'Protectant 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 '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 24,  8PM
 rapid growth
Wed, April 25, 4am Sat, Apr 28, 4AM 
Thu,  April 19 0.18 April 25,  12PM
 rapid growth
Wed, April 25, 4am Sat, Apr 28, 12PM 
Fri,  April 20 0 April 25,  12PM
 rapid growth
Wed, April 25, 4am Sat, Apr 28, 12PM 
Sat,  April 21 0 April 25,  10PM
 rapid growth
Wed, April 25, 4am Sat, Apr 28, 10PM 
Sun,  April 22 0 April 26,  11AM
 rapid growth
Wed, April 25, 4am Sun, Apr 29, 11AM 
Mon,  April 23 0 April 27,  9AM
 rapid growth
Wed, April 25, 4am Mon, Apr 30, 9AM 
Tue,  April 24 0 April 28,  1PM
 rapid growth
Fri, April 27, 11am Tue, May 1, 1PM 
Wed,  April 25 0.96 May 1,  11AM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Thu,  April 26 0.2 May 2,  7AM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Fri,  April 27 0.3 May 2,  3PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Sat,  April 28 0.03 May 2,  10PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Sun,  April 29 0.22 May 3,  1PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Mon,  April 30 0.08 May 3,  3PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Tue,  May 1 0 May 3,  6PM
 rapid growth
Thu, May 3, 6pm Sun, May 6, 6PM 
Wed,  May 2 0 May 4,  11AM
 rapid growth
Thu, May 3, 6pm Mon, May 7, 11AM 
Thu,  May 3 0.13 May 5,  6PM
 rapid growth
Fri, May 4, 8pm Tue, May 8, 6PM 
Fri,  May 4 0.19 May 7,  7PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sat,  May 5 0 May 9,  2PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Sun,  May 6 0.39 May 10,  9PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Mon,  May 7 0 May 11,  4PM
 rapid growth
Sat, May 12, 10am Tue, May 15, 10AM 
Tue,  May 8 0 May 13,  9PM
 rapid growth
Sat, May 12, 10am Wed, May 16, 9PM 
Wed,  May 9 0 May 15,  2AM
 rapid growth
Sat, May 12, 10am Fri, May 18, 2AM 
Thu,  May 10 0 May 16,  5AM
 rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Fri,  May 11 0 May 17,  11AM
 rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sat,  May 12 0.23 May 18,  4AM
 rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Sun,  May 13 0 May 18,  2PM
 rapid growth
Sat, May 19, 9am Tue, May 22, 9AM 
Mon,  May 14 0 May 19,  7PM
 rapid growth
Sat, May 19, 9am Tue, May 22, 7PM 
Tue,  May 15 0.98 May 20,  9PM
 rapid growth
Sat, May 19, 9am Wed, May 23, 9PM 
Wed,  May 16 0 May 21,  10PM
 rapid growth
Sat, May 19, 9am Thu, May 24, 10PM 
Thu,  May 17 0 May 23,  6AM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Fri,  May 18 0 May 24,  8AM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Sat,  May 19 0.47 May 24,  7PM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Sun,  May 20 0.14 May 25,  12PM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Mon,  May 21 0 May 26,  9AM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Tue,  May 22 0.09 May 26,  10PM
 rapid growth
Sun, May 27, 11am Wed, May 30, 11AM 
Wed,  May 23 0 May 28,  3AM
 rapid growth
Sun, May 27, 11am Thu, May 31, 3AM 
Thu,  May 24 0 May 29,  1PM
 rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Fri,  May 25 0 May 30,  10AM
 rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Sat,  May 26 0 May 31,  2PM
 rapid growth
Fri, June 1, 11am Mon, Jun 4, 11AM 
Sun,  May 27 0.26 June 1,  10PM
 rapid growth
Fri, June 1, 11am Mon, Jun 4, 10PM
    If application is after deadline, lesions may start showing Jun 13.
Mon,  May 28 0.02 June 2,  12PM
 rapid growth
Fri, June 1, 11am Tue, Jun 5, 12PM
    If application is after deadline, lesions may start showing Jun 14.
Tue,  May 29 0 June 3,  1AM
 rapid growth
Fri, June 1, 11am Wed, Jun 6, 1AM 
Wed,  May 30 0 June 5,  9AM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Wed, June 13, 2PM
Thu,  May 31 0 June 7,  2AM
 rapid growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Wed, June 13, 2PM
Fri,  June 1 0.03 June 8,  6AM
 7 days normal growth

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

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Wed, June 13, 2PM
Sun,  June 3 0 June 10,  6AM
 7 days normal growth

Ascospores depleted before end of protection.  If lesions present, next infection period to spread conidial scab starts:
Wed, June 13, 2PM
Mon,  June 4 0.79 June 11,  6AM
 7 days normal growth

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