Plum curculio protection period

Background Information for this page
Return to radar list for Greenville RI
   Need for protection against plum curculio egglaying begins around fruit set. 
    A final plum curculio insecticide application on Sunday, May 26 is expected to give adequate protection until the end of the immigration period on Saturday, June 8 (indicated by yellow highlight).
If using Surround deterrent, rough estimate for decline in plum curculio egglaying is Saturday, June 22.
Weather data for Greenville RI.  Forecast values begin May 24, 2013
95% McIntosh Petal Fall estimated or reported as:  May 11,  Saturday
Full-dose
Plum Curculio insecticide
application date
PC degree days accumulated on spray date Inches
Rain
Estimated
end of protection
Percent of
PC control period
(& PC degree days)
completed by end of protection
Sat, May 11   95% McIntosh
Petal Fall
0.57 May 23, Thu 36%   (112) 
Sun, May 12   10 0.05 May 24, Fri 40%   (123) 
Mon, May 13   11 0 May 24, Fri 40%   (123) 
Tue, May 14   14 0 May 24, Fri 40%   (123) 
Wed, May 15   18 0.07 May 24, Fri 40%   (123) 
Thu, May 16   33 0 May 24, Fri 40%   (123) 
Fri, May 17   41 0 May 24, Fri 40%   (123) 
Sat, May 18   50 0 May 24, Fri 40%   (123) 
Sun, May 19   57 0.15 May 24, Fri 40%   (123) 
Mon, May 20   73 0.06 May 24, Fri 40%   (123) 
Tue, May 21   87 0.35 May 24, Fri 40%   (123) 
Wed, May 22   97 0.05 May 25, Sat 40%   (123) 
Thu, May 23   112 0.20 May 25, Sat 40%   (123) 
Fri, May 24   123 1.68 May 25, Sat 40%   (123) 
Sat, May 25   123 0.36 June 7, Fri 96%   (296) 
Sun, May 26   126 0 June 8, Sat 100%   (310) 
Mon, May 27   134 0 June 9, Sun 100%   (324) 
Tue, May 28   145 0 June 11, Tue 100%   (354) 
Wed, May 29   158 0 June 12, Wed 100%   (369) 
Thu, May 30   177 0 June 13, Thu 100%   (384) 
Fri, May 31   197 0 June 14, Fri 100%   (399) 
Sat, June 1   214   June 14, Fri 100%   (399) 
Sun, June 2   228   June 14, Fri 100%   (399) 
Mon, June 3   241   June 14, Fri 100%   (399) 
Tue, June 4   254   June 16, Sun 100%   (431) 
Wed, June 5   268   June 17, Mon 100%   (447) 
Thu, June 6   282   June 18, Tue 100%   (464) 
Fri, June 7   296   June 19, Wed 100%   (480) 
Sat, June 8   310   June 20, Thu 100%   (497)