Control of the Caribbean fruit fly on three peach cultivars in Adjuntas, Puerto Rico

Sara Ramos, Maria Del Carmen Libran, Angel Gonzalez, Robert Rouse, Phil Stansly, Annette Wszelaki, Pablo Morales-Payan, Evelio Hernandez


Low-chill peach cultivars (‘Flordaprince’, ‘TropicBeauty’, and ‘Flordaglo’) were evaluated in two sites (Beneficiado and Montaña) in Adjuntas, PR. Fruit yield and quality were severely reduced by Caribbean fruit fly [Anastrepha sus­pensa (Loew)], which had not been previously reported in peaches in Puerto Rico. The objective of this study was to evaluate a control method for this species. To evaluate fruit fly control, a paired design was used. 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 Naturalyte® (Dow AgroSciences). Mature fruits were harvested randomly from each tree on four sampling dates. A lower number of fruit fly larvae were observed in fruits from treated trees. Differences in the number of fruit fly larvae between pairs within each cultivar were evaluated by a paired t test. Statisical analysis results demonstrated the efficiency of the treatment to control A. suspensa in the evaluated peach cultivars. By increasing the treated area, efficacy should improve.

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283

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