Online Phenology Models and Degree-day Calculator
eggsimmaturedamageadult
cabbage maggot - Delia radicum (L.)
insect model of UC Extension OSU DDs info cards (pdf)


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: cabbage maggot - Delia radicum (L.) Type: insect Model source/other links: UC Extension OSU DDs info cards (pdf) Calculation method: single sine Lower threshold: 39.7 degrees Fahrenheit Upper threshold: 86 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: partly validated Region of known use: Pacific Northwest ==============================EVENTS TABLE================================ 1. 360 DD after Jan 1: initial spring emergence (10%) 2. 601 DD after Jan 1: spring peak emergence (50%) 3. 750 DD after Jan 1: egg-laying notes a) need plants at least 30 days after planting 4. 900 DD after Jan 1: notes b) prefer maturing plants with developing roots, > 7 leaves 5. 1050 DD after Jan 1: notes c) at least 7 days after peak flight 6. 1200 DD after Jan 1: notes d) lasts ca. 5 weeks, mostly during 2 weeks 7. 1521 DD after Jan 1: end of spring flight (95%) 8. 3849 DD after Jan 1: fall flight begins 9. 5160 DD after Jan 1: fall flight ends approx. first frost ==============================MODEL OUTPUT================================ Weather station: 1000 none selected mn day max min precip DD39 CUMDD39 event -- --- ----- ----- ------ ---- ------- -------