Anais da Sociedade Entomológica do Brasil (2000) 29, 799-808

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Antonia R. Roel, José D. Vendramim, Rosa T.S. Frighetto and Nelson Frighetto (2000)
Atividade Tóxica de Extratos Orgânicos de Trichilia pallida Swartz (Meliaceae) Sobre Spodoptera frugiperda (J. E. Smith)
[Toxic activity of organic extracts from Trichilia pallida Swartz (Meliaceae) against Spodoptera frugiperda (J. E. Smith)]
Anais da Sociedade Entomológica do Brasil 29 (4), 799-808
Abstract: The objective of this research was to evaluate the toxic activity of different concentrations (weight/volume) of organic extracts (non-aqueous) of leaves and twigs of Trichilia pallida Swartz on Spodoptera frugiperda (J. E. Smith) under laboratory conditions. Pieces of corn leaves were dipped in acetone solutions of T. pallida extracts at concentrations ranging from 0.008 to 1%. Larval mortality of S. frugiperda was evaluated during 10 days and acetone extracts of leaves and twigs and methanol extracts of twigs showed greater activity than methanol extract of leaves. Crude acetone extract was partitioned with hexane and ethyl acetate and evaluated by using the same methodology. Ethyl acetate fraction was more effective than hexane. Comparing the four solvents, the highest toxic activity of the extracts was obtained using acetone, followed by methanol, ethyl acetate and hexane.
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(original language: Portuguese)
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Database assignments for author(s): José Djair Vendramim

Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Spodoptera frugiperda