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 Friday, June 10 is expected to give adequate protection until the end of the immigration period on Sunday, June 19 (indicated by yellow highlight).
If using Surround deterrent, rough estimate for decline in plum curculio egglaying is Wednesday, July 6.
Weather data for Sanford ME.  Forecast values begin September 20, 2011
95% McIntosh Petal Fall estimated or reported as:  May 27,  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 27   95% McIntosh
Petal Fall
0 June 8, Wed 58%   (180) 
Sat, May 28   12 0 June 9, Thu 66%   (204) 
Sun, May 29   32 0 June 10, Fri 72%   (221) 
Mon, May 30   56 0 June 11, Sat 74%   (228) 
Tue, May 31   74 0 June 12, Sun 75%   (230) 
Wed, June 1   95 0.07 June 14, Tue 78%   (240) 
Thu, June 2   106 0 June 14, Tue 78%   (240) 
Fri, June 3   113 0 June 15, Wed 82%   (253) 
Sat, June 4   119 0 June 16, Thu 88%   (272) 
Sun, June 5   127 0 June 18, Sat 99%   (306) 
Mon, June 6   141 0 June 18, Sat 99%   (306) 
Tue, June 7   158 0 June 18, Sat 99%   (306) 
Wed, June 8   180 0 June 18, Sat 99%   (306) 
Thu, June 9   204 0.51 June 18, Sat 99%   (306) 
Fri, June 10   221 0 June 22, Wed 100%   (368) 
Sat, June 11   228 0.63 June 22, Wed 100%   (368) 
Sun, June 12   230 0.30 June 23, Thu 100%   (377) 
Mon, June 13   236 0 June 24, Fri 100%   (382) 
Tue, June 14   240 0.04 June 24, Fri 100%   (382) 
Wed, June 15   253 0 June 24, Fri 100%   (382) 
Thu, June 16   272 0 June 24, Fri 100%   (382) 
Fri, June 17   288 0.21 June 24, Fri 100%   (382) 
Sat, June 18   306 0.38 June 24, Fri 100%   (382) 
Sun, June 19   321 0 June 25, Sat 100%   (389)