Composition, Repellent, and Insecticidal Activities of Two South American Plants against the Stored Grain Pests Tribolium castaneum and Tribolium confusum (Coleoptera: Tenebrionidae)

Table 4

Fumigant activity of EOs of A. polystachya and A. citriodora against T.  confusum.

Essential oil	LC50^a	95% CI^c	LC95^b	95% CI^c	Slope ± SE^d	𝑋^2
A. polystachya	5.92^a	(5.2–6.5)	11.9	(10.08–15.9)	5.37 ± 0.75	2.75
A. citriodora	5.53^a	(2.6–6.8)	13.2	(10.5–30.6)	4.35 ± 1.39	0.12

^aLC₅₀: lethal concentration 50 (mg litre⁻¹ air); ^bLC₉₅: lethal concentration 95 (mg liter⁻¹ air); ^cCI 95%: confidence interval of 95%; ^dSE: standard error. Numbers in the same column followed by the same letters do not differ significantly.