Table 2.

The contact activity of EOs on 10th-instar T. molitor

EO	Number of insects tested	Adjusted mortality of T. molitor (%) (± SE)
		24 h	48 h
C. limonum	90	46.7 ± 3.9 ba	65.6 ± 4.0 ba
Cy. citratus	90	22.4 ± 2.9 c	46.7 ± 3.9 c
L. cubeba	90	66.7 ± 1.9 a	88.9 ± 2.9 a
M. fragrans	90	32.2 ± 2.2 c	47.8 ± 2.8 c
Control	90	0 d	0 d
F4,10	—	96.5	110.9
P	—	<0.0001	<0.0001

^a Means within a column followed by the different letter are significant (P < 0.05) as determined by Duncan’s test.