Table 3.

Progeny production, total weight loss (WL in %), and feeding damage (Frass wt. in g) (means ± SE) from exposure of 10 mixed-sex parental adult S. oryzae on untreated brown rice and brown rice 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	154.8 ± 23.9
	SC0.5	2	53.3 ± 6.3	1 vs. 2	36.1	<0.001
	SC0.5 + M1.25	3	58.5 ± 7.8	1 vs. 5	16.9	<0.001
	SC0.5 + M2.5	4	77.9 ± 10.8	2 vs. 5	3.6	0.085
	EC0.5	5	85.4 ± 12.5	5 vs. 6	1.7	0.199
	EC1.0	6	63.7 ± 11.3	3 vs. 7	3.3	0.071
	EC0.5 + M1.25	7	89.2 ± 9.2	4 vs. 8	0.1	0.741
	EC0.5 + M2.5	8	83.5 ± 10.3	7 vs. 9	5.1	0.024
	EC1.0 + M1.25	9	73.4 ± 11.4	6 vs. 10	0.6	0.448
	EC1.0 + M2.5	10	50.8 ± 5.8	1 vs. 10	37.9	<0.001
Total WL	Untreated	1	5.10 ± 1.06
	SC0.5	2	2.94 ± 1.10	1 vs. 2	2.5	0.115
	SC0.5 + M1.25	3	3.06 ± 0.84	1 vs. 5	6.1	0.014
	SC0.5 + M2.5	4	3.01 ± 0.92	2 vs. 5	0.8	0.371
	EC0.5	5	1.70 ± 1.60	5 vs. 6	0.5	0.489
	EC1.0	6	2.67 ± 0.70	3 vs. 7	0.3	0.599
	EC0.5 + M1.25	7	2.32 ± 0.49	4 vs. 8	0.1	0.888
	EC0.5 + M2.5	8	2.82 ± 0.71	7 vs. 9	0.1	0.792
	EC1.0 + M1.25	9	3.58 ± 1.71	6 vs. 10	0.3	0.601
	EC1.0 + M2.5	10	1.96 ± 0.43	1 vs. 10	5.3	0.023
Frass wt.	Untreated	1	0.76 ± 0.18
	SC0.5	2	0.34 ± 0.10	1 vs. 2	6.3	0.013
	SC0.5 + M1.25	3	0.31 ± 0.09	1 vs. 5	3.9	0.050
	SC0.5 + M2.5	4	0.44 ± 0.12	2 vs. 5	0.3	0.588
	EC0.5	5	0.43 ± 0.13	5 vs. 6	0.5	0.467
	EC1.0	6	0.30 ± 0.11	3 vs. 7	0.3	0.611
	EC0.5 + M1.25	7	0.40 ± 0.07	4 vs. 8	0.1	0.791
	EC0.5 + M2.5	8	0.49 ± 0.12	7 vs. 9	1.0	0.314
	EC1.0 + M1.25	9	0.49 ± 0.17	6 vs. 10	0.2	0.643
	EC1.0 + M2.5	10	0.22 ± 0.04	1 vs. 10	10.1	0.002