Controle alternativo de Acanthoscelides obtectus em grãos de feijão

Abstract

This study aimed to evaluate the insecticide and repellent essential oils effect of Eucalyptus dunnii, Eucalyptus viminalis and Eucalipto benthamii on Acanthoscelides obtectus. To assess the insecticidal effect was tested doses of 0, 3, 5, 10, 20, 30, 50 and 100 μL of essential oil. The number of dead insects was counted after 24 and 48 h. Were used arenas To verify the essential oil repellent effect. As the doses tested essential oil were 0, 5, 10, 20, 30, 50 and 100 μl. The evaluations were performed 24h after the inoculation of insects, counting the number of insects per container. For doses above 20μL the essential oil of E. dunnii demonstrated insecticidal effect as well as for the species E. viminalis and E. benthamii demonstrating insecticidal effect up to 30μL doses. For repellency test the species E. dunnii and E. viminalis showed repellent effect with average IP- 0.58 and -0.61 respectively. While the oil of E. benthamii presented attractive effect for insects with IP average 0.11.