Comparative Toxicity of Two Isolates of Bacillus thuringiensis Berliner from Plutella xylostella L. and Papilio demoleus L. to some Important Lepidopteran Pests of Horticultural Crops
Toxicity of two isolates of Bacillus thuringiensis viz. KPx-1 and IPd-1 isolated from diamondback moth, Plutella xylostella (Lepidoptera: Yponomeutidae), and citrus butterfly, Papilio demoleus (Lepidoptera: Papilionidae), were tested against cabbage leaf webber, Crocidolomia binotalis, hairy caterpillar, Diacrisia obliqua and tomato fruit borer, Helicoverpa armigera. Among these, C. binotalis was highly susceptible (28.4 and 26.0 ng/cm2, for KPx-1 and IPd-1, respectively), while, H. armigera was the least susceptible (9.5 and 10.0 μg/ml, for KPx-1 and IPd-1, respectively).
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