Table 2.

Activity and response of the lethal concentrations of plant extracts on D. neivai (Coleoptera: Chrysomelidae)

Ar. absinthium	LC50	1.89	1.55–2.39	81.77	<0.0001
	LC90	3.62	3.05–4.44
	LC99	6.57	5.54–8.07
Az. indica	LC50	3.73	2.75–4.18	11.92	0.0006
	LC90	9.69	6.40–11.5
	LC99	14.5	9.34–20.9
C. annuum	LC50	0.26	0.24–0.27	221.52	<0.0001
	LC90	0.51	0.47–0.57
	LC99	1.09	0.93–1.33
C. sinensis	LC50	0.22	0.48–3.54	12.09	<0.00005
	LC90	0.70	0.41–1.14
	LC99	1.80	0.75–1.24
N. tabacum	LC50	0.21	0.20–0.23	216.19	<0.0001
	LC90	0.41	0.37–0.45
	LC99	0.83	0.71–1.00
R. communis	LC50	0.32	0.30–0.35	183.64	<0.0001
	LC90	0.84	0.74–0.98
	LC99	2.35	1.85–3.25

C, concentrations causing 50, 90, and 99% mortality; E, estimated value; IC, confidence interval; Chi, chi-square value. Significance level at P < 0.0001.