Seasonal abundance of the caribbean fruit fly anastrepha suspensa in low-chill peaches in SW Florida and management with the spinosad bait spray gf-120

Philip A. Stansly, Robert E. Rouse

Abstract


Caribbean fruit fly (Anastrepha suspensa Loew) poses a major constraint on low-chill peach production in south and central Florida. Bait sprays, particularly those using malathion as a toxicant, have been the mainstay of fruit fly management until the recent appearance of baits using the "Naturalyte®" insecticide spinosad. These baits have the advantage of greater selectivity, acceptance by the general public, and availability in a formulated product "GF-120" (Dow AgroScience). GF-120 was tested in an experimental and an unpicked commercial-scale peach orchard during spring 2004. Bait sprays were applied by a battery powered hand sprayer, on foot or from the back of a pick-up truck at the labeled rate of 1 oz per tree. Efficacy was evaluated based on captures in McPhail traps using food lure attractants. Captures were reduced or eliminated within two weeks of application, even in the unpicked grove. Bait sprays using GF-120 appear to be an effective method of managing Caribbean fruit fly in peaches in south Florida.

Keywords


anastrepha suspensa; mcphail traps; control; ipm; peak activity

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