Plum curculio protection period

Background Information for this page
Return to radar list for Greenville RI
Adequate plum curculio damage prevention expected by maintaining insecticide residue
 from Petal fall through Tuesday, June 9
(indicated by yellow highlight).
Earliest final spray date that lasts through that end date is: Tuesday, May 26.
Weather data for Greenville RI.  Forecast values begin August 13, 2009
95% McIntosh Petal Fall estimated or reported as:  May 8,  Friday
Full-dose
Plum Curculio (PC) insecticide
Spray 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 8   95% McIntosh
Petal Fall
0 May 20, Wed 29%   (91) 
Sat, May 9   11 0.25 May 21, Thu 36%   (110) 
Sun, May 10   20 0 May 22, Fri 42%   (130) 
Mon, May 11   24 0 May 23, Sat 45%   (140) 
Tue, May 12   28 0.06 May 24, Sun 50%   (153) 
Wed, May 13   35 0 May 25, Mon 55%   (169) 
Thu, May 14   41 0.27 May 26, Tue 56%   (173) 
Fri, May 15   53 0.07 May 27, Wed 57%   (174) 
Sat, May 16   63 0.02 May 28, Thu 57%   (176) 
Sun, May 17   70 0.31 May 29, Fri 59%   (182) 
Mon, May 18   70 0.03 May 31, Sun 68%   (209) 
Tue, May 19   76 0 June 1, Mon 70%   (216) 
Wed, May 20   91 0 June 2, Tue 75%   (230) 
Thu, May 21   110 0 June 3, Wed 78%   (241) 
Fri, May 22   130 0 June 4, Thu 82%   (252) 
Sat, May 23   140 0.07 June 4, Thu 82%   (252) 
Sun, May 24   153 0.65 June 4, Thu 82%   (252) 
Mon, May 25   169 0.01 June 8, Mon 98%   (302) 
Tue, May 26   173 0 June 9, Tue 100%   (309) 
Wed, May 27   174 0.26 June 9, Tue 100%   (309) 
Thu, May 28   176 0.01 June 9, Tue 100%   (309) 
Fri, May 29   182 0.26 June 9, Tue 100%   (309) 
Sat, May 30   198 0.06 June 12, Fri 100%   (340) 
Sun, May 31   209 0.13 June 12, Fri 100%   (340) 
Mon, June 1   216 0 June 12, Fri 100%   (340) 
Tue, June 2   230 0 June 12, Fri 100%   (340) 
Wed, June 3   241 0.03 June 13, Sat 100%   (356) 
Thu, June 4   252 0.24 June 13, Sat 100%   (356) 
Fri, June 5   260 0.39 June 14, Sun 100%   (367) 
Sat, June 6   271 0.04 June 14, Sun 100%   (367) 
Sun, June 7   288 0 June 14, Sun 100%   (367) 
Mon, June 8   302 0 June 14, Sun 100%   (367) 
Tue, June 9   309 0.36 June 14, Sun 100%   (367)