| Registro completo |
| Provedor de dados: |
Chilean J. Agric. Res.
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| País: |
Chile
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| Título: |
Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
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| Autores: |
Ortiz U,Margarita
Silva A,Gonzalo
Tapia V,Maritza
Rodriguez M,J. Concepción
Lagunes T,Angel
Santillán-Ortega,Candelario
Robles-Bermúdez,Agustín
Aguilar-Medel,Sotero
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| Data: |
2012-09-01
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| Ano: |
2012
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| Palavras-chave: |
Botanical insecticides
Stored grains
Maize weevil
Red flour beetle
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| Resumo: |
The maize weevil (Sitophilus zeamais Motschulsky) and the red flour beetle (Tribolium castaneum Herbst) are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina) powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum were evaluated under laboratory conditions. The evaluated variables were mortality, emergence of adult insects (F1), and grain weight loss. The experimental design was completely randomized. The mortality in S. zeamais was 100% even at the lowest powder concentration (0.5% w/w), whereas emergence of F1 adult insects was 0% and grain weight loss was < 0.08%. For T. castaneum, only 8 and 16% w/w powder concentrations reached 100% mortality. The liquid ethanolic and hexanic extracts caused 100% mortality of S. zeamais, whereas only the ethanolic extract reached this value for T. castaneum. Therefore, the powder and the evaluated extracts of P. boldus were toxic for S. zeamais and T. castaneum and are promising against these and other stored-grain pests.
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| Tipo: |
Journal article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300007
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| Editor: |
Instituto de Investigaciones Agropecuarias, INIA
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| Formato: |
text/html
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| Fonte: |
Chilean journal of agricultural research v.72 n.3 2012
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