Essential oil of Peumus boldus Molina against the nematode Haemonchus contortus (L3) and three stored cereal insect pests

Alternative methods of control against different parasites affecting livestock and agriculture are currently being sought. The essential oil Peumus boldus Molina has anthelmintic insecticidal activity the nematode Haemonchus contortus stored cereal insect pests. present study aimed to assess in vitro P. H. (L3) unsheathed Sitophilus zeamais, Tribolium castaneum, Plodia interpunctella. was obtained from leaves its principal compounds identified by phytochemical analysis. Essential tested at concentrations 0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 2.0 mg mL-1 on L3 larvae 0, 35, 70, 100, 125, 150, 175 200 μL L-1 air adult insects. main constituents detected were 1,8-cineole, terpineol, terpinene-4-ol, γ-terpinene, p-cimene, methyl eugenol, safrole, (E)-germacrene D, β-tujene, ascaridol. insects exposed for 72 h. In a bioassay with larvae, treatment showed highest toxicity 99.2% mortality. Regarding activity, S. zeamais most susceptible species mortality 90% air. suggests that potential activity.