Plum curculio protection period

Background Information for this page
Return to radar list for Sanford ME
   Need for protection against plum curculio egglaying begins around fruit set. 
    A final plum curculio insecticide application on Monday, May 28 is expected to give adequate protection until the end of the immigration period on Saturday, June 9 (indicated by yellow highlight).
If using Surround deterrent, rough estimate for decline in plum curculio egglaying is Friday, June 22.
Weather data for Sanford ME.  Forecast values begin May 17, 2012
95% McIntosh Petal Fall estimated or reported as:  May 11,  Friday
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
Fri, May 11   95% McIntosh
Petal Fall
0 May 22, Tue 39%   (119) 
Sat, May 12   12 0 May 22, Tue 39%   (119) 
Sun, May 13   25 0 May 23, Wed 43%   (132) 
Mon, May 14   31 0.20 May 24, Thu 46%   (143) 
Tue, May 15   41 0.59 May 25, Fri 49%   (152) 
Wed, May 16   53 0.32 May 28, Mon 59%   (181) 
Thu, May 17   61 0.06 May 29, Tue 62%   (191) 
Fri, May 18   68 0 May 30, Wed 65%   (201) 
Sat, May 19   80 0 May 31, Thu 69%   (212) 
Sun, May 20   94 0 June 2, Sat 76%   (235) 
Mon, May 21   106 0 June 3, Sun 80%   (246) 
Tue, May 22   119 0.41 June 3, Sun 80%   (246) 
Wed, May 23   132 0.16 June 5, Tue 88%   (271) 
Thu, May 24   143 0 June 6, Wed 92%   (283) 
Fri, May 25   152   June 7, Thu 96%   (295) 
Sat, May 26   161   June 8, Fri 100%   (308) 
Sun, May 27   171   June 8, Fri 100%   (308) 
Mon, May 28   181   June 9, Sat 100%   (321) 
Tue, May 29   191   June 10, Sun 100%   (334) 
Wed, May 30   201   June 11, Mon 100%   (347) 
Thu, May 31   212   June 12, Tue 100%   (361) 
Fri, June 1   223   June 13, Wed 100%   (374) 
Sat, June 2   235   June 14, Thu 100%   (388) 
Sun, June 3   246   June 15, Fri 100%   (403) 
Mon, June 4   258   June 16, Sat 100%   (417) 
Tue, June 5   271   June 17, Sun 100%   (432) 
Wed, June 6   283   June 18, Mon 100%   (447) 
Thu, June 7   295   June 19, Tue 100%   (462) 
Fri, June 8   308   June 20, Wed 100%   (478) 
Sat, June 9   321   June 21, Thu 100%   (493)