Ramos-Alejandro, Sara E.

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    Identificación de la mosca frutera del género Anastrepha (Diptera: Tephritidae) y la evaluación de un método de control en tres cultivares de melocotón en Adjuntas, P.R.
    (2008) Ramos-Alejandro, Sara E.; Librán-Salas, María del C.; College of Agricultural Sciences; González, Ángel; Morales Payán, J. Pablo; Department of Crops and Agro-Environmental Sciences; Acosta, Jaime
    Low-chill peach cultivars (Flordaprince, Tropic Beauty, Flordaglo) were evaluated in two sites in Adjuntas, P.R. Fruit yield and quality were severely reduced by tephritid fruit flies, which had not been previously reported in peaches in Puerto Rico. The objectives of this study were to identify the tephridid fruit fly species present in peach fruits and to evaluate a control method for the species present. Plastic McPhail traps were used to sample adult fruit fly in peach sites, and in guava, coffee and citrus species located close to the peach sites. To determine the tephritid species attacking fruits, mature peaches were harvested randomly and kept in the laboratory until adult flies emerged. No fruit flies were recovered from traps in the peach sites. Two fly species, Anastrepha obliqua (Mcquart) and A. suspensa (Loew), were captured in the other traps. However, A. suspensa was the only species recovered from peach fruits. To evaluate fruit fly control, three pairs of trees per cultivar (similar yield) were chosen in the two peach sites. One of the two sites was sprayed weekly with GF-120 NF Naturalyte1. Mature fruits were harvested randomly from each tree on four sampling dates. Differences in the number of fruit fly larvae between pairs within each cultivar were evaluated by a paired t-test. A lower number of Anastrepha larvae were observed in fruits from treated trees. Statistical analysis demonstrates the efficiency of GF-120 NF Naturalyte1 to control A. suspensa in the evaluated peach cultivars.