Repellent Effect and Insecticidal Activities of Bridelia ferruginea, Blighia sapida, and Khaya senegalensis Leaves Powders and Extracts against Dinoderus porcellus in Infested Dried Yam Chips
Table 3
Effect of treating yam chips with crude powders of B. ferruginea, B. sapida, and K. senegalensis on F1 progeny emergence and median development time (mean ± SE) of D. porcellus.
Treatments
Concentration (% w/w)
Mean number of F1 progenies
Median development time
Reproduction inhibition rate (%)
Control
0.0
5.0 ± 1.9
27.7 ± 9.2
0.0
Antouka
0.05
0.0 ± 0.0
0.0 ± 0.0
100.0
B. ferruginea
2.0
3.2 ± 1.6
27.6 ± 9.2
35.0
4.0
2.5 ± 1.3
27.7 ± 9.7
50.0
6.0
2.7 ± 1.1
36.4 ± 0.5
45.0
8.0
3.7 ± 1.2
36.4 ± 0.4
25.0
10.0
2.7 ± 0.7
37.6 ± 0.4
45.0
B. sapida
2.0
3.0 ± 1.2
27.7 ± 9.2
40.0
4.0
4.7 ± 2.2
36.5 ± 0.5
5.0
6.0
3.7 ± 0.8
35.9 ± 0.1
25.0
8.0
3.5 ± 0.8
36.2 ± 0.4
30.0
10.0
4.7 ± 1.5
36.7 ± 0.6
5.0
K. senegalensis
2.0
4.0 ± 1.2
36.4 ± 0.5
20.0
4.0
4.2 ± 1.1
37.2 ± 0.3
15.0
6.0
4.2 ± 2.1
27.1 ± 9.0
15.0
8.0
4.5 ± 1.7
37.1 ± 0.6
10.0
10.0
3.7 ± 1.4
27.5 ± 9.1
25.0
Means in a column followed by different letters are significantly different at α = 0.05.
