Research and IPM
Phenology Model Database
Armyworm
Scientific name: Pseudaletia unipuncta
Phenology models
predict timing of events in an organism's development.
For many organisms which cannot internally regulate their own temperature,
development is dependent on temperatures to which they are exposed in the environment.
Information in this database comes from published articles.
It may be used in conjunction with field monitoring and a
degree-day calculator.
Note: Before using a model that was not field tested in your location,
you should test the model
for one or more seasons under your conditions to verify
that it will work for you.
Model 1 of 1
Guppy, J. C. 1969. Some effects of temperature on the immature
stages of the armyworm, Pseudaletia unipuncta (Lepidoptera: Noctuidae), under
controlled conditions. Can. Ent. 101: 1320-1327.
Location of study: Ottawa, Canada (laboratory studies)
Developmental thresholds
| Lower: |
50.0°F | (10.0°C) |
| Upper: | 84.2°F | (29.0°C) |
|---|
| Method of calculation: | not specified (UC IPM recommends Single Sine) |
| Cutoff method: | not specified (UC IPM recommends Vertical) |
Degree-day accumulations required for each stage of development
| Host: Oat foliage | DD (°F) | DD (°C) |
|---|
| Eggs: | 113.4 | 63.0 |
|---|
| Larvae: | 498.6 | 277.0 |
|---|
| Pupae: | 297.0 | 165.0 |
|---|
| Generation time (egg to adult): | 909.0 | 505.0 |
| Pre-egglaying adults: | 126.0 | 70.0 |
| Generation time (egg to egg): | 1035.0 | 575.0 |
|
