'Surface fungicide' Respray Dates for Scab Suppression

Background Information for this page
Return to radar list for Greenville RI
Weather data for Greenville RI.  Forecast values begin September 20, 2011
Final primary scab infection period starts and ascospores depleted on: Wednesday,  June 1, 8AM.
Full-dose SURFACE "Contact" fungicide
(captan, mancozeb, Polyram, Syllit)
SPRAY DATE
6am application time assumed
Inches Rain END of SURFACE 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.
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.
Fri,  April 8 0 April 13,  9AM
 rapid growth
Tue, April 12, 11am Sat, Apr 16, 9AM 
Sat,  April 9 0 April 14,  6AM
 rain removal
Sat, April 16, 6pm Tue, Apr 19, 6PM 
Sun,  April 10 0 April 14,  6AM
 rain removal
Sat, April 16, 6pm Tue, Apr 19, 6PM 
Mon,  April 11 0 April 17,  6AM
 rain removal
Sat, April 16, 6pm Wed, Apr 20, 6AM 
Tue,  April 12 0.37 April 17,  1AM
 
Sat, April 16, 6pm Wed, Apr 20, 1AM 
Wed,  April 13 1.38 April 17,  1AM
 rain removal
Sat, April 16, 6pm Wed, Apr 20, 1AM 
Thu,  April 14 0 April 17,  6AM
 rain removal
Sat, April 16, 6pm Wed, Apr 20, 6AM 
Fri,  April 15 0 April 17,  6AM
 rain removal
Sat, April 16, 6pm Wed, Apr 20, 6AM 
Sat,  April 16 0.45 April 19,  10PM
 rain removal
Sun, April 17, 11pm Fri, Apr 22, 10PM 
Sun,  April 17 1.47 April 24,  2PM
 slow growth
Sat, April 23, 5am Wed, Apr 27, 2PM 
Mon,  April 18 0 April 25,  6AM
 7 days normal growth
Wed, April 27, 7pm Sat, Apr 30, 7PM 
Tue,  April 19 0.11 April 26,  6AM
 7 days normal growth
Wed, April 27, 7pm Sat, Apr 30, 7PM 
Wed,  April 20 0.01 April 27,  5AM
 rapid growth
Wed, April 27, 7pm Sat, Apr 30, 7PM 
Thu,  April 21 0 April 27,  10AM
 rapid growth
Wed, April 27, 7pm Sat, Apr 30, 7PM 
Fri,  April 22 0 April 27,  6PM
 rapid growth
Wed, April 27, 7pm Sat, Apr 30, 7PM 
Sat,  April 23 0.61 April 27,  9PM
 rapid growth
Wed, April 27, 7pm Sat, Apr 30, 9PM 
Sun,  April 24 0.05 April 28,  9AM
 rapid growth
Wed, April 27, 7pm Sun, May 1, 9AM 
Mon,  April 25 0 April 29,  11AM
 rapid growth
Wed, May 4, 2pm Sat, May 7, 2PM 
Tue,  April 26 0 April 30,  6AM
 rapid growth
Wed, May 4, 2pm Sat, May 7, 2PM 
Wed,  April 27 0.09 May 2,  12PM
 rapid growth
Wed, May 4, 2pm Sat, May 7, 2PM 
Thu,  April 28 0.51 May 3,  8PM
 rapid growth
Wed, May 4, 2pm Sat, May 7, 2PM 
Fri,  April 29 0.03 May 6,  6AM
 7 days normal growth
Sat, May 7, 2pm Tue, May 10, 2PM 
Sat,  April 30 0 May 7,  6AM
 7 days normal growth
Sat, May 7, 2pm Tue, May 10, 2PM 
Sun,  May 1 0 May 8,  6AM
 7 days normal growth
Sat, May 7, 2pm Wed, May 11, 6AM 
Mon,  May 2 0 May 9,  6AM
 7 days normal growth
Sat, May 7, 2pm Thu, May 12, 6AM 
Tue,  May 3 0 May 10,  6AM
 7 days normal growth
Sat, May 7, 2pm Fri, May 13, 6AM 
Wed,  May 4 0.36 May 11,  6AM
 7 days normal growth
Tue, May 10, 9am Sat, May 14, 6AM 
Thu,  May 5 0.02 May 12,  6AM
 7 days normal growth
Sat, May 14, 8pm Tue, May 17, 8PM 
Fri,  May 6 0 May 13,  6AM
 7 days normal growth
Sat, May 14, 8pm Tue, May 17, 8PM 
Sat,  May 7 0.27 May 14,  6AM
 7 days normal growth
Sat, May 14, 8pm Tue, May 17, 8PM 
Sun,  May 8 0 May 15,  6AM
 7 days normal growth
Sat, May 14, 8pm Wed, May 18, 6AM
    If application is after deadline, lesions may start showing May 27.
Mon,  May 9 0 May 16,  6AM
 7 days normal growth
Sat, May 14, 8pm Thu, May 19, 6AM
    If application is after deadline, lesions may start showing May 28.
Tue,  May 10 0.06 May 17,  6PM
 
Sat, May 14, 8pm Fri, May 20, 6PM
    If application is after deadline, lesions may start showing May 30.
Wed,  May 11 0.02 May 17,  6PM
 rain removal
Sat, May 14, 8pm Fri, May 20, 6PM
    If application is after deadline, lesions may start showing May 30.
Thu,  May 12 0 May 18,  6AM
 rain removal
Sat, May 14, 8pm Sat, May 21, 6AM 
Fri,  May 13 0 May 17,  10PM
 
Sat, May 14, 8pm Fri, May 20, 10PM 
Sat,  May 14 0.02 May 17,  10PM
 rain removal
Post-infection control needed Fri, May 20, 10PM 
Sun,  May 15 0.78 May 18,  1AM
 rain removal
Post-infection control needed Sat, May 21, 1AM 
Mon,  May 16 0.3 May 19,  2PM
 rain removal
Post-infection control needed Sun, May 22, 2PM 
Tue,  May 17 1.02 May 19,  4PM
 rain removal
Post-infection control needed Sun, May 22, 4PM 
Wed,  May 18 0.44 May 25,  6AM
 7 days normal growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Thu,  May 19 0.96 May 26,  6AM
 7 days normal growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Fri,  May 20 0.19 May 27,  6AM
 7 days normal growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Sat,  May 21 0 May 28,  1AM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Sun,  May 22 0 May 28,  4PM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Mon,  May 23 0.29 May 29,  3AM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Tue,  May 24 0.36 May 29,  5PM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Wed,  May 25 0 May 30,  3PM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Thu,  May 26 0 May 31,  2PM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 8AM 
Fri,  May 27 0 June 1,  12PM
 rapid growth
Wed, June 1, 8am Sat, Jun 4, 12PM 
Sat,  May 28 0 June 2,  3PM
 rapid growth

Ascospores depleted.
If lesions present, next infection period to spread conidial scab starts:
Sun, June 5, 9PM
Sun,  May 29 0 June 4,  11AM
 rapid growth

Ascospores depleted.
If lesions present, next infection period to spread conidial scab starts:
Sun, June 5, 9PM
Mon,  May 30 0 June 6,  6AM
 7 days normal growth

Ascospores depleted.
If lesions present, next infection period to spread conidial scab starts:
Wed, June 8, 11PM
Tue,  May 31 0 June 7,  6AM
 7 days normal growth

Ascospores depleted.
If lesions present, next infection period to spread conidial scab starts:
Wed, June 8, 11PM
Wed,  June 1 0.64 June 8,  6AM
 7 days normal growth

Ascospores depleted.
If lesions present, next infection period to spread conidial scab starts:
Wed, June 8, 11PM