Ação repelente e inseticida do extrato da castanha de caju (Anacardium occidentale) sobre o cupim (Nasutitermes sp.)

Abstract

Termites cause great economic damage to the timber industry and agriculture. Several studies have been carried out in order to enable the use of plant extracts to combat them due to their low impact on the environment and man. Thus, the anti-termite action of the extract obtained from cashew nut against Nasutitermes termites was evaluated. Non-choice and choice tests were performed that evaluated mortality in addition to feeding rate and repellency of ethanolic and hydroalcoholic extracts . In both extracts repellencies were obtained for all concentrations tested, with the highest percentage observed in the extract. ethanol in its highest concentration. The percentage of mortality was higher for the maximum concentration of the ethanol extract . It is concluded that the cashew nut ethanol extract shows potential to combat Nasutitermes arboreal termites .