Plum curculio protection period

Background Information for this page
Return to radar list for Middletown RI
   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 Tuesday, June 14 (indicated by yellow highlight).
If using Surround deterrent, rough estimate for decline in plum curculio egglaying is Friday, July 1.
Weather data for Middletown RI.  Forecast values begin September 20, 2011
95% McIntosh Petal Fall estimated or reported as:  May 23,  Monday
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
Mon, May 23   95% McIntosh
Petal Fall
0.09 June 4, Sat 56%   (172) 
Tue, May 24   12 0.32 June 5, Sun 58%   (179) 
Wed, May 25   27 0 June 6, Mon 62%   (192) 
Thu, May 26   37 0 June 7, Tue 69%   (212) 
Fri, May 27   52 0 June 8, Wed 77%   (238) 
Sat, May 28   68 0 June 9, Thu 84%   (260) 
Sun, May 29   83 0 June 10, Fri 91%   (279) 
Mon, May 30   103 0 June 11, Sat 94%   (288) 
Tue, May 31   123 0 June 12, Sun 96%   (296) 
Wed, June 1   138 0.18 June 12, Sun 96%   (296) 
Thu, June 2   153 0 June 12, Sun 96%   (296) 
Fri, June 3   163 0 June 12, Sun 96%   (296) 
Sat, June 4   172 0 June 12, Sun 96%   (296) 
Sun, June 5   179 0.02 June 12, Sun 96%   (296) 
Mon, June 6   192 0 June 12, Sun 96%   (296) 
Tue, June 7   212 0 June 12, Sun 96%   (296) 
Wed, June 8   238 0.06 June 12, Sun 96%   (296) 
Thu, June 9   260 0.51 June 12, Sun 96%   (296) 
Fri, June 10   279 0 June 14, Tue 100%   (311) 
Sat, June 11   288 0.68 June 14, Tue 100%   (311) 
Sun, June 12   296 1.20 June 17, Fri 100%   (356) 
Mon, June 13   304 0.05 June 23, Thu 100%   (458) 
Tue, June 14   311 0.07 June 23, Thu 100%   (458)