Atividade inseticida de óleos essenciais de Pelargonium graveolens l'Herit e Lippia alba (Mill) N. E. Brown sobre Spodoptera frugiperda (J. E. Smith)

• Autor(a) principal: Niculau,Edenilson dos S.
• Data de Publicação: 2013
• Outros Autores: Alves,Péricles B., Nogueira,Paulo Cesar de L., Moraes,Valéria Regina de S., Matos,Andréia P., Bernardo,Antonio R., Volante,Ana C., Fernandes,João B., Silva,Maria F. G. F. da, Corrêa,Arlene G., Blank,Arie F., Silva,Anderson de C., Ribeiro,Leandro do P.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Química Nova (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900020
• topic: Lippia alba; Pelargonium graveolens; Spodoptera frugiperda

Insecticidal activity of essential oils of Pelargonium graveolens, Lippia alba and compounds geraniol, linalool, 1,8-cineole, limonene, carvone, citral and Azamax® were evaluated against Spodoptera frugiperda. Topical application assay showed essential oil of P. graveolens has acute toxicity against Spodoptera frugiperda larvae (third instar) with LD50 1.13 µg/mg per insect and LD90 2.56 µg/mg per insect. Three essential oils of L. alba also exhibited insecticidal activity with LD50 ranging from 1.20 to 1.56 µg/mg per insect and LD90 from 2.60 to 3.75 µg/mg per insect. Geraniol, linalool, carvone and citral caused significant mortality of 30, 90, 84 and 64% respectively, compared to negative control. The bioinsecticide, Azamax®, caused lower mortality than the compounds of the essential oils.