Online Phenology Models and Degree-day Calculator
Alfalfa Weevil #1 [alfalfa]
insect model of U WY from: Harcourt 1981

Output from insect degree-day/phenology model program:
	Heat Units and predictions of key events from daily weather data
==============================MODEL INPUTS================================ Model species/general links: Alfalfa Weevil #1 [alfalfa] Type: insect Model source/other links: U WY from: Harcourt 1981 Calculation method: simp avg/grow Lower threshold: 48 degrees Fahrenheit Upper threshold: 110 degrees Fahrenheit Directions for starting/BIOFIX: calendar date Starting/BIOFIX date: 3 1 No ending date, set to: default date 12 31 Model validation status: Northern States (ND, WY) Region of known use: Northern US/S. Canada ==============================EVENTS TABLE================================ 1. 310 DDs after Mar. 1: Beginning egg hatch period 2. 425 DDs after Mar. 1: 2nd instar development 3. 580 DDs after Mar. 1: 4th instar development 4. 850 DDs after Mar. 1: Beginning adult emergence ==============================MODEL OUTPUT================================ Weather station: 1000 none selected mn day max min precip DD48 CUMDD48 event -- --- ----- ----- ------ ---- ------- -------