Publication 360, Fruit Production Recommendations:
Blueberry Calendar - Early Spring, prior to bud break

Order this publication

Table of Contents

1. Early Spring, prior to bud break
   • Phytophthora root rot
   • Precautions
2. Other Blueberry Calendar Sections
• Dormant (late winter)
• 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

Phytophthora root rot (Early Spring, prior to bud break)

• Materials: Ridomil Gold 480 SL @ Banded: 37 mL/100 m
• Comments: If phytophthora root rot has been identified, apply 37 mL/100 m of row to the soil surface in a 1 m band centered over the row. Apply in at least 2,000 L of water per ha.

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