Publication 360, Fruit Production Recommendations:
Sour Cherry Calendar - Second cover (12 days after First cover)

Table of Contents

1. Second cover (12 days after First cover)
   • Cherry fruit fly
   • Plum curculio
   • Obliquebanded leafroller
   • Leaf spot
   • Powdery mildew
   • Precautions
2. Other Sour Cherry Calendar Sections
   • Dormant
   • Prebloom
   • Bloom
   • Petal fall
   • Shuck split
   • First cover (12 days after shuck split)
   • Special sprays (when monitoring indicates the need)
   • Third cover
   • Special sprays (when monitoring indicates the need)
   • Preharvest
   • Postharvest
   • Special sprays (when monitoring indicates the need)
   • Postharvest fruit treatment
   • Fall spray
3. Other Information on Sour Cherries
   • Growth regulators for Sour Cherries
   • Notes on Tender Fruit Insects & Diseases
   • Table 7-6. Products Used on Sour Cherries
   • Table 7-11. Activity of Fungicides on Stone Fruit Diseases
   • Tender Fruit Nutrition
4. Sour Cherry Calendar PDF 115 kb
5. Chapter 7 - Tender Fruit Calendar PDF 401 kb
6. Related Links

Cherry fruit fly (Second cover)

• Materials: Use one of:
  • GF-120 NF @ 1.5 L/ha
    or Entrust 80 W @ 109 g/ha
  • Admire 240 @ 233 mL/ha
  • Assail 70 WP @ 240 g/ha
  • Guthion 50 WSB - see label
    or Sniper @ see label
  • Imidan 50 WP @ 3.75 kg/ha
  • Diazinon 50 W - see label
  • Zolone Flo @ 2.0 L/ha
• Comments: GF-120 NF: Spray as soon as monitoring traps indicate flies are present or 2-3 weeks before ripening. GF-120 is a bait formulation that requires large droplet size (4-6 mm); specialized application equipment may be needed. GF-120 will lose effectiveness if exposed to rain or overhead irrigation.
  Diazinon, Zolone, Guthion and Imidan: On early varieties, check preharvest interval. Spray when early varieties are beginning to colour.
  Diazinon: Provides 10 days protection against cherry fruit fly.
  Zolone: Provides 12-14 days protection against cherry fruit fly.

Plum curculio (Second cover)

• Materials: Use one of:
  • Assail 70 WP @ 240 g/ha
  • Guthion 50 WSB - see label
    or Sniper - see label
  • Zolone Flo @ 2.0 L/ha
  • Imidan 50 WP @ 3.75 kg/ha
• Comments: Assail: Under high insect pressure, may provide suppression rather than control of plum curculio.
  Diazinon, Zolone, Guthion and Imidan: On early varieties, check preharvest interval. See Table 7-6. Products Used on Sour Cherries.

Obliquebanded leafroller (Second cover)

• Materials: Use one of:
  • Dipel 2X DF @ 1.12 kg/ha
    or Bioprotec CAF @ 4.0 L/ha
  • Success 480 SC @ 182 mL/ha
    or Entrust 80 W @ 109 g/ha
  • Delegate WG @ 420 g/ha
  • Altacor @ 285 g/ha
• Comments: Routine monitoring is necessary to determine if obliquebanded leafrollers are causing damage in sour cherries.
  Altacor: For OBLR summer generation, apply at 240-280 degree days C (base 6.1°C) after biofix.
  For resistance management, if more than one spray is required for this generation, use a product from the same chemical group. For subsequent generations rotate to another chemical group.
  Dipel, Bioprotec: See Biopesticides and reduced risk products for insect control.
  

Leaf spot (Second cover)

• Use one of the fungicides recommended at Petal fall with the exception of Ferbam and Bravo.

Powdery mildew (Second cover)

• Materials: Use one of:
  • Nova 40 W @ 340 g/ha
  • Cabrio EG @ 670 g/ha
  • Pristine WG @ 750 g/ha
  • Flint 50 WG @ 210 g/ha
  • Kumulus DF @ 12.0 kg/ha
• Comments: Do not use products from the same group in consecutive sprays.
  Cabrio, Pristine and Flint: Do not alternate among these products.
  Flint: Do not apply where spray drift may reach Concord grapes as it may cause crop injury.
  Cabrio: Will also suppress brown rot.
  Pristine: Provides suppression of powdery mildew.
  Kumulus: Suppresses powdery mildew at this rate. Higher rates may cause injury.
  

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.
Products are grouped by fungicide and insecticide family. Use products from different groups to prevent 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 7-6. Products Used on Sour Cherries.

Related Links

• Integrated Pest Management (IPM)
• Pesticide Application and Safety
• Pesticide Companies and Agents
• Search the PMRA website
• Ontario Minor Use Program
• OMAFRA Publication 505: Ontario Weeds
• OMAFRA Publication 360: Fruit Production Recommendations