Publication 360, Fruit Production Recommendations: Apple Calendar

Publication 360, Fruit Production Recommendations:
Apple Calendar - Subsequent Summer Sprays

Pub 360, Fruit Production Recommendations > Ch.4, Apples > Apple Calendar > Subsequent Summer Spray

Excerpt from Publication 360, Fruit Production Recommendations 2010-11,
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Scab (Subsequent summer sprays)

If scab is controlled in your orchard use the lower rate given in brackets. Until the end of the primary scab season use one of the fungicides recommended at Bloom. For summer (secondary) scab control, follow the instructions below. If 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
  - Comments: Do not apply Polyram, Dikar, Manzate, Dithane or Penncozeb within 45 days of harvest.
For more information - Ontario CropIPM: Scab

Sooty blotch and Fly speck (Subsequent summer sprays)

Materials: Use one of:
- Supra Captan 80 WDG @ 3.75 kg/ha or Maestro 80 DF @ 3.75 kg/ha
  - Comments: Captan or Maestro: Repeat application in 2 weeks. At full rates these products protect against black rot.
- Flint 50 WG @ 140 g/ha
- Pristine WG @ 0.6-0.8 kg/ha
  - Comments: Pristine: Use the higher rate and a shorter interval during periods of rapid growth or when disease pressure is high.
For more information - Ontario CropIPM: Sooty blotch, Fly speck

Codling moth (second generation) (Subsequent summer sprays)

Timing is critical for effective control. Use pheromone traps to time sprays. For second generation codling moth, spray at 611-694 DDC (base 10° C) after first generation sustained moth catch. See Degree-day modeling and determining a biofix. Some products also control apple maggot or other pests. See Table 4-10. Activity of Insecticides and Miticides on Apple Pests.

Materials: Use one of:
- Intrepid 240 F @ 1.00L/ha
- Confirm 240 F @ 1.00 L/ha
  - Comments: Intrepid and Confirm: Apply 2-3 days earlier than OP insecticides (611-639 DDC). Intrepid residues last 14+ days. Do not apply as a border spray.
- Assail 70 WP @ 170 g/ha
- Calypso 480 EC @ 440 mL/ha
  - Comments: Assail and Calypso: Apply 1-2 days earlier than OP insecticides (639-667 DDC). Assail and Calypso residues last 10-14 days. Do not apply as a border spray.
- Imidan 50 WP @ 3.75 kg/ha
- Guthion 50 WSB @ see label or Sniper @ see label
- Zolone Flo @ 2.00 L/ha
  - Comments: Imidan, Guthion, Sniper, Zolone (OP insecticides): Apply at 667-694 DDC. Do not apply as a border spray.
- Altacor @ 215 g/ha
- Delegate WG @ 420 g/ha
  - Comments: Delegate and Altacor: Apply at 667-694 DDC. Do not apply as a border spray.
  - Comments: Virosoft CP4 (granulosis virus): A biopesticide that is registered for codling moth. For more information on this product, refer to notes on Cydia pomonella granulosis virus (Virosoft).
For more information - Ontario CropIPM: Codling moth

Oriental fruit moth (Subsequent summer sprays)

Refer to mating disruption comments listed under Half-inch Green to Tight Cluster.

Materials: Use one of:
- Isomate-M 100 @ 250 dispensers/ha
  - Comments: Isomate-M 100: Make a second application 75-80 days following first application.
- Isomate-M Rosso @ 500 dispensers/ha
  - Comments: Isomate-M Rosso: Provides control for up to 120 days.
For more information - Ontario CropIPM: Oriental fruit moth

Apple maggot (Subsequent summer sprays)

Use trap catches to time the first spray. Make subsequent applications at 14-21 day intervals or as required based on monitoring.

Materials: Use one of:
- Imidan 50 WP @ 3.75 kg/ha
- Guthion 50 WSB @ see label or Sniper @ see label
- Zolone Flo @ 3.00 L/ha
- Diazinon 50 W @ see label
  - Comments: Imidan, Guthion, Sniper, Zolone, Diazinon: Apply 7 days after the first adult maggot is caught on a sticky board. Residues last approximately 18-21 days.
- Calypso 480 EC @ 440 mL/ha
  - Comments: Calypso: Apply 7 days after the first adult maggot is caught on a sticky board. Calypso residue lasts 14 days. Use a maximum of two neonicotinoid applications per season. Repeated use of neonicotinoids may result in mite outbreaks. Not recommended as a border spray.
- Surround WP @ 50.00 kg/ha
  - Comments: Surround: Begin applications well before first maggot flies are trapped in commercial orchards, and continue at 7-14 day intervals to maintain even coverage of fruit as long as flies continue to be captured. Use 50 kg/ha for the first two applications of the season, continue at 25 kg/ha. Do not use Surround in border sprays. See notes on Kaolin Clay (Surround WP).
  - Comments: GF-120 NF (spinosad bait): Provides suppression of apple maggot. See notes on Spinosad + bait (GF-120).
For more information - Ontario CropIPM: Apple maggot

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 Use d on Apples.

Learn more:

Notes on Apple Diseases

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