Publication 360, Fruit Production
Recommendations: Apple Calendar - Special Summer Sprays
Table
of Contents
- Blister Spot
- Green Apple Aphid, Rosy Apple Aphid
- Wooly Apple Aphid
- White Apple Leafhopper
- Potato Leafhopper
- Tentiform Leafminer
- Dogwood Borer, Apple Bark Borer
- Obliquebanded Leafroller
- Oriental Fruit Moth
- European Red Mite and Two-spotted Spider Mite
- Japanese beetle
- Pinpoint and storage scab
- Precautions
- Learn more
- Other Apple Calendar sections
- Other Information on Apples
- Chapter 4: Apple
Calendar - PDF 357 kb
- Related Links
Blister
spot (Special summer sprays)
Apply
preventatively to Mutsu, Golden Delicious and other susceptible
varieties.
- Materials: Use one of:
- Copper 53 W @ 3.00 kg/ha
- Comments: Copper 53 W:
To reduce the incidence of blister spot lesions, apply
up to three sprays beginning 10 days after petal fall.
Use hydrated lime to reduce the risk of phytotoxicity
at a rate of 6 kg per 1 kg of Copper 53 W per 1,000 L
of water. Apply in 3,000 L of water per ha.
- Aliette WDG @ 2.00 kg/ha
- Comments: Aliette:
Begin applications at petal fall and spray at 7 day intervals.
Do not mix with copper compounds. Use a maximum of three
applications per season.
- For
more information - Ontario CropIPM: Blister spot
Green
apple aphid (GAA) and Rosy apple aphid (RAA) (Special summer sprays)
Spray for GAA if 10% of terminals are infested. Sprays can be delayed
or avoided if predators are present on more than 20% of infested
terminals. Apply RAA sprays if 20 or more infested clusters are
present per 100 clusters examined.
- Materials: Use one of:
- Admire 240 F @ 230 mL/ha or Alias 240 SC @ 230 mL/ha
- Assail 70 WP @ 120 g/ha
- Comments: Admire, Alias and
Assail (neonicotinoids): Use a maximum of two
applications per season. Repeated use of products in this
group may result in mite outbreaks.
- Movento 240 SC @ 365 mL/ha
- Comments: Movento:
Has slow activity; control may not be apparent for 2-3
weeks. Under high pressure a second application may be
necessary 2 weeks later. See the Movento label for additional
details. Do not tank-mix with sulfur.
- Zolone Flo @ 2.00 L/ha
- Diazinon 50 W @ see label
- Thionex 50 W @ 4.50 kg/ha
- For more information - Ontario
CropIPM: Green apple aphid (GAA), Rosy
apple aphid (RAA)
Wooly
apple aphid (Special summer sprays)
Spray
if aphid colonies are close to fruit clusters or on young trees
and nursery stock. Use high volumes of water and ensure spray contacts
trunk and scaffold limbs. Repeat application in 14 days if woolly
apple aphid is still present.
- Materials: Use one of:
- Diazinon 500 E @ see label
- Malathion 25 W @ see label
- Comments: Malathion 85 E: May
cause injury to McIntosh and Cortland if applied within
4 weeks of harvest.
- Zolone Flo @ 2.00 L/ha
- Movento 240 SC @ 365 mL/ha
- Comments: Movento:
Has slow activity; control may not be apparent for 2-3
weeks. Under high pressure a second application may be
necessary 2 weeks later. See the Movento label for additional
details. Do not tank-mix with sulfur.
- For more information - Ontario
CropIPM: Wooly apple aphid
White
apple leafhopper (Special summer sprays)
Spray
when nymphs are present (2-5 per leaf). There are two generations
of nymphs per season, in mid-June and early August. Control of adults
is very difficult.
- Materials: Use one of:
- Admire 240 F @ 200 mL/ha or Alias 240 SC @ 200 mL/ha
- Comments: Admire, Alias and
Assail (neonicotinoids): Use a maximum of two
applications per season. Repeated use of products in this
group may result in mite outbreaks.
- Calypso 480 EC @ 145 mL/ha
- Sevin XLR @ 3.1 L/ha
- Carzol SP @ 1.1 kg/ha
- Thionex 50 W @ 2.60 kg/ha
- Comments: Assail:
Applied at a rate of 120 g/ha for aphids will control
leafhoppers.
- For more information - Ontario
CropIPM: White apple leafhopper
Potato
leafhopper (Special summer sprays)
Apply
where monitoring indicates a potential problem.
- Materials: Use one of:
- Thionex 50 W @ 2.6 kg/ha
- Calypso 480 EC @ 145 mL/ha
- Comments: Assail:
Applied at a rate of 120 g/ha for aphids will also control
leafhoppers.
- For more information - Ontario
CropIPM: Potato leafhopper
Tentiform
leafminer (Special summer sprays)
From petal fall though July: Apply controls where there are one
or more sapfeeding mines per leaf. From mid to late June through
July: Apply where there are two mines per leaf (stressed trees)
or four mines per leaf (healthy trees).Use a maximum of two neonicotinoid
applications per season. Repeated use of neonicotinoids may result
in mite outbreaks.
- Materials: Use one of:
- Admire 240 F @ 380 mL/ha or Alias 240 SC @ 380 mL/ha
- Assail 70 WP @ 80 g/ha
- Calypso 480 EC @ 290 mL/ha
- Comments: Admire, Alias, Assail
and Calypso: Apply when populations are mainly
in the sapfeeder stage.
- Comments: Calypso: Note
rate change from first to second generation.
- Altacor @ 215 g/ha
- Delegate WG @ 420g/ha
- Pounce @ 520 mL/ha or Perm-Up @ 520 mL/ha
- Decis 5 EC @ 250 mL/ha
- Ripcord 400 EC @ 250 mL/ha or Up-Cyde 2.5 EC @ 400 mL/ha
- Matador 120 EC @ 83 mL/ha or Silencer 120 EC @ 83 mL/ha
- Comments: Pounce, Ambush, Perm-Up,
Ripcord, Up-Cyde , Decis, Matador, Silencer (pyrethroids):
Use is discouraged for summer generations of tentiform leafminer.
Pyrethroids are highly toxic to beneficial insects and may
lead to outbreaks of European red mite. These products do
not control larvae within the mines.
Dogwood
borer and Apple bark borer (Special summer sprays)
Materials:
Use one of:
- Pounce plus Superior Oil @ 22 mL/100 L water with 2 L oil
or Perm-Up plus Superior Oil @ 22 mL/100 L water
with 2 L oil
- Comments: Apply insecticides to tree
trunk seven days after peak flight of adults in orchards
with a history of borer problems. Make two applications
at 2-3 week intervals. Soak the trunk.
Obliquebanded
leafroller (Special summer sprays)
Place pheromone traps in orchards by June to monitor adult populations.
Insecticides for summer generation larvae should be applied at 240-280
DDC after first sustained moth catch (base 6.1°C). See Degree-day
modeling and determining a biofix. When applied for leafroller
control, these products also control other leaf-feeding caterpillars.
OBLR are resistant to organophosphate insecticides in most commercial
apple orchards. Cross-resistance to pyrethroids, Confirm, and Intrepid
is possible. Avoid treating sequential generations with the products
from the same chemical group. See Table
2-12. Insecticide and Miticide Groups Based on Sites of Action.
- Materials: Use one of:
- Success 480 SC @ 182 mL/ha
- Entrust 80 W @ 109 g/ha
- Comments: Success, Entrust:
Monitor populations and re-apply as necessary on a 7-10
day schedule. Use a maximum of three applications per
season.
- Dipel 2X DF @ 1.12 kg/ha or Foray 48BA @ 2.8 L/ha or Bioprotec
CAF @ 4.0 L/ha
- Intrepid 240 F @ 750 mL/ha
- Confirm 240 F @ 1.00 L/ha
- Comments: Intrepid, Confirm:
Note these products provide suppression of OBLR at this
timing. Apply a second spray 10-14 days after the first
application. See label for specific timing. Use a maximum
of two applications per season.
- Altacor @ 215 g/ha
- Delegate WG @ 420 g/ha
- For more information - Ontario
CropIPM: Obliquebanded leafroller
Oriental
fruit moth (Special summer sprays)
This is a special spray for orchards where there is a history of
damage or pressure. Timing is critical for effective control; use
monitoring results to adjust spray timing. Apply sprays 3-6 days
after the upswing in moth flight for subsequent generations. If
using the degree day model for OFM sprays, begin accumulating degree
days (base 7.2 C) after first sustained moth catch of the first
generation. See Degree-day
modeling and determining a biofix.
- Materials: Use one of:
- Assail 70 WP @ 240 g/ha
- Calypso 480 SC @ 440 mL/ha
- Decis 5 EC @ 250 mL/ha
- Comments: Decis: Highly
toxic to beneficial insects and may lead to outbreaks
of European red mite. Use only as a last resort.
- Intrepid 240 F @ 1.00 L/ha
- Altacor @ 215 g/ha
- Delegate WG @ 420 g/ha
Apply insecticides for second generation OFM as follows:
Assail, Calypso, Intrepid: 750-778 DDC
Decis, Altacor, Delegate: 778-833 DDC
For 3rd generation OFM (first spray):
Assail, Calypso, Intrepid: 1305-1333
DDC
Decis, Delegate, Altacor: 1361-1389 DDC
- For more information - Ontario
CropIPM: Oriental fruit moth
European
red mite and Two-spotted spider mite (Special summer sprays)
Thorough
coverage is essential for good control with miticides. Use a minimum
of 1,000 L/ha of water when applying summer miticides. See Table
4-9. Activity of Miticides Registered on Apple and/or Pear in Ontario.
Do not apply any miticide more than once per season. To prevent
development of pesticide resistance, rotate products from different
groups. See Strategies
for managing resistance to insecticides. Miticides are best
used alone.
- Materials: Use one of:
- Pyramite (for European red mite) @ 300 g/ha or Nexter (for
ERM) @ 300 g/ha
- Pyramite (for Two-spotted spider mite) @ 600 g/ha or Nexter
for (for TSSM) @ 600 g/ha
- Carzol SP @ 1.1 kg/ha
- Comments: Pyramite, Nexter,
Carzol: Apply when there are 7-10 active mites/leaf
in June to mid-July or 10-15 active
mites/leaf
in July and August.
- Comments: Carzol:
Harsh on beneficial mite species.
- Acramite 50 WS (for European red mite) @ 851 g/ha or 3.75
pouches/ha
- Acramite 50 WS (for Two-spotted spider mite) @ 567g/ha or
2.5 pouches/ha
- Envidor 240 SC @ 0.75 L/ha
- Comments: Envidor, Pyramite,
Nexter or Kelthane: Also control rust mite.
- Comments: Envidor:
Has slow activity; control may not be apparent for up
to one week.
- Kanemite 15 SC @ 2.1 L/ha
- Comments: Acramite, Envidor,
Kanemite: Apply when there are five active mites/leaf.
- For more information - Ontario
CropIPM: European red mite,Two-spotted
spider mite
Japanese
beetle (Special summer sprays)
Japanese
beetles have recently become a problem in some Ontario orchards,
especially in young plantings of Honeycrisp. If Japanese beetles
cause economic damage, insecticide sprays may be necessary.
Pinpoint
and storage scab (Special summer sprays)
Do
not use fungicides closer than the stated interval to harvest. See
Table 4-7. Products Used
on Apples. Is scab is controlled in your orchard use the lower
rate given in brackets.
- Materials: Use one of:
- Supra Captan 80 WDG @ 3.75 kg (1.9)/ha or Maestro 80 @ 3.75
(1.9)/ha
- Dikar WP @ 6.75 kg/ha
- Ployram DF @ 6.00 kg (4.5)/ha
- Manzate Pro-stick @ 6.00 (5.0)/ha or Dithane DG @ 6.00 (4.5)/ha
or Penncozeb 75 DF @ see label/ha
- Comments: Do not apply Polyram, Dikar,
Manzate, Dithane or Penncozeb within 45 days of harvest
Precautions
Read the product label and follow all safety precautions.
Consult the product label for suggested water volumes. Otherwise,
use enough water to ensure thorough spray coverage. Where the product
rate is listed in amount per 1,000 L, and if a water volume is not
provided on the label, use enough water to wet the foliage to the
near drip point.
For information on identifying pests and monitoring apple orchards,
refer to OMAFRA Publication 310, Integrated Pest Management for
Apples.
Products are listed according to insecticide and fungicide group.
Use products from different groups to prevent the development of
pest resistance. For resistance management, refer to Pest
Resistance to Insecticides, Fungicides, Miticides.
For preharvest interval, re-entry period, maximum number of applications
and chemical group, see Table
4-7. Products Used on Apples.
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