Plum curculio protection period

Background Information for this page
Return to radar list for Hancock NH
   Need for protection against plum curculio egglaying begins around fruit set. 
    A final plum curculio insecticide application on Sunday, May 20 is expected to give adequate protection until the end of the immigration period on Sunday, June 3 (indicated by yellow highlight).
If using Surround deterrent, rough estimate for decline in plum curculio egglaying is Wednesday, June 13.
Weather data for Hancock NH.  Forecast values begin May 17, 2012
95% McIntosh Petal Fall estimated or reported as:  May 2,  Wednesday
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
Wed, May 2   95% McIntosh
Petal Fall
0 May 12, Sat 18%   (56) 
Thu, May 3   1 0.20 May 13, Sun 23%   (72) 
Fri, May 4   4 0.17 May 14, Mon 27%   (82) 
Sat, May 5   10 0.06 May 14, Mon 27%   (82) 
Sun, May 6   15 0 May 15, Tue 31%   (94) 
Mon, May 7   24 0 May 15, Tue 31%   (94) 
Tue, May 8   26 0.75 May 15, Tue 31%   (94) 
Wed, May 9   34 0.09 May 16, Wed 35%   (109) 
Thu, May 10   39 0.63 May 16, Wed 35%   (109) 
Fri, May 11   44 0 May 22, Tue 58%   (180) 
Sat, May 12   56 0 May 22, Tue 58%   (180) 
Sun, May 13   72 0 May 23, Wed 63%   (194) 
Mon, May 14   82 0.52 May 24, Thu 67%   (207) 
Tue, May 15   94 0.55 May 27, Sun 77%   (238) 
Wed, May 16   109 0.38 May 29, Tue 84%   (259) 
Thu, May 17   116 0.03 May 30, Wed 87%   (269) 
Fri, May 18   124 0 May 31, Thu 91%   (281) 
Sat, May 19   136 0 June 2, Sat 99%   (304) 
Sun, May 20   151 0 June 3, Sun 100%   (317) 
Mon, May 21   165 0 June 4, Mon 100%   (329) 
Tue, May 22   180 0.28 June 4, Mon 100%   (329) 
Wed, May 23   194 0.16 June 6, Wed 100%   (354) 
Thu, May 24   207 0 June 7, Thu 100%   (367) 
Fri, May 25   218   June 8, Fri 100%   (380) 
Sat, May 26   228   June 8, Fri 100%   (380) 
Sun, May 27   238   June 8, Fri 100%   (380) 
Mon, May 28   248   June 9, Sat 100%   (394) 
Tue, May 29   259   June 10, Sun 100%   (407) 
Wed, May 30   269   June 11, Mon 100%   (421) 
Thu, May 31   281   June 12, Tue 100%   (435) 
Fri, June 1   292   June 13, Wed 100%   (449) 
Sat, June 2   304   June 14, Thu 100%   (464) 
Sun, June 3   317   June 15, Fri 100%   (478)