Table 2 The residual effects of the botanicals and synthetic chemical on B. dorsalis larvae
Time after application (min) | |||||||
|---|---|---|---|---|---|---|---|
Treatments | 20 | 40 | 60 | 80 | 100 | 120 | 1440 |
P. guineense | 0.00 | 0.00b | 0.33b | 1.67a | 1.33b | 0.67b | 1.00b |
A. melegueta | 0.00 | 0.00b | 0.67a | 0.67b | 0.67b | 1.33a | 1.33b |
Z. officinale | 0.00 | 0.00b | 0.33b | 0.00c | 1.67a | 0.67 | 2.33a |
6% azadirachtin | 0.00 | 0.00b | 0.33b | 1.67a | 0.67b | 1.67a | 1.00b |
Cypermethrin | 0.00 | 0.67a | 0.00b | 1.00b | 2.33a | 1.00ab | 0.00c |
Control | 0.00 | 0.00b | 0.00b | 0.00c | 0.00c | 0.00c | 0.00c |