Publication 360, Fruit Production Recommendations:
Blueberry Calendar - Green tip

Table of Contents

1. Green tip
   • Phomopsis stem canker, Anthracnose fruit rot
   • Precautions
2. Other Blueberry Calendar Sections
• Dormant (late winter)
• Early Spring, prior to bud break
• Bud swell to pink bud
• 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

Phomopsis stem canker and Anthracnose fruit rot (Green tip)

Apply fungicides to prevent twig blights and reduce overwintering inoculum.

• Materials: Apply one of;
  • Cabrio EG @ 1.00 kg/ha
  • Pristine WG @ 1.3-1.6 kg/ha
  • Bravo 500 @ 7.20 L/ha
  • Allegro 500 F @2.24 L/ha
• Comments: Pristine: Use 1.6 kg/ha for phomopsis stem canker.
  Pristine and Cabrio: Both include active ingredients in the same fungicide group. Use a maximum of two consecutive applications, then alternate with fungicides from different families.
  Bravo: Will also control alternaria fruit rot.
  Allegro: Provides suppression rather than control. See Table 2-6. Efficacy Ratings for Pesticides.
• Learn more:
  • Notes on Blueberry Diseases and Insects
• Anthracnose fruit rot
• Phomopsis stem canker

 

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