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Table 3 Toxicity of some active compounds (µg/larva) against second instars of S. litura at 24 h

From: A plant-based extract mixture for controlling Spodoptera litura (Lepidoptera: Noctuidae)

  Plant source LD50 LD50 LCL LD50 UCL Slope ± SE Chi square
Beta-asarone A. calamus 6.24 4.62 8.66 1.44 ± 0.16 5.67
Alpha-asarone A. calamus 2.22 1.74 2.61 2.94 ± 0.42 0.11
(2E,4E,14Z)-N-isobutylicosa-2,4,14-trienamide P. retrofractum 1.66 1.34 1.95 2.19 ± 0.33 0.02
Piperine P. retrofractum 81.56 36.71 181.27 2.10 ± 0.66 28.86
  1. LD50 lethal dosage that kills 50% of the exposed larvae, expressed in μg/larvae; SE standard error; LCL lower confidence limit; UCL upper confidence limit