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

Table 2

Ovicidal activity and effective concentrations (𝜇g/mL) of Couroupita guianensis hexane fractions against Spodoptera litura.

Fractions	Concentration (µg/mL)				𝑅	𝑅^2	Regression equation	𝑃 value	LC50	LC90	𝜒^2
	125	250	500	1000
1	17.42±4.61^cd	32.63±4.04^cd	43.50±4.13^de	51.11±3.10^c	0.87	0.76	20.11±0.034	0.000	871.14	2268.09	43.11*
2	10.81±3.62^abc	17.30±4.10^ab	24.97±4.52^b	32.57±5.12^b	0.87	0.76	10.37±0.024	0.000	1509.42	3137.48	27.91
3	28.24±1.96^e	35.84±4.45^d	42.39±2.28^d	47.83±2.30^c	0.88	0.78	28.99±0.020	0.000	1021.37	3426.26	12.92
4	7.60±2.94^ab	13.04±2.93^a	15.20±2.33^a	19.70±5.79^a	0.81	0.65	7.53±0.015	0.000	2213.23	4273.60	21.80
5	4.32±4.61^a	11.98±6.14^a	17.42±2.71^a	19.53±2.65^a	0.72	0.52	6.21±0.015	0.000	2131.16	3997.78	55.51*
6	15.26±4.75^bc	23.85±4.52^bc	32.57±3.29^c	42.33±3.66^c	0.91	0.83	14.89±0.020	0.000	1167.88	2688.15	25.02
7	23.91±2.94^de	40.17±5.69^d	50.00±4.34^e	60.93±5.31^d	0.89	0.79	26.09±0.038	0.000	636.06	1951.39	39.33*
8	30.46±3.24^e	51.05±4.18^e	59.82±4.30^f	71.69±2.90^e	0.89	0.79	34.14±0.041	0.000	384.43	1576.55	41.13*
Azadirachtin	42.33±3.66^f	54.26±4.01^e	65.20±2.98^f	76.02±3.50^e	0.92	0.85	42.76±0.036	0.000	206.42	1525.75	18.92
ANOVA	Df 8, 36 F 54.93	Df 8, 36 F 59.80	Df 8, 36 F 126.85	Df 8, 36 F 111.95
Homogeneity	0.74	0.93	0.60	0.001

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.