title: SR450 And Superhawk XP Applications Of Bacillus thuringiensis israelensis Against Culex quinquefasciatus.
abstract: Sprayer comparisons and larval morality assays were conducted following SR450 backpack mist blower and Superhawk XP thermal fogger applications of Vectobac® WDG Bacillus thuringiensis israelensis (Bti) against Culex quinquefasciatus. Bacillus thuringiensis israelensis was applied at maximum label rate in a 232.26-m(2) field plot located in north-central Florida with containers placed at 2 heights (ground level and 1.52 m above ground) on stakes positioned 3.04, 6.09, 9.14, 12.19, and 15.24 m from the spray line. Results indicated that there was no significant (P > 0.05) difference in 24- and 48-h larval mortality between the 2 sprayers or between the 2 heights. There was significant difference (P < 0.05) among the 5 rows, with mortality continuously decreasing with increasing distance from sprayer. Both sprayers provided on average >70% larval mortality 3.04-9.14 m from the spray line, and <60% mortality at 12.19 and 15.24 m. The data suggest that the SR450 and Superhawk XP may be comparable sprayers for use with Bti to control mosquito larvae.
authors.affiliation: 2  Navy and Marine Corps Public Health Center Detachment, Centers for Disease Control and Prevention, Atlanta, GA 30329.
authors.forename: James C
authors.initials: JC
authors.lastname: Dunford
authors.forename: Craig A
authors.initials: CA
authors.lastname: Stoops
authors.forename: Alden S
authors.initials: AS
authors.lastname: Estep
authors.forename: Seth C
authors.initials: SC
authors.lastname: Britch
authors.forename: Alec G
authors.initials: AG
authors.lastname: Richardson
authors.forename: Todd W
authors.initials: TW
authors.lastname: Walker
authors.forename: Muhammad
authors.initials: M
authors.lastname: Farooq
authors.forename: David F
authors.initials: DF
authors.lastname: Hoel
authors.forename: Raymond R
authors.initials: RR
authors.lastname: Platt
authors.forename: Vincent L
authors.initials: VL
authors.lastname: Smith
authors.forename: Robert A
authors.initials: RA
authors.lastname: Wirtz
authors.forename: Jerry D
authors.initials: JD
authors.lastname: Kerce
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis / Q000472:pathogenicity*; D003465:Culex / Q000254:growth & development / Q000382:microbiology*; D005431:Florida; D007814:Larva / Q000254:growth & development / Q000382:microbiology; D009032:Mosquito Control / Q000295:instrumentation / Q000379:methods*; D010572:Pest Control, Biological / Q000295:instrumentation / Q000379:methods*
keywords: Larval control; backpack sprayer; container-inhabiting; thermal fogger