Output from uspest.org/wea insect degree-day/phenology model program:
Heat Units and predictions of key events from daily weather data
==============================MODEL INPUTS================================
Model species/general links: threecornered alfalfa hopper [legumes, grapes]
Type: insect
Model source/other links: OSU OIPMC model analysis
Calculation method: single sine
Lower threshold: 52 degrees Fahrenheit
Upper threshold: 100 degrees Fahrenheit
Directions for starting/BIOFIX: calendar date
Starting/BIOFIX date: 1 1
No ending date, set to: default date 12 31
Model validation status: under development - new pest of winegrapes
Region of known use: data collected in TX, ARK, LA, SC, KY, GA, CA
==============================EVENTS TABLE================================
1. 450 DDs after Jan 1: OW adult first oviposition
2. 780 DDs after Jan 1: OW adult peak OV
3. 1180 DDs after Jan 1: F1 late instar nymphs
4. 1430 DDs after Jan 1: First F1 adults
5. 2180 DDs after Jan 1: F1 peak adults, also F2 young nymphs
6. 2580 DDs after Jan 1: F2 late instar nymphs
7. 2830 DDs after Jan 1: First F2 adults
8. 3580 DDs after Jan 1: F2 peak adults, also F3 young nymphs (warmer climates only)
9. 4230 DDs after Jan 1: First F3 adults (warmer climates only)
==============================MODEL OUTPUT================================
Weather station: 1000 none selected
mn day max min precip DD52 CUMDD52 event
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