosmarinus officinalis and Dianthus caryophyllus oils at all concentrations used. Found in the germination test treatments with oils of R. officinalis and D. caryophyllus did not differ between the variables has no effect on germination. D. caryophyllus oil at all concentrations were effective in reducing Aspergillus niger and Fusarium sp. The treatment with R. officinalis oil were effective in reducing Fusarium sp. Which in turn reduced the incidence of Aspergillus niger at the concentration of 7.5% and did not affect the germination.