Online Phenology Models and Degree-day Calculator
eggsimmaturedamageadult
threecornered alfalfa hopper [legumes, grapes]
insect model of OSU IPPC model analysis


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 IPPC 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 -- --- ----- ----- ------ ---- ------- -------