title: Comparative applications of azadirachtin- and Brevibacillus laterosporus-based formulations for house fly management experiments in dairy farms.
abstract: The potential of two bioinsecticidal formulations containing Brevibacillus laterosporus spores and azadirachtin, respectively, was assayed in laboratory and in comparative field treatments for the management of immature house flies on dairy farms. As already known for B. laterosporus, preliminary laboratory experiments with azadirachtin evidenced a concentration-dependent effect. Azadirachtin median lethal concentration (LC50) value determined for second instar larvae was 24.5 microg/g diet. Applications in dairy farms were performed at dosages and concentrations predetermined in laboratory experiments, to employ the two formulations at an equal insecticidal potential. Repeated applications on the cow pen caused a significant fly development depression in areas treated with azadirachtin (63%) and B. laterosporus (46%), compared with the control. Formulations were applied at a dosage of 3 liters/m2, and concentrations of 2 x 10(8) B. laterosporus spores/ml and 25 microg azadirachtin/ml, respectively.
authors.affiliation: Dipartimento di Protezione delle Piante, Sezione Entomologia, University of Sassari (Italy), Vie E. de Nicola, 07100 Sassari, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Ruiu
authors.forename: A
authors.initials: A
authors.lastname: Satta
authors.forename: I
authors.initials: I
authors.lastname: Floris
mesh_terms: D000818:Animals; D058675:Brevibacillus / Q000502:physiology*; D002417:Cattle; D003612:Dairying; D004175:Diptera / Q000187:drug effects* / Q000382:microbiology*; D006799:Housing, Animal; D007300:Insect Control / Q000379:methods; D007306:Insecticides / Q000494:pharmacology; D036701:Limonins / Q000494:pharmacology*; D010572:Pest Control, Biological / Q000379:methods*
chemical_list: D007306:Insecticides; D036701:Limonins; C010329:azadirachtin