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Comparative applications of Azadirachtin- and Brevibacillus laterosporus-based formulations for house fly management experiments in dairy farms

Ruiu, Luca and Satta, Alberto and Floris, Ignazio (2011) Comparative applications of Azadirachtin- and Brevibacillus laterosporus-based formulations for house fly management experiments in dairy farms. Journal of Medical Entomology, Vol. 48 (2), p. 345-350. eISSN 1938-2928. Article.

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DOI: 10.1603/ME09299

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 µg/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 × 108 B. laterosporus spores/ml and 25 µg azadirachtin/ml, respectively.

Item Type:Article
ID Code:6586
Status:Published
Refereed:Yes
Uncontrolled Keywords:House fly, azadirachtin, Brevibacillus laterosporus, bioinsecticide, pest management
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/11 Entomologia generale e applicata
Divisions:001 Università di Sassari > 01 Dipartimenti > Protezione delle piante
Publisher:Entomological Society of America
eISSN:1938-2928
Deposited On:17 Nov 2011 17:32

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