title: Herbicidal activity of Peumus boldus and Drimys winterii essential oils from Chile.
abstract: The essential oil composition of Peumus boldus and Drimys winterii was analyzed by means of capillary GC-FID and GC-MS. More than 96% of the total oil components (43 and 54 compounds, respectively) were identified, with ascaridole (51.17 ± 9.51), p-cymene (16.31 ± 2.52) and 1,8-cineole (14.45 ± 2.99) as the main compounds in P. boldus and g-eudesmol (21.65 ± 0.41), followed of elemol (12.03 ± 0.34) and terpinen-4-ol (11.56 ± 1.06) in D. winterii. The herbicidal activity was tested against Amaranthus hybridus and Portulaca oleracea. P. boldus essential oil was the most phytotoxic against both weeds, inhibiting seed germination and seedling growth at all concentrations assayed (0.125-1 µL/mL). D. winterii essential oil did not show any effect on A. hybridus germination and only affected P. oleracea germination at the highest concentration. The results suggest the possible use of the essential oil from P. boldus as a natural herbicide.
authors.affiliation: Instituto Agroforestal Mediterráneo, Universidad Politécnica de Valencia, Camino de Vera s/n, C.P. 46022 Valencia, Spain.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Verdeguer
authors.forename: David
authors.initials: D
authors.lastname: García-Rellán
authors.forename: Herminio
authors.initials: H
authors.lastname: Boira
authors.forename: Eduardo
authors.initials: E
authors.lastname: Pérez
authors.forename: Sandra
authors.initials: S
authors.lastname: Gandolfo
authors.forename: María Amparo
authors.initials: MA
authors.lastname: Blázquez
mesh_terms: D002677:Chile; D002849:Chromatography, Gas; D032424:Drimys / Q000737:chemistry*; D006540:Herbicides / Q000494:pharmacology*; D013058:Mass Spectrometry; D009822:Oils, Volatile / Q000302:isolation & purification / Q000494:pharmacology*; D031611:Peumus / Q000737:chemistry*
chemical_list: D006540:Herbicides; D009822:Oils, Volatile