Table 1.
Efficacy of insecticides against pine needle scale crawlers and settled nymphs in Central Ohio.
| Pesticide and lb or % AI/100 gal 0 = g Ai/i | Mean percent mortality Davs posttreatment | |||
|---|---|---|---|---|
| 7 | 14 | 14 | ||
| 1986 | 1987 | 1988 | ||
| Dursban 4 E | 1.0 (1.2) | 40 b | — | 87 b |
| Orthene 75 SP | 0.5 (0.6) | 21 cd | 31 d | — |
| Sevin 80 S | 1.0 (1.2) | 34 be | — | 91 b |
| Safer Soap | 2% | 97 a | 95 a | 99 a |
| Murphy Soap | 1% | — | 52 c | — |
| Murphy Soap | 2% | — | 84 b | — |
| Sunspray 6 E | 2% | 92 a | — | — |
| Pestroy 8 E | 1.0 (1.2) | — | 98 a | — |
| Water Check | — | 25 bed | 16 e | 14 c |
Means in a column followed by the same letter are not significantly different, Duncan’s New Multiple Range Test (DNMRT) (P = 0.05). Data were transformed to arcsin
before ANOVA.
