Pear psylla, Cacopsylla pyricola [pear] insect model
of WSU model
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: Pear psylla, Cacopsylla pyricola [pear]
Type: insect
Model source/other links: WSU model
Calculation method: single sine
Lower threshold: 40.8 degrees Fahrenheit
Upper threshold: 84 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: developed for WSU tree fruit Extension, used with permission
Region of known use: data collected in WA
==============================EVENTS TABLE================================
1. 35 DDs after Jan 1: First (5%) OW adult emergence and egg laying
2. 113 DDs after Jan 1: Peak (50%) OW adult emergence and egg laying
3. 285 DDs after Jan 1: First (5%) 1st gen. early nymphs present
4. 426 DDs after Jan 1: Peak (50%) 1st gen. early nymphs present
5. 683 DDs after Jan 1: Peak (50%) 1st gen. late nymphs present
6. 830 DDs after Jan 1: First (5%) 1st gen. adult emergence and egg laying
7. 1731 DDs after Jan 1: Peak (50%) 2nd gen. late nymphs present
8. 2205 DDs after Jan 1: First (5%) 2nd gen. adult emergence and egg laying
9. 2677 DDs after Jan 1: Peak (50%) 2nd gen. adult emergence and egg laying
10. 3406 DDs after Jan 1: Peak (50%) 3rd gen. late nymphs present
==============================MODEL OUTPUT================================
Weather station: 1000 none selected
mn day max min precip DD40 CUMDD40 event
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