title: Field trials with tank mixtures of Bacillus thuringiensis subsp. israelensis and Bacillus sphaericus formulations against Culex pipiens larvae in septic tanks in Antalya, Turkey.
abstract: Efficacy of tank mixtures of commercial Bacillus thuringiensis subsp. israelensis (Bti) and Bacillus sphaericus (Bs) water-dispersable granule (WDG) formulations was evaluated in septic tanks, against Culex pipiens L. (Diptera: Culicidae) larvae. VectoLex WDG (Bs) + VectoBac WDG (Bti) were evaluated at various ratios from 488 g/ha VectoLex + 250 g/ha VectoBac up to 3,000 g/ha of each. All applications and ratios delivering VectoLex WDG at a rate equal to or greater than 988 g/ha provided more than 90% control for 28 days after treatment. The lowest dose provided this level of control for at least 7 days after treatment, with greater than 80% control after 2 wk. These results suggest that a retreatment interval of 2 wk is recommended with the lowest dose and retreatment intervals of 4 or more wk are recommended with the doses equal to or higher than 988 g/ha VectoLex + 250 g/ha VectoBac.
authors.affiliation: Department of Biology, Faculty of Arts and Science, Akdeniz University, Antalya 07058, Turkey.
authors.forename: Huseyin
authors.initials: H
authors.lastname: Cetin
authors.forename: Peter
authors.initials: P
authors.lastname: Dechant
authors.forename: Atila
authors.initials: A
authors.lastname: Yanikoglu
mesh_terms: D000818:Animals; D001407:Bacillus / Q000145:classification* / Q000502:physiology*; D003465:Culex / Q000382:microbiology*; D017753:Ecosystem; D007814:Larva / Q000382:microbiology; D009032:Mosquito Control / Q000379:methods*; D010572:Pest Control, Biological / Q000379:methods*; D014421:Turkey; D014881:Water Supply