Publication 360, Fruit Production Recommendations:
Currant and Gooseberry Calendar - Bloom

Table of Contents

1. Bloom
   • Botrytis grey mould
• Precautions
2. Other Currant and Gooseberry Calendar Sections
• Just before blossoms open
• Postbloom: as soon as bloom is complete
• 10 days after postbloom spray
• Postharvest
3. Other Information on Currants and Gooseberries
   • Currant and Gooseberry Nutrition
   • Table 5-11. Products Used on Currants
   • Table 5-12. Disease Ratings on Selected Currant and Gooseberry Varieties
4. Currant and Gooseberry Calendar - PDF 91 kb
5. Pub 360, Chapter 5, Berry Crops - PDF 364 kb
6. Related Links

Bloom

Botrytis grey mould (Bloom)

Botrytis infection during bloom causes early fruit drop, or “run-off” in currants. Apply fungicides at 7–10 day intervals during bloom. Choose fungicides from different chemical families to reduce the development of resistant strains of Botrytis.

• Materials: Apply one of;
  • Pristine WG @ 1.30-1.60 kg/ha
  • Lance WDG @ 560 g/ha
  • Elevate 50 WDG @ 1.70 kg/ha
    
  • Serenade ASO @ 4.0-15.0 kg/ha
• Comments: Pristine and Lance: Both include active ingredients in the same fungicide family. Do not alternate Pristine with Lance.Serenade ASO: Provides suppression, rather than control. Expect best results when used in multiple applications or rotation with other products. See notes on Bacillus subtilis (Serenade ASO, Serenade MAX).

Precautions

Read the product label and follow all safety precautions.
Always 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 listed according to insecticide and fungicide family groups. Use of products from different groups helps 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 5-11. Products Used on Currants.

Related Links

• Notes on Currant and Gooseberry Diseases and Insects
• OMAFRA Berry Crops Index page
• 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