Publication 360, Fruit Production Recommendations:
Sour Cherry Calendar - Bloom

Table of Contents

1. Bloom
• Brown rot (stem rot and blossom blight stages)
• Precautions
2. Other Sour Cherry Calendar Sections
   • Dormant
   • Prebloom
   • Petal fall
   • Shuck split
   • First cover (12 days after 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

Do not apply insecticides while cherry trees are in bloom.
See Bee Poisoning.

Blossom blight stage of brown rot (Bloom)

• Materials: Use one of:
  • Topas 250 E @ 500 mL/ha
    or Mission 418 EC @ 300 mL/ha
  • Indar 75 WSP @ 140 g/ha
  • Funginex DC @ 2.5 L/ha
  • Nova 40 W @ 340 g/ha
  • Rovral @ 1.5 kg/ha
  • Elevate 50 WDG @ 1.7 kg/ha
  • Lance WDG @ 370 g/ha
  • Pristine WG @ 750 g/ha
  • Bravo 500 @ 7.0 L/ha
  • SupraCaptan 80 WDG @ 4.5 kg/ha
    or Maestro 80 DF @ 4.5 kg/ha
  • Kumulus DF @ 22.50 kg
• Comments: Spray when first blooms open if weather conditions are expected to be wet and warm (above 16°C) during bloom. Sour cherries are less susceptible to brown rot than sweet cherries. One application during bloom should be sufficient, unless frequent wet periods occur and brown rot pressure is high.
  Alternate among fungicide groups and do not use products from the same group in consecutive sprays. See Pest Resistance to Insecticides, Fungicides, Miticides.
  Nova, Funginex, Topas, Mission and Indar: Do not rotate among these products. Use one and then alternate to another family.
  Topas, Mission: Also suppress black knot.
  Pristine and Lance: Do not alternate Pristine with Lance.
  Captan, Maestro or Bravo: Do not use within 14 days of an oil application.
  

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