Evaluation of the insecticidal activity of the methanol extracts of Calotropis procera (Asclepiadaceae) and Albizia lebbeck (Mimosaceae) on larvae of Culex quinquefasciatus Say, 1823

The Journal of Basic and Applied Zoology

Table 2 Larvicidal activity of Albizia lebbeck crude extract on Culex quinquefasciatus at different concentrations

Larval stages	Mortality rate of Cx. quinquefasciatus larvae (%)							LC₅₀	LC₉₀	CI95				\({\chi }^{2}\)(df = 6)	Equations of regression line
	Concentrations of crude extract of Albizia lebbeck (mg/mL)									LFL		UFL
	0.1	0.2	0.3	0.4	0.5	0.6	0.7			LC₅₀	LC₉₀	LC₅₀	LC₉₀
L1	16	26	45.65	57.60	85.22	98.86	100	0.238	0.456	0.196	0.208	0.288	0.983	27.20*	Y = 4.5383x + 7.8287
L2	12	18	35	56.52	77.27	97.72	100	0.264	0.498	0.221	0.264	0.315	0.939	25.26*	Y = 4.643x + 7.6836
L3	7	9	40.21	53.26	75	94.04	100	0.290	0.531	0.257	0.374	0.327	0.753	27.39*	Y = 4.8662x + 7.62
L4	4	10	26	48.91	71.59	85.71	100	0.316	0.580	0.284	0.437	0.352	0.768	17.01*	Y = 4.8692x + 7.4356

LFL, lower fiducidal limit; UFL, upper fiducidal limit; χ², Chi-square value; df, degrees of freedom; CI, confidence interval
*Significant at P < 0.05 level