Post-treatment monthly meansz of numbers of RGLP nymphs/leaf between November 1999 and September 2000.
| Treatment | 11/99 | 12/99 | 1/00 | 2/00 | 3/00 | 4/00 | 5/00 | 6/00 | 7/00 | 8/00 | 9/00 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Imidaclopridy | 7.13 a | 3.93 a | 5.35 a | 0.91 a | 4.64 a | 2.38 a | 1.32 a | 2.70 a | 17.4 a | 0.58 a | 1.63 a |
| Combinationx | 4.99 a | 6.30 a | 8.67 ab | 3.38 bc | 4.55 a | 3.25 a | 4.04 a | 9.37 a | 21.4 a | 3.13 a | 3.84 ab |
| Oxydemeton-methylw | 15.6 b | 11.22 b | 10.3 bc | 3.27 bc | 6.70 a | 5.37 b | 8.10 b | 19.9 b | 21.2 a | 0.49 a | 7.71 b |
| Untreated | 22.1 b | 15.55 b | 15.82 c | 4.44 c | 4.69 a | 2.64 a | 4.36 a | 9.75 a | 20.3 a | 2.60 a | 7.41 b |
↵z Means followed by the same letter are not significantly different at the 5% level (Fisher’s PLSD).
↵y Imicide® 3 mL 10% active ingredient per 5-cm trunk diameter.
↵x Imicide® 2mL 10% active ingredient and Injecticide® 3 mL 50% active ingredient per 5-cm trunk diameter.
↵w Injecticide® 3mL 50% active ingredient per 5-cm trunk diameter.