Publication 360, Fruit Production Recommendations:
Raspberry Calendar - Bloom

1. Bloom
   • Botrytis grey mould
   • Precautions
2. Other Raspberry Calendar Sections
• Delayed dormant to green tip
• Prebloom (until blossoms open)
• Green fruit
• Preharvest
• Postharvest
• Special Sprays: Early spring and/or fall
3. Other Information on Raspberries
   • Raspberry Nutrition
   • Table 5-13. Products Used on Raspberries
   • Table 5-14. Activity of Fungicides on Raspberry Diseases
   • Table 5-15. Activity of Insecticides on Raspberry Pests
4. Raspberry Calendar PDF 142 KB
5. Pub 360, Chapter 5, Berry Crops - PDF 364 kb
6. Related Links

    

Bloom

Do not apply insecticides while raspberries and blackberries are in bloom. See Bee Poisoning.

Botrytis grey mould (Bloom)

Bloom is the most important time to control botrytis grey mould. Begin at 5-10% bloom and if the weather is wet, repeat every seven days. Choose fungicides from different fungicide groups to reduce the development of resistant strains.

• Materials: Apply one of;
  • Rovral @ 2.0 kg/ha
  • Supra Captan 80 WDG @ 2.5 kg/ha or Maestro 80 DF @ 2.5 kg/ha
  • Elevate 50 WDG @ 1.7 kg/ha
  • Lance 50 WDG @ 560 g/ha
  • Pristine WG @1.3-1.6 kg/ha
  • Switch 62.5 WG @ 775g/ha
  • Serenade ASO @ 4.0-15.0 kg/ha
• Comments: Captan or Maestro: Also control spur blight. The rate for Supra Captan 80 WDG and Maestro 80 DF on blackberry is 2.25 kg/ha.
  Pristine and Lance: Both include active ingredients in the same group. Do not alternate Pristine with Lance.
  Serenade ASO: Provides suppression, rather than control of botrytis grey mould. Expect best results from multiple applications or when used in rotation with other products. See notes on Bacillus subtilis (Serenade ASO, Serenade MAX).
  

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 products from different groups to help prevent 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 5-14. Products Used on Raspberries.

Related Links

• OMAFRA Berry Crops Index Page
• Notes on Raspberry 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