| Plant extracts |
% mortality (M+SD) |
Order of relative efficacy |
| |
6.25 ppm |
12.5 ppm |
25 ppm |
50 ppm |
100 ppm |
200 ppm |
|
| Aloe pirottae |
0.00 ± 0.00 |
3.33 ± 2.88 |
11.67 ± 2.88 |
20.00 ± 5.00 |
30.00 ± 5.00 |
53.33 ± 5.77 |
4 |
| Brassica nigra |
8.33 ± 2.88 |
8.33 ± 2.88 |
25.00 ± 0.00 |
28.33 ± 2.88 |
35.00 ± 5.00 |
75.00 ± 5.00 |
3 |
| Oreosyce africana |
20.00 ± 5.00 |
46.67 ± 2.88 |
51.67 ± 2.88 |
100.00 ± 00 |
100.00 ± 00 |
100.00 ± 00 |
1 |
| Piper capense |
15.00 ± 5.00 |
28.33 ± 2.88 |
45.00 ± 5.00 |
95.00 ± 00 |
100.00 ± 00 |
100.00 ± 00 |
2 |
M = means of three replicates, SD = standard deviation, *no
mortality was observed in controls |
