Publication 360, Fruit Production Recommendations:
Plum Calendar - First cover (12 days after Shuck)

Excerpt from Publication 360, Fruit Production Recommendations 2010-11,
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Table of Contents

1. First cover (12 days after Shuck)
   • Brown rot, Leaf spot, Black knot
   • Plum curculio
   • Precautions
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)
   • Second cover
   • Prepick
   • Special sprays (when monitoring indicates the need)
   • Postharvest fruit treatment
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

Brown rot, Leaf spot, Black knot (First cover)

• Materials: Use one of the fungicides listed under Shuck fall.
• Comments:Captan or Maestro: May cause leaf injury and spotting on the fruit of Stanley and Japanese plums under some circumstances.
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Brown rot
    • Fabraea leaf spot

Plum curculio (First cover)

• Materials: Use one of the insecticides listed under Shuck fall.
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Plum curculio

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