Table 1. Toxicity of various insecticides to laboratory susceptible (Lab-PK) and field collected populations of H. armigera.

Population	Insecticides	LC50 (95% FL)(µg/ml)	Slope ± SE	RR1	DR2	n3
Susceptible	Cry1Ac	0.58 (0.28–1.20)	1.07±0.16	–	–	240
Susceptible	Chlorpyrifos	0.46 (0.18–0.96)	1.03±0.17	–	–	240
Susceptible	Profenofos	0.50 (0.20–1.03)	1.06±0.17	–	–	240
Susceptible	Cypermethrin	0.26 (0.12–0.50)	1.20±0.17	–	–	240
Susceptible	Spinosad	1.45 (0.69–2.79)	1.13±0.18	–	–	240
Susceptible	Indoxacarb	0.90 (0.48–1.71)	1.27±0.17	–	–	240
Susceptible	Abamectin	0.23 (0.08–0.54)	0.85±0.14	–	–	240
Susceptible	Deltamethrin	0.42 (0.17–0.78)	1.27±0.22	–	–	240
Field	Cry1Ac	335.7 (244.2–477.6)	2.43±0.31	579	–	240
Field	Chlorpyrifos	148.7 (106.3–217.0)	2.29±0.27	323	–	240
Field	Profenofos	557.4 (420.3–734.5)	3.20±0.46	1115	–	240
Field	Cypermethrin	506.8 (387.7–680.7)	3.28±0.44	1949	–	240
Field	Spinosad	284.7 (180.0–484.7)	1.74±0.30	196	–	240
Field	Indoxacarb	341.2 (260.8–459.7)	3.08±0.34	379	–	240
Field	Abamectin	159.2 (121.3–208.8)	3.15±0.53	692	–	240
Field	Deltamethrin	16.02 (12.74–20.32)	3.49±0.45	38		240
Field-UNSEL (G6)4	Cry1Ac	19.65 (11.56–33.04)	1.50±0.22	34	−0.21	240
Field-UNSEL (G6)	Chlorpyrifos	11.75 (7.96–17.83)	2.04±0.25	26	−0.18	240
Field-UNSEL (G6)	Profenofos	18.48 (12.30–27.83)	2.05±0.25	37	−0.25	240
Field-UNSEL (G6)	Cypermethrin	20.07 (12.71–31.48)	1.83±0.24	77	−0.23	240
Field-UNSEL (G6)	Spinosad	9.22 (5.76–14.81)	1.66±0.23	6	−0.25	240
Field-UNSEL (G6)	Indoxacarb	8.07 (4.04–14.37)	1.29±0.20	9	−0.27	240
Field-UNSEL (G6)	Abamectin	9.27 (5.88–14.79)	1.77±0.24	40	−0.21	240
Field-UNSEL (G6)	Deltamethrin	1.76 (1.14–2.61)	1.90±0.30	4	−0.16	240

¹Resistance ratio = LC₅₀ of field and unselected (UNSEL) population÷LC₅₀ of Lab-PK.

²Decline in resistance = Log₁₀ (initial LC₅₀–final LC₅₀)÷number of generation the population of unexposed to toxicant.

³The number of larvae exposed to toxins in bioassays including controls.

⁴Generations.