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Apple Calendar: First Summer Spray and Subsequent Summer Spray

Author: OMAFRA Staff
Creation Date: 25 June 2007
Last Reviewed: 25 June 2007
Pub 360, Fruit Production Recommendations > Apples > Apple Calendar > First Summer Spray and Subsequent Summer Spray
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Extract of Publication 360, Fruit Production Recommendations , Order this publication

Cover of Publication 360, Fruit Production RecommendationsTable of Contents

  1. Apple Calendar
  2. Pub 360 Chapter 7 - Apples - Apple Calendar - (Pdf format 1.17 Mb)
  3. Related Links
  4. For more Information

Apple Calendar

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.

Check Table 7-7, Days to Harvest Intervals for Products Used on Apples

An apple with scab lesionsFirst summer spray (7 - 10 days after Petal fall (Calyx)

Diseases and Insects

  • Scab

Materials and Amount/ha trees 4.5 - 5.5 m high

  • use 1 of the fungicides recommended at Bloom.

Comments

An extra scab spray may be required between Petal fall (Calyx) and First summer spray. See Control of Apple Scab Under Adverse Weather Conditions on page 121.

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adult plum curculioDiseases and Insects

  • Plum curculio

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Use 1 of the insecticides listed under Petal fall (calyx).

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fire blight cankerDiseases and Insects

  • Fire blight

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Streptomycin 17 - 600 g/1,000 L

Comments

Apply up to 14 days after petal fall to control shoot blight especially if blossom blight has occured.

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European Red MiteDiseases and Insects

  • European red mite

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Apollo SC - 300 mL
  • Agri-Mek 1.9% EC - 750 mL
  • Acramite 50 WS - 851 g or 3.75 pouches
  • Envidor 240 SC

Comments

Do not apply any miticide more than once per season. Miticides are best applied alone.

Apollo: Apply no later than 14 days after petal fall. Apollo kills mite eggs. Apply when mites are mostly in the egg stage and before there are more than 3 active mites per leaf. Thorough coverage is essential for good control. Apply Apollo alone in a minimum of 1,100 L of water/ha.

Agri-Mek: Apply when mites are in the nymph stage, no later than 21 days after petal fall. Apply with 10 L of Superior 70 Oil and a minimum of 1,000 L of water/ha. Agri-Mek plus oil may cause russeting to Golden Delicious and other light-skinned cultivars. Do not use Agri-Mek plus oil within 14 days of Captan or Maestro application.Maximum 1 application per season.

Ideally, alternate yearly with other early season miticides (e.g., Superior 70 Oil, Apollo). Agri-Mek also controls tentiform leafminer.

Acramite: is not effective on rust mites.

Envidor: is effective in managing apple rust mites. Activity is slow; control may not be apparent for up to 1 week.

See Pest Resistance to Insecticides, Fungicides, Miticides on page 54.

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Two-Spotted Spider Mite adults and eggs Diseases and Insects

  • 2-spotted spider mite

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Apollo SC - 300 mL
  • Agri-Mek 1.9% EC - 750 mL
  • Acramite 50 WS - 567 g or 2.5 pouches
  • Envidor 240 SC - 0.75 L

Comments

Do not apply any miticide more than once per season. Miticides are best applied alone.

Apollo: Apply no later than 14 days after petal fall. Apollo kills mite eggs. Apply when mites are mostly in the egg stage and before there are more than 3 active mites per leaf. Thorough coverage is essential for good control. Apply Apollo alone in a minimum of 1,100 L of water/ha. Maximum 1 application per season.

Agri-Mek Apply when mites are in the nymph stage, no later than 21 days after petal fall. Apply with 10 L of Superior 70 Oil and a minimum of 1,000 L of water/ha. Agri-Mek plus oil may cause russeting to Golden Delicious and other light-skinned cultivars. Do not apply within 14 days of Captan or Maestro application. Maximum 1 application per season. Ideally, alternate yearly with other early season miticides (e.g., Superior 70 Oil, Apollo). Agri-Mek also controls tentiform leafminer.

Acramite is not effective on rust mites.

Envidor is effective in managing apple rust mites. Activity is slow; control may not be apparent for up to 1 week.

See Pest Resistance to Insecticides, Fungicides, Miticides on page 54.

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Rosy apple aphid colonyDiseases and Insects

  • Rosy apple aphid

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Admire 240 F - 230 mL
  • Assail 70 WP - 120 g
  • Pirimor 50 DF - 1.70 kg
  • Zolone Flo - 2.00 L

Comments

Admire or Assail applied at this time also control green apple aphid and white apple leafhopper.

Admire: Maximum 2 applications per season.

Assail: Maximum 4 applications per season.

Pirimor 50 DF: Some countries have zero tolerance for Pirimor residues on fruit. Check with your packer before applying this material.

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powdery mildew damage on fruitDiseases and Insects

  • Powdery mildew

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Use 1 of the fungicides listed under Tight cluster to pink.

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late summer fruit blister spotsDiseases and Insects

  • Blister spot

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Copper 53 W - 3.00 kg
  • Aliette WDG - 2.00 kg

Comments

Copper 53W : To reduce the incidence of blister spot lesions on Crispin and other sensitive varieties, apply up to 3 applications beginning 10 days after Petal fall. Use hydrated lime as a safener (to reduce the risk of phytotoxicity) at a rate of 6 kg per 1 kg of Copper 53W per 1,000 L of water. Apply 3,000 L of water/ha.

Aliette: Begin applications at petal fall with 1 to 2 subsequent sprays at 7 day intervals. Maximum 3 applications per season. Do not mix with copper compounds.

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oriental fruit moth damage on a fruitDiseases and Insects

  • Oriental fruit moth

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Isomate M 100 - 250 dispensers/ha
  • Isomate Rosso - 500 dispensers/ha

Comments

See Oriental Fruit Moth on page 110. Refer to mating disruption comments listed under Half-inch green to tight cluster.

Apply a 2nd application of Isomate M 100 75-80 days following the 1st application.

Isomate Rosso will provide control for up to 120 days.

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An apple with scab lesionsSubsequent summer sprays

Diseases and Insects

  • Scab

Materials and Amount/ha trees 4.5 - 5.5 m high

Until the end of the primary scab season use 1 of the fungicides recommended at Bloom. For summer (secondary) scab control, use 1 of the following:

  • Supra Captan 80 WDG - 3.75 kg (1.9)
    or Maestro 80 DF - 3.75 91.9)
  • Dikar WP - 6.75 kg
  • Ployram DF - 6.00 kg (4.5)
  • Manzate Df - 6.00 (5.0)
    or Dithane DG - 6.00 (4.5)
    or Penncozeb 75 DF - see label

Comments

If scab is controlled in your orchard use the lower rate given in brackets.

If secondary lesions develop, see Deactivation of Established Scab Lesions on page 121. Do not apply Polyram, Dikar, Manzate 200, Dithane or Penncozeb within 45 days of harvest.

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sooty blotch on an appleDiseases and Insects

  • Sooty blotch
  • Fly speck

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Supra Captan 80 WDG - 3.75 kg
    or Maestro 80 DF - 3.75 kg
  • Flint 50 WG

Comments

Repeat application of Captan or Maestro in 2 weeks.

Captan or Maestro at full rates provides protection against black rot.

Flint: Maximum 4 applications per season.

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adult codling mothDiseases and Insects

  • Codling moth

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Imidan 50 WP - 3.75 kg
  • Guthion Solupak - see label
    or Sniper - see label
  • Zolone Flo - 2.00 L
  • Confirm 240 F - 1.00 L
  • Assail 70 WP - 170 g
  • Intrepid 240 F - 1.00 L

Comments

Timing is critical for effective control.  Use pheromone traps to time sprays.

Guthion and Sniper: Also control scale crawlers.

Zolone: Also controls aphids.

Confirm and Intrepid: Also suppress leaf-feeding caterpillars, but do not control apple maggot. Accurate timing of Confirm/Intrepid is important. Apply at 1st egg hatch. See label for specific timing. Intrepid or Confirm should be applied 2-3 days earlier than conventional pesticides.  Maximum 2 applications per season.

Assail : Maximum 4 applications per season.

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oriental fruit moth damage on a fruitDiseases and Insects

  • Oriental fruit moth

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Isomate M 100 - 250 dispensers/ha
  • Isomate Rosso - 500 dispensers/ha

Comments

See Oriental Fruit Moth on page 110. Refer to mating disruption comments listed under Half-inch green to tight cluster.

Apply a 2nd application of Isomate M 100, 75-80 days following the 1st application.

Isomate Rosso will provide control for up to 120 days.

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adult female apple maggot flyDiseases and Insects

  • Apple maggot

Materials and Amount/ha trees 4.5 - 5.5 m high

  • Imidan 50 WP - 3.75 kg
  • Guthion Solupak - see label
    or Sniper - see label
  • Zolone Flo - 3.00 L
  • Sevin XLR - 6.25 L
  • Diazinon 50 W - see label
  • Surround WP - 50.00 kg

Comments

See Apple Maggot on page 104. Use trap catches to time the 1st spray. Make subsequent applications at 14-21 day intervals or as required based on monitoring.

Begin Surround applications well before 1st maggot flies are trapped in commercial orchards, and continue at 7-14 day intervals to maintain even coverage of fruit. Use 50 kg/ha for the 1st 2 applications of the season, continue at 25 kg/ha. See "Using Surround as a Pest Management Tool" page 104.

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