Table 5.

Progeny production, total weight loss (WL in %), and feeding damage (Frass wt. in mg) (means ± SE) from exposure of 10 mixed-sex parental adult S. zeamais on untreated corn and corn treated with the insecticide combinations Table 1. F and p values given for selected orthogonal contrasts.

	Treatment	#	Mean ± SE	Contrast	F	p
Progeny	Untreated	1	26.4 ± 5.9
	SC0.5	2	10.8 ± 5.1	1 vs. 2	8.5	0.004
	SC0.5 + M1.25	3	7.3 ± 4.1	1 vs. 5	6.0	0.156
	SC0.5 + M2.5	4	10.8 ± 4.4	2 vs. 5	0.2	0.633
	EC0.5	5	13.4 ± 5.0	5 vs. 6	2.1	0.151
	EC1.0	6	5.7 ± 3.0	3 vs. 7	1.2	0.267
	EC0.5 + M1.25	7	1.4 ± 1.0	4 vs. 8	1.2	0.274
	EC0.5 + M2.5	8	5.0 ± 2.6	7 vs. 9	0.0	0.975
	EC1.0 + M1.25	9	2.0 ± 1.7	6 vs. 10	0.7	0.403
	EC1.0 + M2.5	10	1.0 ± 1.1	1 vs. 10	22.3	<0.001
Total WL	Untreated	1	1.12 ± 0.16
	SC0.5	2	0.84 ± 0.26	1 vs. 2	0.8	0.377
	SC0.5 + M1.25	3	0.72 ± 0.26	1 vs. 5	0.8	0.386
	SC0.5 + M2.5	4	0.99 ± 0.24	2 vs. 5	0.0	0.987
	EC0.5	5	0.85 ± 0.23	5 vs. 6	0.5	0.479
	EC1.0	6	0.63 ± 0.24	3 vs. 7	0.8	0.369
	EC0.5 + M1.25	7	0.43 ± 0.20	4 vs. 8	0.5	0.465
	EC0.5 + M2.5	8	0.76 ± 0.30	7 vs. 9	0.1	0.792
	EC1.0 + M1.25	9	0.39 ± 0.09	6 vs. 10	0.2	0.716
	EC1.0 + M2.5	10	0.52 ± 0.13	1 vs. 10	3.8	0.054
Frass wt.	Untreated	1	0.25 ± 0.11
	SC0.5	2	0.14 ± 0.07	1 vs.2	2.7	0.104
	SC0.5 + M1.25	3	0.08 ± 0.04	1 vs. 5	2.3	0.132
	SC0.5 + M2.5	4	0.19 ± 0.07	2 vs. 5	0.0	0.904
	EC0.5	5	0.15 ± 0.04	5 vs. 6	0.7	0.994
	EC1.0	6	0.09 ± 0.04	3 vs. 7	0.0	0.316
	EC0.5 + M1.25	7	0.08 ± 0.05	4 vs. 8	1.0	0.922
	EC0.5 + M2.5	8	0.12 ± 0.04	7 vs. 9	0.0	0.805
	EC1.0 + M1.25	9	0.05 ± 0.02	6 vs. 10	0.6	0.363
	EC1.0 + M2.5	10	0.07 ± 0.04	1 vs. 10	6.7	0.012