Eucalyptus globulus (Mirtaceae) essential oil: efficacy against Aphis gossypii (Hemiptera: Aphididae), an agricultural pest.

MAREGGIANI GRACIELA; RUSSO SERAFINA; ROCCA MARGARITA

REVISTA LATINOAMERICANA DE QUIMICA

Laboratorios MIXIM

Lugar: Naucalpan de Juárez; Año: 2008 vol. 36 p. 34 - 38

0370-5943

The insecticidal activity of Eucalyptus globulus (Mirtaceae) essential oil obtained in FAUBA laboratory was tested against Aphis gossypii (Hemiptera, Aphididae) adults. The screening bioassay showed very high insecticidal activity (55-100%) at 3000, 6000, 12000 and 18000 ppm at the first hour, increasing up to 84-100% at 24 hours. Based on these results, a dose response test was carried out. LC50 (lethal concentration necessary to kill 50% of the population) values of 2000 ppm at 4 and 6 hours were obtained. The activity could be attributed to the secondary metabolite 1, 8 cineole, the main component of the essential oil tested.