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Table 4 Molt inhibitory concentration of susceptible and field population of Spodoptera exigua to Cry1Ac toxin during 2016

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 0.05 + 0.00 0.01–0.07a − 0.21X − 2.23 2.00 1 0.85
FSD 0.12 + 0.02 0.08–0.51b − 0.12X − 1.38 0.49 2.64 0.99
MLT 0.40 + 0.06 0.10–0.81bc − 0.17X − 1.19 0.74 8.53 0.98
BWP 0.63 + 0.08 0.11–1.73bcd − 0.17X − 0.99 0.49 13.43 0.93
L2 SS 0.08 + 0.01 0.04–0.21a − 0.15X − 1.84 0.04 1 1.00
FSD 0.32 + 0.06 0.07–0.80ab − 0.16X − 1.03 0.64 4.10 0.99
MLT 0.70 + 0.09 0.19–1.41bc − 0.15X − 0.83 0.14 8.91 1.00
BWP 1.23 + 0.30 0.66–2.75bcd − 0.13X − 0.56 0.26 15.63 0.99
L3 SS 0.11 + 0.07 0.07–0.42a − 0.14X − 1.49 0.52 1 0.99
FSD 0.66 + 0.13 0.22–1.17ab − 0.16X − 0.89 0.62 5.99 0.99
MLT 0.93 + 0.21 0.35–1.69bc − 0.16X − 0.69 0.94 8.39 0.97
BWP 1.71 + 0.54 0.82–3.34bcd − 0.15X − 0.41 0.24 15.44 0.79