Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst

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 we...

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Autores principales:	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
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2012
Materias:	Botanical insecticides stored grains maize weevil red flour beetle
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300007
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spelling	oai:scielo:S0718-583920120003000072018-10-01Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum HerbstOrtiz U,MargaritaSilva A,GonzaloTapia V,MaritzaRodriguez M,J. ConcepciónLagunes T,AngelSantillán-Ortega,CandelarioRobles-Bermúdez,AgustínAguilar-Medel,Sotero Botanical insecticides stored grains maize weevil red flour beetle 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.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.72 n.3 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300007en10.4067/S0718-58392012000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Botanical insecticides stored grains maize weevil red flour beetle
spellingShingle	Botanical insecticides stored grains maize weevil red flour beetle 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 Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
description	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.
author	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
author_facet	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
author_sort	Ortiz U,Margarita
title	Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
title_short	Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
title_full	Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
title_fullStr	Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
title_full_unstemmed	Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst
title_sort	toxicity of boldo peumus boldus molina for sitophilus zeamais motschulsky and tribolium castaneum herbst
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000300007
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Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst

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