Publication 360, Fruit Production Recommendations:
Blueberry Calendar - Dormant (late winter)

Table of Contents

1. Dormant (late winter)
   • Scale insects, Lecanium scale
   • Precautions
2. Other Blueberry Calendar Sections
• Early Spring, prior to bud break
• Bud swell to pink bud
• Green tip
• Pink bud
• First bloom
• Petal fall
• Green fruit
• Fruit ripening
3. Other Information on Blueberries
   • Blueberry Growth Stages
   • Blueberry Nutrition
   • Notes on Blueberry Insects and Diseases
   • Table 5-9. Products Used on Blueberries
   • Table 5-10. Activity of Fungicides on Blueberry Diseases
4. Blueberry Calendar PDF 190 KB
5. Pub 360 Chapter 5, Berry Crops - (PDF 364 kb)
6. Related Links

Scale insects or Lecanium scale (Dormant/late winter)

• Materials: Apply one of;
  
  • Lime Sulphur @ 50 L plus Dormant Oil Spray @ 12.5 L oil/1,000 L water
• Comments: Apply when plants are dormant. Spray to the point of runoff, cover completely. Do not use within 10 days of Bravo, Captan or Maestro, or phyotoxicity may result. Do not use within 48 hours of freezing temperatures.

Precautions

Consult the product label for suggested water volumes. For mature highbush blueberries, use 700-1,000 L of water per ha unless otherwise noted on the label.

Products are listed according to insecticide and fungicide family groups. 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 5-9. Products Used on Blueberries

Related Links

• OMAFRA Berry Crops Index Page
• Notes on Blueberry Diseases and Insects
• 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 75: Guide To Weed Control: Berry Crops
• OMAFRA Publication 360: Fruit Production Recommendations