Table 1.

Log-dose probit mortality for commercial BPU insecticides and etoxazole tested against third instar larvae of different strains of diamondback moth in leaf-dip bioassays (96 h)

Compound	Strain	n	LC50, ppm	95% CL*	Slope	RR†
Diflubenzuron	BCS-S	300	36	21.0–60.3	1.3
	Japan	300	45	24–85	1.2	1
	Sudlon	300	317	118–855	1.2	9
	Sudlon-Tfm	300	>1,000			>28
Triflumuron	BCS-S	420	5.3	4.2–6.9	1
	Japan	420	11.6	7.8–17.3	0.89	2
	Sudlon	420	17.6	10.5–29.5	0.88	3
	Sudlon-Tfm	180	>1,000			>188
Lufenuron	BCS-S	450	1.8	0.96–3.5	1.3
	Japan	420	1.2	0.28–4.7	0.47	1
	Sudlon	390	0.63	0.2591–1.510	0.86	1
	Sudlon-Tfm	330	354	57–2189	0.94	196
Flucycloxuron	BCS-S	240	0.16	0.15–0.18	1.3
	Japan	240	0.36	0.21–0.63	1.6	2
	Sudlon	240	0.091	0.068–0.12	1.1	1
	Sudlon-Tfm	540	179	27–1183	0.50	1,119
Etoxazole	BCS-S	120	2.8	1.7–4.4	0.99
	Sudlon	120	5.3	3.2–8.7	0.99	2
	Sudlon-Tfm	120	>500			>178

^*95% confidence limits.

^†Resistance ratio (based on strain BCS-S).