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Table 1 Lethal concentration of susceptible and field population of Spodoptera exigua to Cry1Ac toxin during 2015

From: Efficacy of Cry1Ac toxin from Bacillus thuringiensis against the beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae)

Larval instars POP LC50 Fiducial limit Equation χ 2 RR P value (df = 5)
L1 SS 0.45 ± 0.03 0.02–0.99a 0.17 + 1.09 9.82 1 0.08
FSD 0.86 ± 0.06 0.23–1.95ab 0.16X + 0.67 9.50 1.93 0.09
MLT 1.35 ± 0.08 0.31–3.09abc 0.15X − 0.21 14.09 3.01 0.01
BWP 2.52 ± 0.09 1.01–4.87bcd 0.14X + 0.44 11.81 5.63 0.04
L2 SS 1.08 ± 0.06 0.46–2.75a 0.17 + 0.94 6.19 1 0.29
FSD 2.62 ± 0.51 1.21–4.51ab 0.16X + 0.57 7.73 2.41 0.17
MLT 4.02 ± 0.89 3.04–6.81bc 0.13X + 0.30 6.83 3.71 0.23
BWP 5.74 ± 1.13 3.76–7.14bcd 0.14X − 0.09 7.60 5.30 0.02
L3 SS 2.01 ± 0.95 1.00–4.02a 0.13 + 0.609 1.21 1 0.94
FSD 4.65 ± 1.02 2.02–8.11ab 0.14X + 0.39 5.49 2.31 0.36
MLT 6.24 ± 1.38 2.72–9.48abc 0.14X + 0.20 9.57 3.10 0.09
BWP 7.85 ± 3.28 4.45–10.76bcd 0.16X − 0.02 8.78 3.89 0.12
  1. Different letters in the same column indicate significant differences due to non-overlapping basis of 95% CI