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

Table of Contents

1. First cover (12 days after shuck)
   • Plum curculio
   • Powdery mildew
   • Obliquebanded leafroller
   • Leaf spot
   • Precautions
2. Other Sour Cherry Calendar Sections
   • Dormant
   • Prebloom
   • Bloom
   • Petal fall
   • Shuck split
   • Special sprays (when monitoring indicates the need)
   • Second cover (12 days after first cover)
   • 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

Plum curculio (First cover)

• Materials: Use one of the insecticides listed under Shuck split
• Comments: Monitor 7 days after the insecticide at shuck split for new plum curculio damage. If new crescent-shaped cuts on fruit are found, apply an insecticide.

Powdery mildew (First cover)

• Materials: Use one of:
  • Nova @ 340 g/ha
  • Flint 50 WG @ 210 g/ha
  • Cabrio @ 670 g/ha
  • Pristine WG @ 750 g/ha
  • Kumulus DF @ 120 kg/ha
• Comments: Cover sprays applied after shuck split are critical for powdery mildew control. Do not use products from the same group in consecutive sprays.
  Flint, Cabrio, Pristine: Do not alternate among these products.
  Flint: Do not apply where spray drift may reach Concord grapes as it may cause crop injury.

Obliquebanded leafroller (First 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.
  Delegate and 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 (First cover)

• Use one of the fungicides listed under Petal fall with the exception of Ferbam and Bravo.

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 Recommendation