Sulfur fungicide Respray Dates for Scab Suppression

Background Information for this page
Return to Apple list for Easthampton MA
Weather data for Easthampton MA.  Forecast values begin July 3, 2017
Full-dose SULFUR fungicide
SPRAY DATE

(not dust)
6am application time assumed
Inches Rain
(0.5" esimated to remove sulfur coverage)
END of SULFUR FUNGICIDE
PROTECTION

& limiting factor
DEADLINE for next
Pre-Infection Application

= start time for the next infection period
that has rain after fungicide depletion time.
Sat,  April 22 0 Wed, April 26,  3AM
rain removal
Tue, April 25, 5am
Sun,  April 23 0 Wed, April 26,  3AM
rain removal
Tue, April 25, 5am
Mon,  April 24 0 Wed, April 26,  3AM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Tue,  April 25 0.39 Wed, April 26,  3AM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Wed,  April 26 0.31 Sat, April 29,  2PM
rapid growth
Fri, April 28, 5am
Thu,  April 27 0 Sun, April 30,  10AM
rapid growth
Sulfur depleted by rain, renew protection as soon as possible
Fri,  April 28 0.01 Tue, May 2,  1AM
rain removal
Sun, April 30, 11am
Sat,  April 29 0 Tue, May 2,  1AM
rain removal
Sun, April 30, 11am
Sun,  April 30 0.15 Tue, May 2,  1AM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Mon,  May 1 0.11 Tue, May 2,  2AM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Tue,  May 2 0.77 Fri, May 5,  1PM
rain removal
Fri, May 5, 4am
Wed,  May 3 0 Fri, May 5,  2PM
rain removal
Fri, May 5, 4am
Thu,  May 4 0 Fri, May 5,  2PM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Fri,  May 5 1.11 Fri, May 5,  2PM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Sat,  May 6 0.35 Sat, May 13,  6AM
slow growth at 7 day limit
Sat, May 13, 2pm
Sun,  May 7 0.1 Sat, May 13,  9PM
rain removal
Sat, May 13, 2pm
Mon,  May 8 0 Sat, May 13,  10PM
rain removal
Sat, May 13, 2pm
Tue,  May 9 0 Sat, May 13,  10PM
rain removal
Sat, May 13, 2pm
Wed,  May 10 0 Sat, May 13,  10PM
rain removal
Sat, May 13, 2pm
Thu,  May 11 0 Sat, May 13,  10PM
rain removal
Sat, May 13, 2pm
Fri,  May 12 0 Sat, May 13,  10PM
rain removal
Sat, May 13, 2pm
Sat,  May 13 0.73 Sat, May 13,  10PM
rain removal
Sulfur depleted by rain, renew protection as soon as possible
Sun,  May 14 0.64 Thu, May 18,  7PM
rapid growth
Thu, May 18, 9pm
Mon,  May 15 0.29 Fri, May 19,  3AM
rapid growth
Mon, May 22, 2am
Tue,  May 16 0 Fri, May 19,  1PM
rapid growth
Mon, May 22, 2am
Wed,  May 17 0 Sat, May 20,  4PM
rapid growth
Mon, May 22, 2am
Thu,  May 18 0.15 Tue, May 23,  6AM
5 days normal growth
Thu, May 25, 8am
Fri,  May 19 0.07 Wed, May 24,  6AM
5 days normal growth
Thu, May 25, 8am
Sat,  May 20 0 Thu, May 25,  6AM
5 days normal growth
Thu, May 25, 8am
Sun,  May 21 0 Thu, May 25,  6PM
rain removal

Ascospores depleted before end of protection.  If lesions present, next infection period to spread secondary scab starts: 
May 29, 11AM
Mon,  May 22 0.25 Thu, May 25,  8PM
rain removal

Ascospores depleted before end of protection.  If lesions present, next infection period to spread secondary scab starts: 
May 29, 11AM
Tue,  May 23 0 Thu, May 25,  11PM
rain removal

Ascospores depleted before end of protection.  If lesions present, next infection period to spread secondary scab starts: 
May 29, 11AM
Wed,  May 24 0 Thu, May 25,  11PM
rain removal

Ascospores depleted before end of protection.  If lesions present, next infection period to spread secondary scab starts: 
May 29, 11AM
Thu,  May 25 0.52 Thu, May 25,  11PM
rain removal
Sulfur depleted by rain, renew protection as soon as possible