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Memorias de investigación
Artículos en revistas:
Long-term foliar persistence and efficacy of spinosad against beet armyworm under greenhouse conditions.
Año:2012
Áreas de investigación
  • Producción vegetal
Datos
Descripción
BACKGROUND: The immediate lethality caused by spinosad has been widely studied on Spodoptera exigua (H ¿ ubner). However, long-term effects can also provide valuable information on insecticide toxic action. Here, the persistence of spinosad on Capsicum annuum L. foliage and the lethal and sublethal effects of greenhouse-aged foliar residues of this insecticide on third instars of S. exigua are reported. RESULTS: Foliage was collected at 0, 3, 5, 10, 20, 30, 40 and 50 days after application, and spinosad residues were measured. Residues decreased over time according to first-order kinetics. The average rate constant and half-life of disappearance were 4.44×10?3 and156 daysand5.80×10?3 and120 days for60and120 mg L?1 respectively. Larval mortalitygradually decreased, corresponding to the residues, but was still appreciable (35 and 65% for 60 and 120 mg L?1 respectively) when the larvae were fed with foliage collected 50 days after treatment. Subsequently, pupal development was reduced and varied between 20 and 60% and between 21 and 41% for 60 and 120 mg L?1, respectively, in all ages of leaf residues that were bioassayed. At all time points, the consumption rate by the larvae was reduced between 62 and 84% for both concentrations that were bioassayed. CONCLUSION: It is concluded that, under the present greenhouse conditions, the degradation of spinosad was slower than that reported by other authors in the field, and, because of that, its residues could cause lethal and sublethal effects to S. exigua larvae.
Internacional
Si
JCR del ISI
Si
Título de la revista
Pest Management Science
ISSN
1526-498X
Factor de impacto JCR
2,251
Información de impacto
Volumen
68
DOI
10.1002/ps.3250
Número de revista
6
Desde la página
914
Hasta la página
921
Mes
DICIEMBRE
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Erika Santis
  • Autor: Luis Hernández
  • Autor: Ana Martínez
  • Autor: Jesús Campos
  • Autor: José Figueroa
  • Autor: Philippe Lobit
  • Autor: Juan Chavarrieta
  • Autor: Elisa Viñuela Sandoval (UPM)
  • Autor: Guy Smagghe
  • Autor: Samuel Pineda
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Manejo Integrado de Plagas
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