Bioatividade do óleo essencial de Callistemon speciosus sobre Anticarsia gemmatalis e Spodoptera frugiperda

Abstract

Anticarsia gemmatalis and Spodoptera frugiperda cause damage to soybean and maize crops, respectively, and are mainly controlled using pesticides. As an alternative control, plant essential oils stand out, so the present study aimed to evaluate the bioactivity of the Callistemon speciosus essential oil on the caterpillars in question, as well as its phytochemical characterization. Mortality rates were evaluated by bioassays using an artificial diet which was offered for 3rd-instar caterpillars on nine different treatments. Evaluations were performed at 24, 48 and 72 hours. The compound 1.8-cineol was identified as the major compound of C. speciosus and its insecticidal activity on A. gemmatalis and S. frugiperda was ascertained.(sic)