Ovicidal Activity of Couroupita guianensis (Aubl.) against Spodoptera litura (Fab.)

Table 1

Ovicidal activity and effective concentrations (mg/mL) of Couroupita guianensis crude extracts against Spodoptera litura.

Solvent extract	Concentration (mg/mL)				𝑅	𝑅^2	Regression; equation	𝑃 value	LC50	LC90	𝜒^2
	5	10	25	50
Hexane	21.98±4.03^b	39.52±5.94^b	51.17±5.94^c	67.33±4.03^b	0.92	0.84	26.78±0.899	0.000	28.05	82.50	44.04*
Chloroform	23.16±5.27^b	31.20±5.20^b	41.82±5.52^b	47.57±4.70^a	0.84	0.70	24.60±0.050	0.000	49.99	145.40	31.02*
Ethyl acetate	6.93±4.77^a	16.16±4.20^a	24.41±2.12^a	42.85±6.26^a	0.95	0.89	5.76±0.75	0.000	55.94	108.28	36.31*
ANOVA	Df 2, 12, F.18, 35 P 0	Df 2, 12, F.26.15 P 0	Df 2, 12, F.39.31 P 0	Df 2, 12, F.32.54 P 0
Homogeneity	0.67	0.52	0.13	0.38

Means followed by the same letter do not differ significantly using Tukey’s test (𝑃≤0.05) and complete regression equations; ^∗𝜒² values are significant.