'Protectant fungicide' Respray Dates for Scab Suppression

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Weather data for Easthampton MA.  Forecast values begin May 25, 2018
Full-dose 'Protectant' fungicide
(captan, mancozeb, SDHI, Syllit)
SPRAY DATE
6am application time assumed
Inches Rain END of Protectant fungicide
residue 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 April 26,  3AM
 slow growth
Wed, April 25, 4am Sun, Apr 29, 3AM 
Thu,  April 19 0.18 April 26,  6AM
 7 days normal growth
Wed, April 25, 4am Sun, Apr 29, 6AM 
Fri,  April 20 0 April 26,  6AM
 rain removal
Wed, April 25, 4am Sun, Apr 29, 6AM 
Sat,  April 21 0 April 26,  6AM
 rain removal
Wed, April 25, 4am Sun, Apr 29, 6AM 
Sun,  April 22 0 April 28,  6AM
 rain removal
Fri, April 27, 11am Tue, May 1, 6AM 
Mon,  April 23 0 April 30,  6AM
 7 days normal growth
Sat, April 28, 11pm Thu, May 3, 6AM 
Tue,  April 24 0 May 1,  6AM
 7 days normal growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Wed,  April 25 0.96 May 2,  6AM
 7 days normal growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Thu,  April 26 0.2 May 3,  3AM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Fri,  April 27 0.3 May 3,  3PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Sat,  April 28 0.03 May 3,  10PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 10PM 
Sun,  April 29 0.22 May 4,  12PM
 rapid growth
Thu, May 3, 6pm Mon, May 7, 12PM 
Mon,  April 30 0.08 May 4,  5PM
 rapid growth
Thu, May 3, 6pm Mon, May 7, 5PM 
Tue,  May 1 0 May 4,  7PM
 rapid growth
Thu, May 3, 6pm Mon, May 7, 7PM 
Wed,  May 2 0 May 5,  4PM
 rapid growth
Fri, May 4, 8pm Tue, May 8, 4PM 
Thu,  May 3 0.13 May 7,  4PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Fri,  May 4 0.19 May 9,  3PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sat,  May 5 0 May 11,  11AM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sun,  May 6 0.39 May 13,  6AM
 7 days normal growth
Sat, May 12, 10am Wed, May 16, 6AM 
Mon,  May 7 0 May 14,  6AM
 7 days normal growth
Sat, May 12, 10am Thu, May 17, 6AM 
Tue,  May 8 0 May 15,  6AM
 7 days normal growth
Sat, May 12, 10am Fri, May 18, 6AM 
Wed,  May 9 0 May 16,  6AM
 7 days normal growth
Sat, May 19, 9am Tue, May 22, 9AM 
Thu,  May 10 0 May 16,  6AM
 rain removal
Sat, May 19, 9am Tue, May 22, 9AM 
Fri,  May 11 0 May 18,  6AM
 7 days normal growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sat,  May 12 0.23 May 19,  6AM
 7 days normal growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sun,  May 13 0 May 20,  6AM
 7 days normal growth
Sat, May 19, 9am Wed, May 23, 6AM 
Mon,  May 14 0 May 21,  6AM
 7 days normal growth
Sat, May 19, 9am Thu, May 24, 6AM 
Tue,  May 15 0.98 May 22,  6AM
 7 days normal growth
Sat, May 19, 9am Fri, May 25, 6AM 
Wed,  May 16 0 May 23,  6AM
 7 days normal growth
Sat, May 26, 7pm Tue, May 29, 7PM 
Thu,  May 17 0 May 24,  6AM
 7 days normal growth
Sat, May 26, 7pm Tue, May 29, 7PM 
Fri,  May 18 0 May 25,  6AM
 7 days normal growth
Sat, May 26, 7pm Tue, May 29, 7PM 
Sat,  May 19 0.47 May 26,  1AM
 rapid growth
Sat, May 26, 7pm Tue, May 29, 7PM 
Sun,  May 20 0.14 May 26,  12PM
 rapid growth
Sat, May 26, 7pm Tue, May 29, 7PM 
Mon,  May 21 0 May 27,  11AM
 rapid growth
Sat, May 26, 7pm Wed, May 30, 11AM 
Tue,  May 22 0.09 May 28,  7PM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
 
Wed,  May 23 0 May 29,  1PM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Thu,  May 24 0 May 30,  3PM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Fri,  May 25 0 May 31,  3PM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Sat,  May 26 0.06 June 1,  7PM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Sun,  May 27 0.47 June 3,  6AM
 7 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Mon,  May 28 0.22 June 4,  6AM
 7 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Beyond forecast range
Tue,  May 29 0 beyond forecast    
Wed,  May 30 0 beyond forecast  
Thu,  May 31 0 beyond forecast