Publication 360, Fruit Production Recommendations:
Pear Calendar - Green tip

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

1. Green tip
   • Scab
   • European red mite, Pear psylla
   • Pear psylla
   • Oriental fruit moth
   • Precautions
2. Other Pear Calendar Sections
   • Dormant
   • Green tip
   • White bud (white petals showing on flowers)
   • Bloom
   • Petal fall
   • Special spray (when monitoring indicates the need at 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

Scab (Green tip)

• Materials: Use one of:
  • Supra Captan 80 WDG @ 3.75 kg/ha
    or Maestro 80 DF @ 3.75 kg/ha
  • Dikar @ 6.75 kg/ha
  • Flint 50 WG @ 140 g/ha
  • Sovran @ 240 g/ha
  • Pristine WG @ 1.0-1.2 kg/ha
  • Scala SC @ 1.0 L/ha
  • Equal 65 WP @ 3.25 kg
  • Serenade MAX @ 3.0-6.0 kg/ha
• Comments: Start scab control early and repeat the spray if weather remains wet.
  Captan or Maestro: Do not use on d'Anjou pears. Do not use within 14 days of an application of Superior Oil.
  Dikar: If used at 10 day intervals, controls pear scab and pear psylla nymphs. It also suppresses European red mite and rust mite populations. Higher water volumes aid in mite suppression.
  Sovran, Flint and Pristine: Not recommended for use at this stage due to resistance management considerations and label restrictions on the maximum number of allowable sprays. These materials should not be used until the immediate prebloom growth stage or later, when they are likely to be most beneficial.
  Scala: Do not apply postbloom.
  Serenade MAX: Provides suppression rather than control of pear scab. See Table 2-6. Efficacy Ratings for Pesticides, and notes on Bacillus subtilis (Serenade ASO, Serenade MAX).
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Pear scab

European red mite, pear psylla (Green tip)

• Materials: Use one of:
  • Superior 70 Oil @ 20 L/ 1,000 L water
• Comments: Best applied at or near Green tip for mites. Use 2,000-3,000 L of water per ha. Good coverage is essential. Oil does not control rust mite. Do not apply full rate of oil more than once per season.
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Pear psylla
    • Mites

Pear psylla (Green tip)

• Materials: Use one of:
  • Movento 240 SC @ 365 mL/ha
  • Ambush 500 EC @ 400 mL/ha
  • Surround WP @ 50.0 kg/ha
• Comments:Surround: Begin spray program before overwintering adults are active. Make two applications at 50 kg/ha, 7 days apart, to establish a base layer. Continue applications at 7-14 day intervals. Surround may interfere with optimum bee activity. Do not apply Surround during the green cluster bud to petal fall stage.
  See notes on Kaolin Clay (Surround WP).
  Movento: Has slow activity; control may not be apparent for 2-3 weeks. Under high pressure a second application may be necessary 2 weeks later. Do not use when fruit is present due to the possibility of injury. See the Movento label for additional details. If psylla pressure is high, use the higher labelled rate of 435 mL/ha. Do not exceed 1.83 L/ha per year.
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Pear psylla

Oriental fruit moth(Green tip)

• Materials: Use one of:
  • Isomate-M Rosso @ 500 dispensers/ha
    
  • Isomate-M 100 @ 250 dispensers/ha
• Comments: Pheromone mating disruption products will not control other pests that may be present in the orchard. Initial OFM population must be low. Use in square or rectangular orchard blocks at least 4 ha in size. Apply before moth flight begins. For more information on mating disruption, see Using mating disruption in fruit crops, and Using mating disruption to control oriental fruit moth (Isomate-M Rosso and Isomate-M 100), and OMAFRA Factsheet Mating Disruption for Management of Oriental Fruit Moth in Stone and Pome Fruit, Order No. 04-029.
  Isomate-M 100: Make a second application 75-80 days after the first.
  Isomate-M Rosso: Provides mating disruption for up to 120 days. In crops with long field seasons, make a second application.
  If desired, use both an insecticide and mating disruption for managing first generation OFM (see Petal fall).
• Learn more:
  • Notes on Tender Fruit Insects & Diseases
    • Oriental fruit moth

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