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A study on bioassays for toxicities of several highly effective strains of Bacillus thuringiensis to four species of lepidopterous larvae

A study on bioassays for toxicities of several highly effective strains of Bacillus thuringiensis to four species of lepidopterous larvae

Chinese Journal of Biological Control 11(1): 22-25

The toxicities of spore-crystal preparations of seven selected highly effective strains of Bacillus thuringiensis to Ostrinia furnacalis, Helicoverpa armigera, Mythimna separata and Euxoa segetum were tested by using standard bioassay techniques. According to the LC50s, the GO2 strain (which belongs to serotype H6) was the most pathogenic to the four tested insects, while the 80-1 strain (serotype H3ab) was more pathogenic than the HD-1 strain to H. armigera and M. separata.

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