Online Phenology Models and Degree-day Calculator
immatureadult
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 -- --- ----- ----- ------ ---- ------- -------