SciELO - Scientific Electronic Library Online

 
vol.86 número1Efecto de la conservación de residuos de cosecha de la caña de azúcar en la temperatura de un suelo Argiudol típico de la Llanura Chacopampeana sub húmeda - húmeda (Tucumán - Argentina)Caracterización biológica de aislamientos del virus de la tristeza de los cítricos de limoneros en Tucumán, Argentina índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Revista industrial y agrícola de Tucumán

versão On-line ISSN 1851-3018

Resumo

MURUA, M. Gabriela et al. Spatial and temporal distribution of Spodoptera frugiperda (Smith) (Lep.: Noctuidae) larval populations on different host plants in northern Argentina provinces. Rev. ind. agric. Tucumán [online]. 2009, vol.86, n.1, pp.25-36. ISSN 1851-3018.

In order to study the spatial and temporal distribution of fall armyworm Spodoptera frugiperda larval populations on different host plants, systematic samplings were made from 2004 to 2007 in different crop associations in the provinces of Tucumán, Salta and Santiago del Estero. A zone where more than two adjacent crops coexisted simultaneously (in time and space) was considered a crop association. Sampled crops were corn, sorghum, alfalfa, sugarcane, soybean, wheat, safflower, chickpea and weeds. Five one-square-meter spots were randomly selected in each plantation and plants were checked for egg masses and/or larvae, which were collected. 3620 larvae were found, most of them being collected in all provinces during summer months in the three evaluated crop seasons. Larval presence was related to summer crops (corn and sorghum) in all provinces. The highest larval number was obtained in corn (2894), independently of the other crops in the association. The other important crops infected with larvae were: sorghum (272), alfalfa (125), and weeds (282). Considering the number of larvae collected, soybean, wheat, and sugar cane, crops that were present in almost all the associations, are not preferential hosts for this species.

Palavras-chave : Fall armyworm; Natural refuges; Transgenic corn; Resistance; Crop associations.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons