Mean number of aphids on crape myrtle from treatment date of August 24 until September 30,1987
| Treatment | Aug 24 NSy | Sept 2** | Sept 9** | Sept 16** | Sept 21** | Sept 30* |
|---|---|---|---|---|---|---|
| 1x, 3:1 | 1510±343z | 10±7 | 3±3 | 18±8 | ±52±14 | 199±48 |
| 1x, 4:1 | 1271±293 | 7±7 | 3±1 | 33±12 | 47±13 | 187±31 |
| 2x, 3:1 | 1427±380 | 1±1 | 4±3 | 20±8 | 30±6 | 213±38 |
| 2x, 4:1 | 1580+387 | 31±23 | 264±261 | 44±21 | 49±15 | 218±39 |
| 3x, 3:1 | 1399±192 | 1±1 | <1±<1 | 10±5 | 26±5 | 176±40 |
| 3x, 4:1 | 1883±321 | <1±<1 | <1±<1 | 20±5 | 31±7 | 163±30 |
| Control | 1867±509 | 380±175 | 267±85 | 155±35 | 142±28 | 442±83 |
↵y NS, *, and ** indicate no significance and significance at the 0.05 and 0.01 level, respectively, when comparing control with each of the treatments as performed by the Dunnett’s One-tailed T test.
z ± standard error