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Toxicological study of Wedelia trilobata (Asteraceae) extracts as alternative control strategies for Plutella xylostella (Lepidoptera: Plutellidae).
Junhirun, P; Pluempanupat, W; Bullangpoti, V.
Afiliación
  • Junhirun P; Biopesticide Toxicology Speciality Research Unit, Zoology Department, Faculty of Science, Kasetsart University, Phahonyothin Rd., Bangkok 10900, Thailand.
Commun Agric Appl Biol Sci ; 77(4): 721-5, 2012.
Article en En | MEDLINE | ID: mdl-23885442
The Diamondback moth (Plutella xylostella (L)) is an economically important pest in Thailand and the indiscriminant use of chemical pesticides against this pest has been responsible for environmental hazards. Present research, therefore, is trying to develop alternative strategies by using plant based-products for the control of this pest. Wedelia trilobata (L) Hitchc extracts prepared in hexane, dichloroethane, ethyl acetate and ethanol were used initially against the second instars of P. xylostella by topical application to determine the dose dependent toxicity. The highest yield of the extracts was obtained with EtOH extract followed by hexane, EtOAc and dichloroethane. However, the EtOAc extract exhibited the highest toxicity (24h-LC50 = 442.8 ppm) that became more prominent after 48 h (LC50 = 376.71 ppm). This suggests there was an increase in toxicity with the duration of exposure to the treatment. With the exception of the hexane extract, all other treatments were significantly correlated, which suggests that W. trolobata contains a varied profile of anti-insect allelochemicals that can be exploited in any integrated pest management strategy. The identification of the active ingredients is in progress.
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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Extractos Vegetales / Wedelia / Insecticidas / Mariposas Nocturnas Límite: Animals Idioma: En Revista: Commun Agric Appl Biol Sci Asunto de la revista: SAUDE AMBIENTAL Año: 2012 Tipo del documento: Article País de afiliación: Tailandia Pais de publicación: Bélgica
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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Extractos Vegetales / Wedelia / Insecticidas / Mariposas Nocturnas Límite: Animals Idioma: En Revista: Commun Agric Appl Biol Sci Asunto de la revista: SAUDE AMBIENTAL Año: 2012 Tipo del documento: Article País de afiliación: Tailandia Pais de publicación: Bélgica