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Investigación Agraria

versión On-line ISSN 2305-0683

Resumen

RUBEN, Machota Junior¹ et al. Effect of insecticides on Anastrepha fraterculus (Wied.) (Diptera: Tephritidae) in 'Italy' table grape under plastic cover. Investig. Agrar. [online]. 2013, vol.15, n.2, pp.113-120. ISSN 2305-0683.

The South American fruit fly Anastrepha fraterculus (Wied.) is the main insect pest who causes damage on table grape (Vitis vinifera L.) in the South Region of Brazil. Plant extracts with insecticidal properties are an alternative to manage this specie on the culture, however, there are few information about your efficacy. On this study, we evaluated the effect of a commercial formulation based on rotenone and neem over A. fraterculus adults and larvae in the laboratory and field, compared with fenthion insecticide and a control (distilled water). In the laboratory, the commercial formulation based rotenone neem was similar to fenthion when A. fraterculus adults exposed via direct contact and ingestion 72 hours after treatment. However, this insecticide did not show effect (20% mortality) on A. fraterculus larvae inside ‘Italia’ grape berries when compared with fenthion insecticide (100% mortality). In a commercial vineyard, commercial formulation based on rotenone and neem provided mortality around 40%, lower than fenthion (100% mortality). Both insecticides did not prevent the A. fraterculus oviposition on berries. We conclude that commercial formulation based on rotenone and neem insecticide is efficient on adults of A. fraterculus but not provide larval mortality inside "Italia" table grape.

Palabras clave : Anastrepha fraterculus; fenthion; fruit flies,; rotenone; table grapes.

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