Insecticidal and genotoxic activity of Psoralea corylifolia Linn. (Fabaceae) against Culex quinquefasciatus Say, 1823

Table 3 Mean knockdown time and corrected percent mortality of essential oil of P. corylifolia against adult Cx. quinquefasciatus at different concentrations

Concentration (mg/cm²)	% kd in 1 hr.	Kdt₅₀	Kdt₉₀	% Corrected mortality in 24 hr.
0.034	38.3	ND	ND	20
0.055	91.65	20.29±0.88	47.87±3.18	45
0.069	100	18.06±1.32	36.00±1.32	70
0.104	100	13.45±0.60	25.75±1.25	85
0.138	100	11.16±0.49	19.40±0.96	95
0.173	100	9.87±0.48	17.85±0.95	100
Control	0	-	-	0
0.05% Deltamethrin	100	14.91±0.67	30.89±1.58	96.7

^Kdt Knockdown time (minutes)±standard error, ^NDnot determined. Six concentrations were tested with control (significantly different at P < 0.05) three replicates were taken. Kdt values were determined by probit analysis and mortality was corrected using Abbott's formula.

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