Mean (±SEM) percentage of dead first and second instar Allokermes kingii per four-branch sample.
| Treatment | Rate | 9 May (1 WAT) | 22 May (3 WAT) | 5 June (5 WAT) | 19 June (7 WAT) |
|---|---|---|---|---|---|
| Control | — | 5.7 ± 3.8 | 0 | 0 | 12.3 ± 5.7 |
| Acephate | 226.8 g/378 L (8 oz/100 gal) | 31.7 ± 4.1 | 32.7 ± 5.2* | 11.0 ± 3.2 | 18.3 ± 6.6 |
| Bifenthrin | 2.3 L/378 L (0.63 gal/100 gal) | 24.7 ± 2.6 | 16.0 ± 6.7 | 12.0 ± 5.1 | 9.7 ± 2.7 |
| Horticultural oil | 7.6 L/378 L (2.0 gal/100 gal) | 37.7 ± 11.1 | 26.7 ± 9.0* | 15.8 ± 3.0 | 21.7 ± 9.2 |
| Imidacloprid | 5.7 g/7.56 L (0.2 oz/2.0 gal) | 17.3 ± 5.8 | 11.3 ± 5.7 | 20.1 ± 6.5 | 24.2 ± 3.6 |
| Oil + acephate | 7.6 L oil + 226.8 g acephate/378 L (2.0 gal + 8 oz/100gal) | 23.6 ± 10.7 1 | 13.2 ± 8.9 | 41.7 ± 19.3* | 15.5 ± 12.5 |
| F = 2.33 | F = 3.89 | F = 2.62 | F = 0.70 | ||
| df = 5, 24 | df = 5, 24 | df = 5, 24 | df = 5, 24 | ||
| P = 0.07 | P = 0.01 | P = 0.05 | P = 0.63 |
↵* Means within a column followed by an asterisk are significantly different from the control (Dunnett’s test) at P < 0.05.