Publication 360, Fruit Production Recommendations:
Pear Calendar - Special spray (when monitoring indicates the need at Petal fall)

Excerpt from Publication 360, Fruit Production Recommendations 2010-11,
Order this publication

Table of Contents

1. Special spray (when monitoring indicates the need at petal fall)
• Codling moth
• Precautions
2. Other Pear Calendar Sections
• Dormant
• Green tip
• White bud (white petals showing on flowers)
• Bloom
• Petal fall
• First cover
• Special spray (when monitoring indicates the need at First cover)
• Summer sprays
• Second cover
• Special sprays (when monitoring indicates the need about mid-Aug. and early Sept.)
• Postharvest fruit treatment
3. Other Information on Pears
   • Thinning pears
   • Notes on Tender Fruit Insects & Diseases
   • Table 7-9. Products Used on Pears
   • Table 7-11. Activity of Fungicides on Stone Fruit Diseases
   • Tender Fruit Nutrition
4. Pear Calendar PDF 130 KB
5. Chapter 7 - Tender Fruit Calendar PDF 401 KB
6. Related Links

Codling moth (first generation)(Special sprays)

• Materials: Use one of:
  • Assail 70 WP @ 170 g/ha
  • Calypso 480 SC @ 440 mL/ha
  • Altacor @ 215 g/ha
  • Delegate WG @ 420 g/ha
  • Guthion 50 WSB - see label
    or Sniper - see label
  • Imidan 50 WP @ 3.75 kg/ha
• Comments:Timing is critical for effective control. Use pheromone traps to time sprays. Apply insecticides between 83-138 DDC (base 10°C) after first sustained moth catch. See Degree-day modelling and determining a biofix.
  Imidan, Guthion, Sniper (OP insecticides): Apply for first generation codling moth at 138 DDC.
  Assail and Calypso: Apply 1-2 days earlier at (111-138 DDC) than OP insecticides. Calypso/Assail residues last 10-14 days. Do not apply as a border spray.
  Altacor and Delegate: Apply at 138 DDC. Residues last 10-14 days. Do not apply as a border spray.

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 7-9. Products Used on Pears.

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