Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais

Detalhes bibliográficos
Autor(a) principal: Pérez, Felipe
Data de Publicação: 2007
Outros Autores: Silva, Gonzalo, Tapia, Maritza, Hepp, Ruperto
Tipo de documento: Artigo
Idioma: spa
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/7611
Resumo: The objective of this work was to determine the annual variation of Peumus boldus Molina insecticidal properties for the control of Sitophilus zeamais Motschulsky, under laboratory conditions. The powder of P. boldus leaves was evaluated, during 12 months, in 0.5, 1, and 2% (w/w) concentrations. Thirty-six treatments, with three replications, were evaluated in a completely randomized experimental design, with a factorial arrangement. Evaluations were made for adult and immature insect percentage mortality and emergence, grain weight loss and seed germination. The greatest mortality was obtained in August and September 2003, in the three concentrations with 100%, and the lowest mortality was registered in May 2003, when only 2% (w/w) reached almost 100% mortality. The lowest adult insect emergence and weight loss were obtained in the same treatments. The effect on immature stages was lower than on adults; and grain germination was affected by P. boldus powders. Insecticidal properties of P. boldus leaves powder are not stable during the year; May is the month with lesser insecticide efficacy; and the powder affects grain germination.
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spelling Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamaisAnnual variation of insecticide properties of Peumus boldus on Sitophilus zeamaisVariación anual de las propiedades insecticidas de Peumus boldus sobre Sitophilus zeamaismaize weevil; stored grains; secondary metabolitesmaize weevil; stored grains; secondary metabolitesgorgojo del maíz; granos almacenados; metabolitos secundariosThe objective of this work was to determine the annual variation of Peumus boldus Molina insecticidal properties for the control of Sitophilus zeamais Motschulsky, under laboratory conditions. The powder of P. boldus leaves was evaluated, during 12 months, in 0.5, 1, and 2% (w/w) concentrations. Thirty-six treatments, with three replications, were evaluated in a completely randomized experimental design, with a factorial arrangement. Evaluations were made for adult and immature insect percentage mortality and emergence, grain weight loss and seed germination. The greatest mortality was obtained in August and September 2003, in the three concentrations with 100%, and the lowest mortality was registered in May 2003, when only 2% (w/w) reached almost 100% mortality. The lowest adult insect emergence and weight loss were obtained in the same treatments. The effect on immature stages was lower than on adults; and grain germination was affected by P. boldus powders. Insecticidal properties of P. boldus leaves powder are not stable during the year; May is the month with lesser insecticide efficacy; and the powder affects grain germination.The objective of this work was to determine the annual variation of Peumus boldus Molina insecticidal properties for the control of Sitophilus zeamais Motschulsky, under laboratory conditions. The powder of P. boldus leaves was evaluated, during 12 months, in 0.5, 1, and 2% (w/w) concentrations. Thirty-six treatments, with three replications, were evaluated in a completely randomized experimental design, with a factorial arrangement. Evaluations were made for adult and immature insect percentage mortality and emergence, grain weight loss and seed germination. The greatest mortality was obtained in August and September 2003, in the three concentrations with 100%, and the lowest mortality was registered in May 2003, when only 2% (w/w) reached almost 100% mortality. The lowest adult insect emergence and weight loss were obtained in the same treatments. The effect on immature stages was lower than on adults; and grain germination was affected by P. boldus powders. Insecticidal properties of P. boldus leaves powder are not stable during the year; May is the month with lesser insecticide efficacy; and the powder affects grain germination.El objetivo del presente trabajo fue determinar la variación anual en las propiedades insecticidas de Peumus boldus Molina, en el control de Sitophilus zeamais Motschulsky, bajo condiciones de laboratorio. El polvo de hojas de P. boldus se evaluó durante 12 meses, en concentraciones de 0,5, 1 y 2% (p/p). Se evaluaron 36 tratamientos con tres repeticiones, en un diseño experimental completamente al azar, con un arreglo factorial. Se determinó el porcentaje de mortalidad y emergencia de insectos adultos e inmaduros y pérdida de peso y germinación del grano. La mayor mortalidad se obtuvo en los meses de agosto y septiembre de 2003, para las tres concentraciones con un 100%, mientras que la menor fue en mayo de 2003, cuando solo la concentración de 2% fue próxima a 100% de mortalidad. La menor emergencia de insectos adultos y pérdida de peso se obtuvieron en los mismos tratamientos. El efecto sobre estados inmaduros fue menor que contra adultos, y la germinación de los granos de maíz fue afectada por los polvos de P. boldus. Las propiedades insecticidas del polvo de hojas de P. boldus no son estables durante el año, Mayo es el mes con la menor eficacia insecticida, y la germinación de las semillas se ve afectada por el polvo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPérez, FelipeSilva, GonzaloTapia, MaritzaHepp, Ruperto2007-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/7611Pesquisa Agropecuaria Brasileira; v.42, n.5, maio 2007; 633-639Pesquisa Agropecuária Brasileira; v.42, n.5, maio 2007; 633-6391678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAspahttps://seer.sct.embrapa.br/index.php/pab/article/view/7611/4530info:eu-repo/semantics/openAccess2014-06-06T16:34:09Zoai:ojs.seer.sct.embrapa.br:article/7611Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-06T16:34:09Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
Variación anual de las propiedades insecticidas de Peumus boldus sobre Sitophilus zeamais
title Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
spellingShingle Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
Pérez, Felipe
maize weevil; stored grains; secondary metabolites
maize weevil; stored grains; secondary metabolites
gorgojo del maíz; granos almacenados; metabolitos secundarios
title_short Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
title_full Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
title_fullStr Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
title_full_unstemmed Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
title_sort Annual variation of insecticide properties of Peumus boldus on Sitophilus zeamais
author Pérez, Felipe
author_facet Pérez, Felipe
Silva, Gonzalo
Tapia, Maritza
Hepp, Ruperto
author_role author
author2 Silva, Gonzalo
Tapia, Maritza
Hepp, Ruperto
author2_role author
author
author
dc.contributor.none.fl_str_mv


dc.contributor.author.fl_str_mv Pérez, Felipe
Silva, Gonzalo
Tapia, Maritza
Hepp, Ruperto
dc.subject.por.fl_str_mv maize weevil; stored grains; secondary metabolites
maize weevil; stored grains; secondary metabolites
gorgojo del maíz; granos almacenados; metabolitos secundarios
topic maize weevil; stored grains; secondary metabolites
maize weevil; stored grains; secondary metabolites
gorgojo del maíz; granos almacenados; metabolitos secundarios
description The objective of this work was to determine the annual variation of Peumus boldus Molina insecticidal properties for the control of Sitophilus zeamais Motschulsky, under laboratory conditions. The powder of P. boldus leaves was evaluated, during 12 months, in 0.5, 1, and 2% (w/w) concentrations. Thirty-six treatments, with three replications, were evaluated in a completely randomized experimental design, with a factorial arrangement. Evaluations were made for adult and immature insect percentage mortality and emergence, grain weight loss and seed germination. The greatest mortality was obtained in August and September 2003, in the three concentrations with 100%, and the lowest mortality was registered in May 2003, when only 2% (w/w) reached almost 100% mortality. The lowest adult insect emergence and weight loss were obtained in the same treatments. The effect on immature stages was lower than on adults; and grain germination was affected by P. boldus powders. Insecticidal properties of P. boldus leaves powder are not stable during the year; May is the month with lesser insecticide efficacy; and the powder affects grain germination.
publishDate 2007
dc.date.none.fl_str_mv 2007-05-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7611
url https://seer.sct.embrapa.br/index.php/pab/article/view/7611
dc.language.iso.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/7611/4530
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.42, n.5, maio 2007; 633-639
Pesquisa Agropecuária Brasileira; v.42, n.5, maio 2007; 633-639
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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