Production & formulation of Bacillus thuringiensis var. israelensis & B. sphaericus 1593.
Artigo
em Inglês
| IMSEAR
| ID: sea-21023
ABSTRACT
Three fermentation media each for bulk growth of B. thuringiensis var. israelensis and B. sphaericus 1593 were formulated using defatted groundnut cake (Arachis hypogea) as the first nitrogen source and gram flour (Cicer arientinum), soy bean (Glycine max) and defatted milk powder as the second nitrogen source. Medium containing gram flour showed highest toxicity (14.45 micrograms/l) in case of B. thuringiensis var. israelensis whereas medium containing milk powder was found to be highly toxic with B. sphaericus 1593 (51.39 micrograms/l). Sustained release floating pellet formulations of B. thuringiensis var. israelensis and B. sphaericus 1593 exhibited toxicity of 77 per cent and above for 42 days at a dose of 500 micrograms/l for 4th instar larvae of Culex pipiens quinquefasciatus Say.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Bacillus
/
Bacillus thuringiensis
/
Controle Biológico de Vetores
/
Culex
/
Meios de Cultura
/
Preparações de Ação Retardada
/
Larva
/
Animais
Idioma:
Inglês
Ano de publicação:
1991
Tipo de documento:
Artigo
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