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Table 2 Molt inhibitory 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 MIC50 Fiducial limit Equation χ 2 RR P value (df = 5)
L1 SS 0.04 ± 0.00 0.01–0.03a − 0.20X–2.60 1.99 1 0.85
FSD 0.09 ± 0.00 0.01–0.38ab − 0.14X–1.47 0.62 2.09 0.99
MLT 0.24 ± 0.03 0.07–0.62bc − 0.14X–1.27 0.18 5.36 0.99
BWP 0.56 ± 0.04 0.10–1.10cd − 0.15X–1.06 1.54 12.51 0.91
L2 SS 0.08 ± 0.01 0.03–0.14a − 0.12X–1.89 0.07 1 1.00
FSD 0.22 ± 0.04 0.07–0.80ab − 0.12X–1.08 1.49 2.83 0.91
MLT 0.62 ± 0.51 0.09–1.41bc − 0.13X–0.88 1.10 8.06 0.95
BWP 0.99 ± 0.12 0.33–2.01cd − 0.11X–0.60 0.89 12.92 0.97
L3 SS 0.10 ± 0.07 0.05–0.31a − 0.13X–1.72 0.38 1 0.99
FSD 0.49 ± 0.10 0.09–0.81ab − 0.12X–0.94 1.49 4.76 0.91
MLT 0.80 ± 0.21 0.21–1.43bc − 0.13X–0.73 0.69 7.72 0.98
BWP 1.42 ± 0.41 0.80–3.05cd − 0.12X–0.46 0.21 13.66 0.99