degree day Flashcards
1
Q
what is the degree day model
A
uses the actual observed temperatures in a given year to track and predict insect development/life cycles and pest pressure with greater accuracy over traditional methods
2
Q
why do we use degree days
A
- cause insects growth and life cycles are affected by their surrounding temperature
- using the degree days (a measure of temperature over time), life cycles are predicted
3
Q
true/false insects have threshold/ideal temperatures for growth
A
true
4
Q
What are the two methods for calculating Degree days
A
- area under the curve
- sine wave method
5
Q
what is the eqaution to calculate DD
A
6
Q
true/false after death, body temperature drops to surrounding temperature
A
true
7
Q
describe how to do the area under the curve method
A
- Divide it into 2 triangles and 2 rectangles
- Calculate area of each
- Remember to change the time (on the x-axis) to amount of day (0.5 days)
- Add up all the areas
8
Q
A
