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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

From: Isolation, characterization, and bio-insecticidal efficiency of Ethiopian isolates of Bacillus thuringiensis against Galleria mellonella L. (Lepidoptera: Pyralidae) and tomato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae)

Isolates LC50 (spores/ml) 95% CL LC90 (spores/ml) 95% CL Slope ± SE χ2 P value
Lower Upper Lower Upper
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
  1. LC50 average lethal concentration, CL confidence limit, SE standard error, χ2 chi square