Flyspeck prevention, Full-dose Captan or Ziram: July spray dates

Background Information for this page
Return to radar list for Greenville RI
    Continuous protection from June 6 until 30 days before harvest is recommended.  Flyspeck infections that begin before August 21 are likely to become visible around September 20.  Infections that begin before September 5 are likely to become visible around October 20.  But warm wet weather in September can accelerate flyspeck development resulting in earlier dates of flyspeck appearance before harvest.
     Application a strobilurin or Topsin M fungicide within 50 wet hours after the 'Protection end date' of the previous fungicide application may provide postinfection control.
Weather data for Greenville RI.  Forecast values begin May 22, 2012
Inches Rain Spray Date
Estimates assume that fungicide was applied before rain on spray date
Protection End Date
for full-dose
Captan or Ziram
(deadline for postinfection strobilurin or Topsin M)
Date flyspeck infections could appear
(Left side = estimated flyspeck show date if weather beyond end of forecast range is in top 20% of years for both temperature and wet hours.  An "x" means there is no need for this scenario because show date is within forecast range.
    
Right side = estimated flyspeck show date for small, open canopy, low-risk trees.)
Sun, July 1 July 13  (Jul. 17) (Aug. 3) August 10 (Aug 24)
Mon, July 2 July 14  (Jul. 18) (Aug. 4) August 11 (Aug 25)
Tue, July 3 July 15  (Jul. 19) (Aug. 5) August 12 (Aug 26)
Wed, July 4 July 16  (Jul. 20) (Aug. 6) August 12 (Aug 27)
Thu, July 5 July 17  (Jul. 21) (Aug. 7) August 13 (Aug 28)
Fri, July 6 July 18  (Jul. 22) (Aug. 8) August 14 (Aug 29)
  Sat, July 7 July 19  (Jul. 23) (Aug. 9) August 15 (Aug 30)
Sun, July 8 July 20  (Jul. 24) (Aug. 10) August 16 (Aug 31)
Mon, July 9 July 21  (Jul. 25) (Aug. 11) August 17 (Sep 1)
Tue, July 10 July 22  (Jul. 26) (Aug. 12) August 18 (Sep 2)
Wed, July 11 July 23  (Jul. 27) (Aug. 13) August 19 (Sep 3)
Thu, July 12 July 24  (Jul. 28) (Aug. 14) August 20 (Sep 4)
Fri, July 13 July 25  (Jul. 29) (Aug. 15) August 21 (Sep 5)
  Sat, July 14 July 26  (Jul. 30) (Aug. 15) August 22 (Sep 6)
Sun, July 15 July 27  (Jul. 31) (Aug. 16) August 23 (Sep 7)
Mon, July 16 July 28  (Aug. 1) (Aug. 17) August 24 (Sep 8)
Tue, July 17 July 29  (Aug. 2) (Aug. 18) August 25 (Sep 9)
Wed, July 18 July 30  (Aug. 3) (Aug. 19) August 26 (Sep 11)
Thu, July 19 July 31  (Aug. 4) (Aug. 20) August 27 (Sep 12)
Fri, July 20 August 1  (Aug. 5) (Aug. 21) August 28 (Sep 13)
  Sat, July 21 August 2  (Aug. 6) (Aug. 22) August 29 (Sep 14)
Sun, July 22 August 3  (Aug. 7) (Aug. 23) August 30 (Sep 15)
Mon, July 23 August 4  (Aug. 8) (Aug. 24) August 31 (Sep 17)
Tue, July 24 August 5  (Aug. 9) (Aug. 25) September 1 (Sep 18)
Wed, July 25 August 5  (Aug. 9) (Aug. 25) September 1 (Sep 18)
Thu, July 26 August 6  (Aug. 10) (Aug. 26) September 2 (Sep 19)
Fri, July 27 August 7  (Aug. 11) (Aug. 27) September 3 (Sep 21)
  Sat, July 28 August 8  (Aug. 12) (Aug. 28) September 5 (Sep 22)
Sun, July 29 August 9  (Aug. 13) (Aug. 29) September 6 (Sep 24)
Mon, July 30 August 10  (Aug. 14) (Aug. 30) September 7 (Sep 25)
Tue, July 31 August 11  (Aug. 15) (Aug. 31) September 8 (Sep 27)