Table 1.

Synergism effects of 5-NU and SUL on the toxicities of chlorantraniliprole in the YYS and YYR strains.

Strain	Treatment	LC50 (95% CL) (mg·L−1)	Slope ± SE	x 2	RR	SR
YYS	Chlorantraniliprole	12.76 (11.08–14.76)	2.72 ± 0.31	5.96	1.00	1.00
	Chlorantraniliprole + 5-NU	10.48 (8.95–12.27)	2.42 ± 0.35	5.17	-	1.22
	Chlorantraniliprole + SUL	11.27 (9.76–13.03)	2.70 ± 0.32	7.72	-	1.13
YYR	Chlorantraniliprole	565.48 (510.42–626.47)	3.67 ± 0.22	7.31	44.32	1.00
	Chlorantraniliprole + 5-NU	167.47 (146.78–191.08)	2.97 ± 0.29	2.68	-	3.38 *
	Chlorantraniliprole + SUL	158.71 (139.32–180.79)	3.08 ± 0.28	7.75	-	3.56 *

* Indicates statistical significance. CL, Confidence limits; RR = LC₅₀ of YYR strain/LC₅₀ of YYS strain; SR = LC₅₀ of chlorantraniliprole/LC₅₀ of chlorantraniliprole + synergist.