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Abstract
Alfalfa is a perennial crop and is one of the most relevant forage resources for cattle in the Argentine Pampas, with aphids (Hemiptera Aphididae), one of the main pest insects in alfalfa, being frequently attacked by a rich fauna of aphidiinae parasitoids (Hymenoptera: Braconidae). The aim of this study was to identify the possible field characteristics that influence the parasitism rates of aphids in alfalfa, in order to recommend simple methods of [ver mas...]
dc.contributor.authorZumoffen, Leticia
dc.contributor.authorSalto, Cesar Eduardo
dc.contributor.authorSalvo, Silvia Adriana
dc.date.accessioned2019-01-17T14:51:01Z
dc.date.available2019-01-17T14:51:01Z
dc.date.issued2012-09-12
dc.identifier.issn0167-8809
dc.identifier.otherhttps://doi.org/10.1016/j.agee.2012.06.019
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0167880912002459
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4285
dc.description.abstractAlfalfa is a perennial crop and is one of the most relevant forage resources for cattle in the Argentine Pampas, with aphids (Hemiptera Aphididae), one of the main pest insects in alfalfa, being frequently attacked by a rich fauna of aphidiinae parasitoids (Hymenoptera: Braconidae). The aim of this study was to identify the possible field characteristics that influence the parasitism rates of aphids in alfalfa, in order to recommend simple methods of environmental manipulation to enhance the action of parasitoids. The abundance of aphids and their parasitism were estimated fortnightly, over a period of seven months in fourteen alfalfa fields located near the city of Rafaela, Santa Fe, through the collection of stem cuttings. The influence of field size, age of crop, and percentage of borders with spontaneous vegetation, on aphid abundance and their parasitism rates, were assessed through general lineal models with repeated measures. Greater aphid populations were observed in fields with a low percentage of natural borders, whereas the impact by parasitoids was higher in older crops and in those fields with a high percentage of natural borders. The relative importance of the characteristics of fields on parasitism of aphids is discussed, bearing in mind that conservation is the strategy of biological control recommended for developed countries given its low cost and potential sustainability.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceAgriculture, Ecosystems & Environment 159 : 49-54 (September 2012)es_AR
dc.subjectMedicago Sativaes_AR
dc.subjectPlantas Perenneses_AR
dc.subjectPerennialseng
dc.subjectAphidoideaes_AR
dc.subjectParasitismoes_AR
dc.subjectParasitismeng
dc.subjectControl Biológicoes_AR
dc.subjectBiological Controleng
dc.subject.otherAlfalfaes_AR
dc.subject.otherCultivos Perenneses_AR
dc.subject.otherAfidoses_AR
dc.subject.otherRegión Pampeanaes_AR
dc.titlePreliminary study on parasitism of aphids (Hemiptera: Aphididae) in relation to characteristics of alfalfa fields (Medicago sativa L.) in the Argentine Pampases_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Rafaelaes_AR
dc.description.filFil: Zumoffen, Leticia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Área Investigación Agronomía. Protección Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Salto, Cesar Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Área Investigación Agronomía. Protección Vegetal; Argentina; Argentinaes_AR
dc.description.filFil: Salvo, Silvia Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentinaes_AR
dc.subtypecientifico


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