Publication 360, Fruit Production Recommendations:
Plum Calendar - Postharvest fruit treatment

Table of Contents

1. Postharvest fruit treatment
• Blue mould, Grey mould, Brown rot, Rhizopus rot
2. Other Plum Calendar Sections
• Dormant (before bud break)
• Green tip (just as buds are bursting)
• Popcorn (when blossoms show white)
• Bloom
• Shuck (when most of the shucks are off)
• First cover (12 days after Shuck)
• Second cover
• Prepick
• Special sprays (when monitoring indicates the need)
3. Other Information on Plums
   • Heat spot
   • Thinning plums
   • Notes on Tender Fruit Insects & Diseases
   • Table 7-10. Products Used on Plums
   • Table 7-11. Activity of Fungicides on Stone Fruit Diseases
   • Tender Fruit Nutrition
4. Plum Calendar (PDF 103 KB)
5. Chapter 7 - Tender Fruit Calendar PDF 401 KB
6. Related Links

Blue mould, Grey mould, Brown rot, Rhizopus rot (Postharvest fruit treatment)

• Materials: Use one of:
  • Scholar 50 WP @ 227 g/378 L water
• Comments: Postharvest treatment may be necessary during wet harvest seasons. These treatments will prolong storage time while providing control of postharvest diseases. See label for dip and drench instructions.
  Scholar: Should not be used on plums intended for processing into prunes.
• Learn more:
  • Notes on Tender Fruit Diseases and Insects
    • Brown rot
      

Precautions:

Read the product label and follow all safety precautions. 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 by fungicide and insecticide group. Use products from different groups to prevent 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 7-10. Products Used on Plums.

Related Links

• 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 360: Fruit Production Recommendations