Sample Simplified Home Apple Low-Spray
Schedule
Compiled by Beth Wilson, Pulaski County Horticulture Agent, and
Dr. John Strang, University of Kentucky
Extension Fruit Specialist
2011
For pictures of growth stages, see pages 18 and 19 in
ID-21.
Recommendations based on ID-21. For organic options
refer to ID-21.
Dormant (before buds
swell)
Ø
Fixed copper –
fire blight control
Ø
Dormant oil –
only if you have scale insect problems
Ø
These two sprays
may be combined if fixed copper is used.
Green tip to half-inch
green
Ø
Fixed copper (if
you did not spray as a dormant spray) – fire blight control
Ø
Dormant oil if
not used earlier – for mites and aphids
Ø
Mancozeb* +
Immunox (myclobutanil) fungicides for control of apple
scab and rust
Ø
Fixed copper,
dormant oil, Mancozeb and immunox can be combined in one spray.
Ø
No insecticide
needed at this point
Just before blooms open
Ø
Mancozeb +
Immunox – you will be on a 10 to 14 day spray schedule with this. Immunox is
systemic and won’t wash off.
Ø
Mancozeb must be
re-applied if a significant rain (more than one inch occurs)
Ø
Mancozeb has a 77
day pre-harvest interval (PHI), so you MUST stop spraying with this at
least 77 days before you expect the apples to be harvested.
Ø
Plus Malathion
insecticide
Bloom
Ø
Mancozeb – for
cedar apple rust and scab control
Ø
No insecticides
Ø
Streptomycin –
Fire blight control (every 4 days for a total of no more than 4 sprays for
maximum control)
After petals fall
Ø
Mancozeb +
Immunox
Ø
Malathion – for
insect control
Ø
Mix all of these in
the same spray tank
Every 2 weeks after
Ø
Use mancozeb as
long as you can per the 77 day PHI, mix with malathion or permethrin (rotate
these 2)
Ø
Orchard spray –
use this after mancozeb can no longer be safely used.
Ø
Orchard spray
contains captan (fungicide) and malathion usually, no need to mix in additional
insecticide. Add Topsin M
(thiophanate-methyl), another fungicide for powdery mildew and improved sooty
blotch and flyspeck control
Ø
Check label for
PHI and abide by this
*May substitute Captan for
Mancozeb throughout this spray schedule
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