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Biological activity of two neem (Azadirachta indica A. Juss., Meliaceae)products on Hypsipyla grandella (Lepidoptera: Pyralidae)larvae

Tipo de material: TextoTextoSeries ; Crop Protection, 21(2), p.107-112, 2002Trabajos contenidos:
  • Mancebo, F
  • Hilje, L
  • Mora, J.A
  • Salazar, R
Tema(s): Recursos en línea: Resumen: Biological activity of two neem products (Azatin and Nim 80)on mahogany shootborer (Hypsipyla grandella)larvae was studied. A randomized complete block design,with four replications,was used. H. grandella third instar larvae were exposed for 24 h to Cedrela odorata leaf discs dipped in several treatment dissolutions of each formulated product (0.1,0.32,1.0,3.20,and 10 per cent); afterwards,each larva was transferred to a flask containing artificial diet,where it was allowed to complete its development. Variables measured included food consumption (foliar area eaten in 24 h),mortality, and developmental effects (developmental time for each larval instar and the pupa,and pupal weight). No one of the substances present in both products showed antifeedant activity on H. grandella larvae. Instead,Azatin caused quick direct toxicity and Nim 80 acted as a growth disruptant,especially at the three highest concentrations (1.0,3.20,and 10
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Biological activity of two neem products (Azatin and Nim 80)on mahogany shootborer (Hypsipyla grandella)larvae was studied. A randomized complete block design,with four replications,was used. H. grandella third instar larvae were exposed for 24 h to Cedrela odorata leaf discs dipped in several treatment dissolutions of each formulated product (0.1,0.32,1.0,3.20,and 10 per cent); afterwards,each larva was transferred to a flask containing artificial diet,where it was allowed to complete its development. Variables measured included food consumption (foliar area eaten in 24 h),mortality, and developmental effects (developmental time for each larval instar and the pupa,and pupal weight). No one of the substances present in both products showed antifeedant activity on H. grandella larvae. Instead,Azatin caused quick direct toxicity and Nim 80 acted as a growth disruptant,especially at the three highest concentrations (1.0,3.20,and 10

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