Ruta chalepensis L. Essential Oil Has a Biological Potential for a Natural Fight against the Pest of Stored Foodstuffs: Tribolium castaneum Herbst

Table 5

Equation of regression lines, regression coefficients, and lethal time 50 (LT₅₀) values evaluated for the 4 concentrations of Ruta chalepensis essential oil.

Concentration (μl/ml)	Equation of regression	R^2	Log time	TL50 (h)
0.15	Y = 1.5311x + 2.5348	0.9770	1.610	40.73
0.31	Y = 1.5026x + 3.0425	0.9559	1.303	19.95
0.46	Y = 2.1074x + 2.5261	0.9503	1.174	14.79
0.62	Y = 2.8117x + 1.9839	0.7830	1.073	11.75