Strobilurin fungicide Respray Dates for Scab Suppression

Background Information for this page
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Weather data for Easthampton MA.  Forecast values begin September 18, 2018
Final primary scab infection period starts and ascospores depleted on: Monday,  June 4, 2AM.
Full-dose
STROBILURIN fungicide
(Flint, Sovran, Pristine)
SPRAY DATE
6am application time assumed
Inches Rain END of STROBILURIN FUNGICIDE
PROTECTION

& limiting factor
DEADLINE for next
Pre-Infection Application

This is the start time for the next infection period that has rain after fungicide depletion time.
72-hour Deadline for post-infection fungicide to reach back to start time of subsequent infection period (1 col. to left), or back to depletion time of previous fungicide spray (2 cols. to left), whichever is later.  Assumes no scab resistance.
Wed,  April 18 0 Apr 24,  6 AM
6 days normal growth
Wed, April 25, 4am Sat, Apr 28, 4AM 
Thu,  April 19 0.18 Apr 24,  9 PM
rapid growth
Wed, April 25, 4am Sat, Apr 28, 4AM 
Fri,  April 20 0 Apr 24,  9 PM
rapid growth
Wed, April 25, 4am Sat, Apr 28, 4AM 
Sat,  April 21 0 Apr 25,  12 PM
rapid growth
Wed, April 25, 4am Sat, Apr 28, 12PM 
Sun,  April 22 0 Apr 26,  12 AM
rapid growth
Wed, April 25, 4am Sun, Apr 29, 12AM 
Mon,  April 23 0 Apr 26,  3 PM
rapid growth
Wed, April 25, 4am Sun, Apr 29, 3PM 
Tue,  April 24 0 Apr 28,  12 AM
rapid growth
Fri, April 27, 11am Tue, May 1, 12AM 
Wed,  April 25 0.96 Apr 29,  4 AM
rapid growth
Fri, April 27, 11am Wed, May 2, 4AM 
Thu,  April 26 0.2 May 1,  6 PM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Fri,  April 27 0.3 May 2,  11 AM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Sat,  April 28 0.03 May 2,  5 PM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Sun,  April 29 0.22 May 3,  8 AM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Mon,  April 30 0.08 May 3,  11 AM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Tue,  May 1 0 May 3,  1 PM
rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Wed,  May 2 0 May 4,  3 AM
rapid growth
Thu, May 3, 6pm Mon, May 7, 3AM 
Thu,  May 3 0.13 May 5,  11 AM
rapid growth
Fri, May 4, 8pm Tue, May 8, 11AM 
Fri,  May 4 0.19 May 7,  10 AM
rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sat,  May 5 0 May 9,  3 AM
rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sun,  May 6 0.39 May 10,  11 AM
rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Mon,  May 7 0 May 11,  2 AM
rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Tue,  May 8 0 May 12,  1 PM
rapid growth
Sat, May 12, 10am Tue, May 15, 1PM
    If application is after deadline, lesions may start showing May 24.
Wed,  May 9 0 May 14,  2 PM
rapid growth
Sat, May 12, 10am Thu, May 17, 2PM 
Thu,  May 10 0 May 15,  2 PM
rapid growth
Sat, May 12, 10am Fri, May 18, 2PM 
Fri,  May 11 0 May 16,  5 PM
rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sat,  May 12 0.23 May 17,  4 PM
rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sun,  May 13 0 May 17,  9 PM
rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Mon,  May 14 0 May 18,  2 PM
rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Tue,  May 15 0.98 May 20,  10 AM
rapid growth
Sat, May 19, 9am Wed, May 23, 10AM 
Wed,  May 16 0 May 21,  11 AM
rapid growth
Sat, May 19, 9am Thu, May 24, 11AM 
Thu,  May 17 0 May 22,  10 AM
rapid growth
Sat, May 19, 9am Fri, May 25, 10AM 
Fri,  May 18 0 May 23,  4 PM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Sat,  May 19 0.47 May 24,  9 AM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Sun,  May 20 0.14 May 24,  7 PM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Mon,  May 21 0 May 25,  7 PM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Tue,  May 22 0.09 May 26,  1 PM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Wed,  May 23 0 May 27,  12 AM
rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Thu,  May 24 0 May 28,  10 PM
rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Fri,  May 25 0 May 29,  6 PM
rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Sat,  May 26 0 May 30,  8 PM
rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Sun,  May 27 0.26 Jun 1,  10 AM
rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Mon,  May 28 0.02 Jun 1,  10 PM
rapid growth
Fri, June 1, 11am Mon, Jun 4, 10PM
    If application is after deadline, lesions may start showing Jun 13.
Tue,  May 29 0 Jun 2,  12 PM
rapid growth
Fri, June 1, 11am Tue, Jun 5, 12PM
    If application is after deadline, lesions may start showing Jun 14.
Wed,  May 30 0 Jun 3,  5 PM
rapid growth
Fri, June 1, 11am Wed, Jun 6, 5PM 
Thu,  May 31 0 Jun 5,  10 PM
rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
  June 13, 2PM
Fri,  June 1 0.03 Jun 7,  6 AM
6 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
  June 13, 2PM
Sat,  June 2 0 Jun 8,  6 AM
6 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
  June 13, 2PM
Sun,  June 3 0 Jun 9,  6 AM
6 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
  June 13, 2PM
Mon,  June 4 0.79 Jun 10,  6 AM
6 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
  June 13, 2PM