Table 3 Insecticidal activity (%) of different tested oils against second larval instar of S. frugiperda post 72 h of treatment
Oil concentrations | Cinnamon | Lemon grass | Rosemary | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean of larval mortality% | ||||||||||||
Mean ± SE | ||||||||||||
2.5% | 66.67 | ± | 6.67 | a | 100.00 | ± | 0.00 | a | 66.67 | ± | 24.04 | a |
2% | 46.67 | ± | 17.64 | ab | 40.00 | ± | 20.00 | b | 26.67 | ± | 6.67 | b |
1% | 40.00 | ± | 11.55 | ab | 20.00 | ± | 11.55 | bc | 20.00 | ± | 0.00 | b |
0.5% | 33.33 | ± | 6.67 | b | 13.33 | ± | 6.67 | bc | 13.33 | ± | 6.67 | b |
0.25% | 26.67 | ± | 6.67 | bc | 6.67 | ± | 6.67 | bc | 6.67 | ± | 6.67 | b |
control | 0.00 | ± | 0.00 | c | 0.00 | ± | 0.00 | c | 0.00 | ± | 0.00 | b |
F | 5.11** | 13.157** | 4.75** | |||||||||