Case Study: Trap Crop with Pheromone Traps for Suppressing Euschistus servus (Heteroptera: Pentatomidae) in Cotton

Table 5

Frequency (%) of E. servus, N. viridula, and C. hilaris in cotton by week for sorghum trap crop with pheromone traps (STC/PTs), sorghum trap crop (STC), and control (CO) fields in 2004 and sorghum trap crop (STC) and control (CO) fields in 2006.

			E. servus		N. viridula		C. hilaris
Year	Wk	Trt	𝑛	%	𝑛	%	𝑛	%	𝜒^2	df	𝑃
	3	Control	7	15.91	37	84.09	0	0
		STC/PT	5	20.83	8	33.33	11	45.83
		STC	8	53.33	5	33.33	2	13.33
		Total	20	20.83	8	33.33	11	45.83	36.4	4	0.0001
2004	4	Control	11	8.09	121	88.97	2	2.94
		STC/PT	5	11.36	38	86.36	1	2.27
		STC	8	11.43	57	81.43	5	7.14
		Total	24	9.6	216	86.4	10	4.0	3.5	4	0.4852
	5	Control	22	5.45	373	92.33	9	2.23
		STC/PT	13	6.4	182	87.89	8	3.94
		STC	41	11.68	287	81.77	23	6.55
		Total	76	7.93	842	87.89	40	4.18	20.9	4	0.0003
	6	Control	8	18.18	29	65.91	7	15.91
		STC/PT	1	14.29	0	0	6	85.71
		Total	9	17.65	29	56.86	13	25.49	16.2	2	0.0003
2006	7	Control	19	32.2	37	62.71	3	5.08
		STC/PT	2	3.08	26	40.0	37	56.92
		Total	21	16.94	63	50.81	40	32.26	44.4	2	0.0001
	8	Control	43	32.82	76	58.02	12	9.16
		STC/PT	3	2.42	34	27.42	87	70.16
		Total	46	18.04	110	43.14	99	38.82	107.5	2	0.0001