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Table 6 Regression equation of NCTD against 3rd-instar larvae of P. xylostella

From: Formulation and evaluation of norcanthridin nanoemulsions against the Plutella xylostella (Lepidotera: Plutellidae)

Time Regression equation R2 χ2 LC50 (mg/L)
(95% confidence limits)
LC90 (mg/L)
(95% confidence limits)
12 h
24 h y = 6.379x - 14.881 0.921 0.462 150.090 (114.135~310.777) 312.188 (203.841~10,200.727)
36 h y = 5.637x - 12.727 0.992 0.156 75.992 (30.489~108.489) 191.903 (130.619~791.051)
48 h y = 2.630x – 4.684 0.985 0.264 60.414 (23.136~92.727) 185.530 (117.860~693.284)
  1. LC50 = Lethal concentration at which 50% of the larvae showed mortality
  2. LC90 = Lethal concentration at which 90% of the larvae showed mortality
  3. x = log concentration
  4. y = percentage mortality