Larvicidal effect of eucalyptus essential oils (E. globulus, E. radiata and E. citriodora) on L3 and L4 larvae of the tomato leaf miner Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) Chougar Safia1,*, Medjdoub-Bensaad Ferroudja1, Guermah Dyhia1 1Laboratoire de production, sauvegarde des especes menacees et des recoltes. Influence des variations climatiques. Departement de Biologie. Faculte des Sciences Biologiques et des Sciences Agronomiques. Universite Mouloud Mammeri deTizi-Ouzou. 15000Algerie *Corresponding Author: Ferroudja Medjdoub-Bensaad, Laboratoire de production, sauvegarde des especes menacees et des recoltes. Influence des variations climatiques. Departement de Biologie. Faculte des Sciences Biologiques et des Sciences Agronomiques. Universite Mouloud Mammeri deTizi-Ouzou. 15000Algerie e-mail: medidoubferroudia@yahoo.fr
Online published on 6 July, 2022. Abstract The abuse of chemical substances used as pesticides harms the environment affected animal and human health. An alternative control proposal using three different essential oils of Eucalyptus tested on the larvae of the last stages of the tomato leaf miner Tuta absoluta, whose damage to Solanaceae crops is still relevant. Essential oils are extracted from the leaves of Eucalyptus globulus, E. radiata and E. citriodora and are tested by inhalation at different doses on L3 and L4 larvae of T. absoluta. The average toxicity of these three essential oils increases proportionally with the doses as well as the duration of exposure. The values obtained for the LD50 after 24 hours of exposure enabled us to conclude that the three oils tested had a larvicidal effect against the third and fourth stage larvae of this pest. Top Keywords Tuta absoluta, Larvae, Eucalyptus, Essential oils, Toxicity. Top |