Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)

The insecticidal properties of boldus (Peumus boldus Molina) powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky) were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence) and temperature (room temperature vs. 3...

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Autores principales:	Bustos-Figueroa,Gabriel, Osses-Ruiz,Francisco, Silva-Aguayo,Gonzalo, Tapia-Vargas,Maritza, Hepp-Gallo,Ruperto, Rodríguez-Maciel,J. Concepción
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2009
Materias:	Boldus maize weevil stored corn
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300007
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spelling	oai:scielo:S0718-583920090003000072018-10-01Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)Bustos-Figueroa,GabrielOsses-Ruiz,FranciscoSilva-Aguayo,GonzaloTapia-Vargas,MaritzaHepp-Gallo,RupertoRodríguez-Maciel,J. Concepción Boldus maize weevil stored corn The insecticidal properties of boldus (Peumus boldus Molina) powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky) were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence) and temperature (room temperature vs. 3 °C) on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w) of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50) for all treatments was < 5 g kg-1, while LC90 was 11 g kg-1. Mixing corn grains with different insecticidal treatments did not affect maize germination. Temperature and aeration did not influence mortality of maize weevil adults. When the boldus powder was mixed with the infested maize 24 h before grinding, the toxicity to the parental adults and emergence of F1 adults with respect to the untreated control was 100 and 0%, respectively. The results were not satisfactory when boldus powder was stored during 30, 60, and 90 d and then mixed with the infested maize. Boldus foliage toxicity was high 24 h after grinding, but decreased significantly over time.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.69 n.3 20092009-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300007en10.4067/S0718-58392009000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Boldus maize weevil stored corn
spellingShingle	Boldus maize weevil stored corn Bustos-Figueroa,Gabriel Osses-Ruiz,Francisco Silva-Aguayo,Gonzalo Tapia-Vargas,Maritza Hepp-Gallo,Ruperto Rodríguez-Maciel,J. Concepción Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
description	The insecticidal properties of boldus (Peumus boldus Molina) powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky) were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence) and temperature (room temperature vs. 3 °C) on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w) of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50) for all treatments was < 5 g kg-1, while LC90 was 11 g kg-1. Mixing corn grains with different insecticidal treatments did not affect maize germination. Temperature and aeration did not influence mortality of maize weevil adults. When the boldus powder was mixed with the infested maize 24 h before grinding, the toxicity to the parental adults and emergence of F1 adults with respect to the untreated control was 100 and 0%, respectively. The results were not satisfactory when boldus powder was stored during 30, 60, and 90 d and then mixed with the infested maize. Boldus foliage toxicity was high 24 h after grinding, but decreased significantly over time.
author	Bustos-Figueroa,Gabriel Osses-Ruiz,Francisco Silva-Aguayo,Gonzalo Tapia-Vargas,Maritza Hepp-Gallo,Ruperto Rodríguez-Maciel,J. Concepción
author_facet	Bustos-Figueroa,Gabriel Osses-Ruiz,Francisco Silva-Aguayo,Gonzalo Tapia-Vargas,Maritza Hepp-Gallo,Ruperto Rodríguez-Maciel,J. Concepción
author_sort	Bustos-Figueroa,Gabriel
title	Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
title_short	Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
title_full	Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
title_fullStr	Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
title_full_unstemmed	Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)
title_sort	insecticidal properties of peumus boldus molina powder used alone and mixed with lime against sitophilus zeamais motschulsky (coleopter: curculionidae)
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300007
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Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae)

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