EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR

ABSTRACT The high-pressure infestation of Helicoverpa zea (L.) in maize (Zea mays L.) in Ecuador led to evaluate the antifeedant effect and laboratory mortality of third instar larvae treated with water extracts from leaves of Schinus molle (L.) and Artemisia absinthium (L.) at 100 and 50% of the ma...

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Autores principales:	Guevara,Diego J., Araya,Jaime E., Huerta,Amanda, Chiffelle,Ítalo
Lenguaje:	English
Publicado:	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias 2018
Materias:	Antifeeding effect Helicoverpa zea insecticidal effect plant extracts corn earworm Zea mays
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902018000300216
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spelling	oai:scielo:S0719-389020180003002162019-04-03EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADORGuevara,Diego J.Araya,Jaime E.Huerta,AmandaChiffelle,Ítalo Antifeeding effect Helicoverpa zea insecticidal effect plant extracts corn earworm Zea mays ABSTRACT The high-pressure infestation of Helicoverpa zea (L.) in maize (Zea mays L.) in Ecuador led to evaluate the antifeedant effect and laboratory mortality of third instar larvae treated with water extracts from leaves of Schinus molle (L.) and Artemisia absinthium (L.) at 100 and 50% of the maximum concentrations obtained, which were applied alone and mixed with Bacillus thuringiensis (Berliner) var. kurstaki (Btk). A field trial was also conducted. In the laboratory, the S. molle extract had an intermediate (45 to 49%) antifeeding effect, while the A. absinthium extract had no effect. At 15 days after application (DAA), the extracts alone or in mixture with Btk caused low mortality (S. molle: 20 to 28%; A. absinthium: 24 to 40%; and in mixture with Btk 33 and 28%, respectively). On that evaluation, the combined application of S. molle and A. absinthium extracts with Btk did not increase the larvicidal effect of the bacteria. The water extract from S. molle applied alone or mixed with Btk significantly decreased (P < 0.05) the number of larvae at harvest, but the damage caused by those surviving larvae did not differ from the untreated control. The insecticidal effects obtained represent new alternatives for the control of Helicoverpa zea in maize.info:eu-repo/semantics/openAccessUniversidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias VeterinariasChilean journal of agricultural & animal sciences v.34 n.3 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902018000300216en10.4067/S0719-38902018005000505
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Antifeeding effect Helicoverpa zea insecticidal effect plant extracts corn earworm Zea mays
spellingShingle	Antifeeding effect Helicoverpa zea insecticidal effect plant extracts corn earworm Zea mays Guevara,Diego J. Araya,Jaime E. Huerta,Amanda Chiffelle,Ítalo EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
description	ABSTRACT The high-pressure infestation of Helicoverpa zea (L.) in maize (Zea mays L.) in Ecuador led to evaluate the antifeedant effect and laboratory mortality of third instar larvae treated with water extracts from leaves of Schinus molle (L.) and Artemisia absinthium (L.) at 100 and 50% of the maximum concentrations obtained, which were applied alone and mixed with Bacillus thuringiensis (Berliner) var. kurstaki (Btk). A field trial was also conducted. In the laboratory, the S. molle extract had an intermediate (45 to 49%) antifeeding effect, while the A. absinthium extract had no effect. At 15 days after application (DAA), the extracts alone or in mixture with Btk caused low mortality (S. molle: 20 to 28%; A. absinthium: 24 to 40%; and in mixture with Btk 33 and 28%, respectively). On that evaluation, the combined application of S. molle and A. absinthium extracts with Btk did not increase the larvicidal effect of the bacteria. The water extract from S. molle applied alone or mixed with Btk significantly decreased (P < 0.05) the number of larvae at harvest, but the damage caused by those surviving larvae did not differ from the untreated control. The insecticidal effects obtained represent new alternatives for the control of Helicoverpa zea in maize.
author	Guevara,Diego J. Araya,Jaime E. Huerta,Amanda Chiffelle,Ítalo
author_facet	Guevara,Diego J. Araya,Jaime E. Huerta,Amanda Chiffelle,Ítalo
author_sort	Guevara,Diego J.
title	EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
title_short	EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
title_full	EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
title_fullStr	EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
title_full_unstemmed	EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR
title_sort	extracts of schinus molle and artemisia absinthium against helicoverpa zea on fresh ear corn in ecuador
publisher	Universidad de Concepción. Facultad de Agronomía, Facultad de Ingeniería Agricola y Facultad de Ciencias Veterinarias
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-38902018000300216
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EXTRACTS OF Schinus molle AND Artemisia absinthium AGAINST Helicoverpa zea ON FRESH EAR CORN IN ECUADOR

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