Table 2.
Number of larvae, pupae, and adults of P. interpunctella found inside the packages of energy bars after 21 days and 42 days of infestation, and the extent of damage to packages and energy bars.
| Trt | Egg Density | Mean ± SE a | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Larvae | Number of Pupae | Number of Adults | Number of Holes | Hole Size (mm) | Damage Score | ||||||||
| 21 Days | 42 Days | 21 Days | 42 Days | 21 Days | 42 Days | 21 Days | 42 Days | 21 Days | 42 Days | 21 Days | 42 Days | ||
| Test A | 50 | 2.4 ± 2.4 | 0.0 ± 0.0 | --- b | 0.0 ± 0.0 | --- b | 0.0 ± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | 0.3 ± 0.3 | 0.0 ± 0.0 | 0.4 ± 0.4 | 0.0 ± 0.0 |
| Test B | 4.0 ± 3.1 | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | 0.4 ± 0.2 | 0.0 ± 0.0 | 0.4 ± 0.3 | 0.0 ± 0.0 | 0.6 ± 0.4 | 0.0 ± 0.0 | |
| Test C | 0.2 ± 0.2 | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | 0.3 ± 0.3 | 0.0 ± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | |
| Test A | 200 | 0.0 ± 0.0 | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 |
| Test B | 0.0 ± 0.0 | 0.4 ± 0.4 | --- | 0.8 ± 0.8 | --- | 1.0 ± 1.0 | 0.0 ± 0.0 | 0.4 ± 0.4 | 0 .0± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | 0.8 ± 0.8 | |
| Test C | 0.0 ± 0.0 | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | --- | 4.4 ± 3.0 | 0.0 ± 0.0 | 0.6 ± 0.4 | 0.0 ± 0.0 | 0.6 ± 0.4 | 0.0 ± 0.0 | 1.2 ± 0.8 | |
| Test A | 400 | 0.0 ± 0.0 | 3.2 ± 3.2 | --- | 1.0 ± 1.0 | --- | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | 0.2 ± 0.2 | 0.0 ± 0.0 | 0.8 ± 0.8 |
| Test B | 0.0 ± 0.0 | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | --- | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | |
| Test C | 12.8 ± 4.6 | 0.0 ± 0.0 | --- | 2.6 ± 1.1 | --- | 2.4 ± 1.2 | 1.0 ± 0.5 | 0.6 ± 0.2 | 0.2 ± 0.1 | 0.8 ± 0.3 | 1.2 ± 0.4 | 1.8 ± 0.8 | |
a A total of five packages was exposed at each treatment and instars densities; b No pupae or adults were found at 21 days; only larvae were found at 21 days.