Codling Moth BIOFIX Model: Degree-Day Timing

Farmer implementing IPM, wants to understand codling moth BIOFIX model (temperature-based treatment timing).

How BIOFIX Works

• Biofix date = first consistent moth catch in pheromone traps (or predicted by model).
• Degree-days (DD) accumulated daily: (Max temp + Min temp)/2 - Lower threshold (50°F for codling moth).
• Key DD targets (from research tables): Egg hatch, larval entry, spray windows.

Local Help Essential

Degree-day tracking usually done by Cooperative Extension or university researchers.

• Provide city/state → I'll find local contact.
• Outside US → contact nearest ag university/advisor.

Model improves spray timing, reduces applications. But needs local calibration.