SciELO - Scientific Electronic Library Online

 
vol.65 número4Indicadores de Rentabilidad y Eficiencia Económica de la Producción de Manzanas cv. Gala en la Región del Maule, ChileFluctuación Poblacional, Capacidad Depredadora y Longevidad de Nabis punctipennis Blanchard (Hemiptera: Nabidae) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Agricultura Técnica

versión impresa ISSN 0365-2807

Resumen

VARGAS M, Robinson  y  UBILLO, Alejandrina. Susceptibility of Frankliniella occidentalis (Thysanoptera: Thripidae) to Insecticides in the Central Region of Chile. Agric. Téc. [online]. 2005, vol.65, n.4, pp.437-441. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072005000400009.

Susceptibility of the California thrips, Frankliniella occidentalis (Pergande) to formetanate (Dicarzol 500 SP), methamidophos (Tamaron 600 SL), dimethoate (Perfekthion), and spinosad (Success 48) was evaluated using serial concentrations of insecticides sprayed on bean leaves with a Potter Tower. In the bioassays, adult females collected in three localities of the Vth Region (Ocoa 32º55’ S lat and 71º05’ W long, 365 m.o.s.l.; Auco 32º52’ S lat and 70º40’ W long., 762 m.o.s.l., and Vichiculén 32º52’ S lat and 70º57’ W long, 279 m.o.s.l.) were used. The results were submitted to a Probit analysis, and the resistance factors (FR) were calculated with lethal concentrations 50 (LC50) of the most sensible strain to the four insecticides. The FRs obtained for spinosad were: 1, 1.3 and 1.5; to dimethoate 1, 1.6 and 7.4; to metamidophos 1, 1.5 and 4.2 and, to formetanate 1, 2 and 2, in Ocoa, Auco and Vichiculén, respectively. The Vichiculén strain had lowest susceptibility to all insecticides tested. For all strains, the response to spinosad showed the highest susceptibility. Recommendations to develop strategies to manage resistance of F. occidentalis to insecticides are discussed.

Palabras clave : California thrips; resistance; methamidophos; dimethoate; formetanate; spinosad.

        · resumen en Español     · texto en Español

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons