codling moth/ Vancouver Wa
from the website http://das.wsu.edu/
From the Vancouver, Wa research station for codling moth here is the what I get:
" Last Updated: 04/23/2012
Degree days since January 1st. = 138
CM emergence is expected in 7 days (=175 DD). Historically first moth is caught between 121 and 220 DD (average 175 DD). Studies show the 175 DD figure used as a biofix does not affect model accuracy compared to using a biofix. "
Pheromone traps should be in place before first apple blossoms open or by 100 DD whichever comes first. If using mating disruption, dispensers should be in the orchard before the first apple blossoms open and use a 10x lure for pheromone traps."
2% of CM adults should have emerged. No eggs have hatched, but they should start being laid 225 DD (50 DD after biofix). "
If you are going to use an insecticide that kills CM eggs (Intrepid, Esteem, Rimon), it should be applied between 225-325 DD (50-150 DD after biofix). Using an ovicide at this time allows you to delay the first larvicide application to 525 DD (350 DD after biofix). If you are planning to use an insecticide at an egg hatch timing then a repeat application of the ovicide is not necessary. If an ovicide only control program is followed (not recommended) then two additional applications at a re-treatment interval of 14 days should be used."