Treatments | Stages | Pieris brassicae mortality (%) after treatments | |||||
---|---|---|---|---|---|---|---|
Steinernema feltiae | Heterorhabditis bacteriophora | ||||||
24 h | 48 h | 72 h | 24 h | 48 h | 72 h | ||
Control | 2nd instar larvae | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
4th instar | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
Pupa | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
10 IJs/cm2 | 2nd instar | 17.50 | 32.50 | 42.50 | 20.00 | 30.00 | 42.50 |
4th instar | 22.50 | 32.50 | 40.00 | 32.50 | 52.50 | 65.00 | |
Pupa | 20.00 | 32.50 | 45.00 | 22.50 | 35.00 | 45.00 | |
20 IJs/cm2 | 2nd instar | 25.00 | 37.50 | 50.00 | 27.50 | 40.00 | 50.00 |
4th instar | 35.00 | 45.00 | 55.00 | 45.00 | 67.50 | 77.50 | |
Pupa | 27.50 | 37.50 | 52.50 | 35.00 | 47.50 | 57.50 | |
40 IJs/cm2 | 2nd instar | 32.50 | 47.50 | 62.50 | 35.00 | 47.50 | 57.50 |
4th instar | 47.50 | 57.50 | 67.50 | 55.00 | 72.50 | 85.00 | |
Pupa | 40.00 | 50.00 | 60.00 | 45.00 | 57.50 | 70.00 | |
80 IJs/cm2 | 2nd instar | 37.50 | 55.00 | 70.00 | 42.50 | 60.00 | 70.00 |
4th instar | 55.00 | 67.50 | 77.50 | 67.50 | 80.00 | 90.00 | |
Pupa | 47.50 | 62.50 | 72.50 | 52.50 | 65.00 | 77.50 | |
160 IJs/cm2 | 2nd instar | 52.50 | 67.50 | 85.00 | 50.00 | 72.50 | 87.50 |
4th instar | 65.00 | 80.00 | 87.50 | 77.50 | 90.00 | 97.50 | |
Pupa | 55.00 | 75.00 | 90.00 | 60.00 | 77.50 | 90.00 | |
LSD | 2nd instar | 4.64 | 4.17 | 6.44 | 5.80 | 7.24 | 10.03 |
(p < 0.05) | 4th instar | 5.35 | 6.03 | 6.05 | 4.37 | 8.46 | 9.80 |
Pupa | 5.80 | 5.69 | 8.78 | 4.95 | 4.39 | 8.54 |