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

Table 4

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

Essential oils	LC50 (µL/L air)	LC90 (µL/L air)	Slope ± SE		Df
	(95% CL)	(95% CL)
Untreated control	23.97 (15.23–31.19)	54.38 (35.53–90.83)	4.39 ± 1.22	0.40	2
N, P, and K fertilizer	21.60 (15.16–27.51)	38.35 (27.71–63.97)	5.92 ± 1.78	0.30	2
Mycorrhizal inoculation	23.14 (11.52–31.52)	46.93 (41.42–99.03)	3.45 ± 1.09	1.15	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.