Chemical Composition and Insecticidal and Repellent Effect of Essential Oils of Two Premna Species against Sitotroga cerealella

Table 2

Rate of S. cerealella death, of emergence, of number of rice attacked (), and of weight loss () provoked by P. angolensis essential oil in contact method.

Dose (μL mL^−1)	Mortality	Emerged	(%)	(%)
0	18.78 ± 0.07^b	85.71 ± 0.03^a	25.19 ± 2.41^b	22.726 ± 1.955^b
3	90.12 ± 0.30^a	1.07 ± 0.06^b	0.37 ± 0.01^c	0.003 ± 0.048^c
5	94.26 ± 0.17^a	0.40 ± 0.11^c	0.32 ± 0.020^c	0.046 ± 0.028^c
10	100 ± 0.00^a	0.33 ± 0.05^cd	0.26 ± 0.02^c	0.003 ± 0.024^c
15	100 ± 0.00^a	0.13 ± 0.10^d	0.15 ± 0.02^c	0.000 ± 0.020^c
Probability	<0.001	<0.001	<0.001	<0.001
CV (%)	13.75	10.58	18.76	16.85

0: ethanol treatment (control); very highly significant difference (0.1%).
The averages followed by the same letter were not significantly different at the beginning of 5%.