Characterization of indigenous Bacillus thuringiensis isolate RM11 toxic to the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae)

Egyptian Journal of Biological Pest Control

Table 2 Toxicity of Bacillus thuringiensis isolate RM11 to diamondback moth, Plutella xylostella larvae, in comparison with positive control HD1

Isolate	Regression equation	χ²	LC₅₀ (μg/ml)	Confidence limits (95%)		LC₉₅ (μg/ml)	Confidence limits (95%)
Isolate	Regression equation	χ²	LC₅₀ (μg/ml)	Lower limit	Upper limit	LC₉₅ (μg/ml)	Lower limit	Upper limit
RM11	Y = 4.4206 + 0.8843x	3.36	4.51	2.261	15.708	757.9	35.26	16,294.1
Positive control HD1	Y = 6.5494 + 1.3729x	4.07	0.07	0.052	0.102	1.17	0.69	2.60

In negative control (78/11), there was no mortality even up to 1000 µg/ml and hence not included for comparison