Table 5 Median lethal concentration (LC₅₀) of Bacillus thuringiensis isolates against the third instar nymph of Bemicia tabaci (n = 20) on the 144 h of the concentration–response bioassay

AAUDS-16

9.67 × 10⁶

1.30 × 10⁶

6.64 × 10⁷

3.9 × 10⁹

1.7 × 10⁹

5.6 × 10¹²

0.36 ± 0.07

3.102

< 0.01

AAUES-36A

3.20x × 10⁷

7.2 × 10⁶

2.29 × 10⁸

3.7 × 10¹⁰

2.2 × 10⁹

5.7 × 10¹³

0.42 ± 0.10

1.096

< 0.01

AAUES-69D

1.16 × 10⁷

2.83 × 10⁶

4.96 × 10⁷

6.0 × 10⁹

6.8 × 10⁸

8.5 × 10¹¹

0.47 ± 0.1

0.229

< 0.01

AAUMS-23

1. 21 × 10⁸

1.45 × 10⁷

3.53 × 10⁹

4.7 × 10¹¹

2.2 × 10¹⁰

9.7 × 10¹⁸

0.28 ± 0.09

1.326

< 0.01