Chemical Characterization and Biological Activities of Essential Oil Obtained from Mint Timija Cultivated under Mineral and Biological Fertilizers

Table 3

Lethal concentrations (LC₅₀ and LC₉₀) values of mint timija essential oils applied by contact toxicity bioassay against T. confusum.

Essential oils	LC50 (µL/cm^2)	LC90 (µL/cm^2)	Slope ± SE		Df
	(95% CL)	(95% CL)
Untreated control	0.13 (0.06–0.18)	0.37 (0.22–1.19)	3.24 ± 1.12	0.59	2
N, P, and K fertilizer	0.10 (0.02–0.15)	0.28 (0.19–1.08)	2.99 ± 1.15	0.63	2
Mycorrhizal inoculation	0.12 (0.05–0.20)	0.33 (0.28–1.83)	4.32 ± 1.29	0.28	2

95% lower and upper confidence limits are shown in parenthesis. Degree of freedom; SE: standard error. LC values are considered significantly different when 95% CL did not overlap.