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Titrage et définition d'une unité biologique pour les préparations deBacillus thuringiensis Berliner
- Source :
- Entomophaga. 4:201-206
- Publication Year :
- 1959
- Publisher :
- Springer Science and Business Media LLC, 1959.
-
Abstract
- The caterpillars ofPieris brassicaeL. are used as test-insects in order to appreciate the efficacy ofBacillus thuringiensis preparations. A biological unity is used as a value of expressing the toxicity of these preparations. It is defined as the ratio between the L D 50 of a standard preparation and that of the test sample. In order to avoid the variation that occurs when the caterpillars have not always the same physiological conditions, a correction is made by using an ideal constant mortality curve of the standard preparation. This curve has been established on caterpillars being in very good physiological conditions.
Details
- ISSN :
- 15738248 and 00138959
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Entomophaga
- Accession number :
- edsair.doi...........b4f94583406befdf8497c59baec74004