Table 5.
Mean ± SE number of live larvae of P. interpunctella at 21 days and number of adults that emerged from eggs at 42 days on untreated and insecticide-treated commodities
| Observation time (days) | Commodity | Treatment | Number of larvae | Number of adults |
|---|---|---|---|---|
| 21 | Wheat | Dry control | 23.8 ± 8.0a | |
| Wet control | 9.4 ± 3.5a | |||
| Dry spinosad | 1.0 ± 0.6b | |||
| Liquid spinosad I | 0.0 ± 0.0b | |||
| Liquid spinosad II | 0.0 ± 0.0b | |||
| C-methyl + D | 0.0 ± 0.0b | |||
| Maize | Dry control | 11.0 ± 2.1a | ||
| Wet control | 11.4 ± 1.7a | |||
| Dry spinosad | 0.2 ± 0.2b | |||
| Liquid spinosad I | 0.2 ± 0.2b | |||
| Liquid spinosad II | 0.4 ± 0.2b | |||
| 42 | Wheat | Dry control | 12.8 ± 7.4a | |
| Wet control | 6.0 ± 3.2a | |||
| Dry spinosad | 8.2 ± 3.8a | |||
| Liquid spinosad I | 0.0 ± 0.0b | |||
| Liquid spinosad II | 0.0 ± 0.0b | |||
| C-methyl + D | 0.0 ± 0.0b | |||
| Maize | Dry control | 0.6 ± 0.6a | ||
| Wet control | 0.8 ± 0.8b | |||
| Dry spinosad | 0.0 ± 0.0b | |||
| Liquid spinosad I | 0.0 ± 0.0b | |||
| Liquid spinosad II | 0.0 ± 0.0b |
Each mean is based on n = 5
For each species and commodity, means followed by different letters are significantly different (P < 0.05; LSMEANS test)
C-methyl + D, Chlorpyrifos-methyl + deltamethrin