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Evaluation of a new formulation of Bacillus thuringiensis israelensis
J Lopes1, O M N Arantes, M A Cenci
1Departamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina, PR, Brazil. jea@uel.br
Abstract:
The aim of this study was to determine the potency (ITU) and efficacy of a liquid formulation of Bacillus thuringiensis israelensis developed by the State University of Londrina named BioUel, against early fourth instar larvae of Aedes aegypti and Culex quinquefasciatus. The ITU/mg of BioUel was 960, the LC₅₀ was of 0.271 (± 0.39) ppm, and the LC₉₅ was 0.634 (± 0.099) ppm, in larvae of C. quinquefasciatus. In A. aegypti larvae, LC₅₀ was 0.332 (± 0.042) ppm and LC₉₅ was 0.694 (± 0.073) ppm. The ITU level of BioUel and its control results were similar to most commercial products tested. Stability was of approximately 90 days, which allows for local production.
