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Table 4 Toxicity values of DL3 and DL4 isolates to 4th instar nymphs of S. gregaria using per os technique

From: Phylogenic and antagonistic characteristics of novel Bacillus cereus isolates against desert locust, Schistocerca gregaria Forskal (Orthoptera: Acrididae)

Isolate N Slope (SE) LC50a, b χ2 (df)c 95% FL Toxicity indexd
DL3 30 2.18 (0.8) 181 × 106 a 0.62 (3) 60 × 106–374 × 106 21.5
DL4 30 2.3 (0.7) 39 × 106 a 0.7 (4) 14 × 106–74 × 106 100
  1. N Refers to total number of insects in treatment
  2. aLC50’s reported in CFUs
  3. b LC50’s followed by the same letter are not significantly different based on overlap of their 95% Fiducial limits (P < 0.05)
  4. c L.R. chi-square goodness-of-fit values. Tabular values at P = 0.05for 3 df = 7.81, 4 df = 9.49
  5. dToxicity index (Sun 1950) = (LC50 of the most efficient compound (as standard)/LC50 of the other tested compound) × 100