Publication 360 - Apricot Calendar for Ontario

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The Apricot Calendar is an excerpt from Publication 360 - Fruit Production Recommendations, 2006 - 2007 version

Table of Contents

1. Pub 360 Chapter 10 - Tender Fruit (Stone Fruit and Pears) - Apricot Calendar pgs. 223 - 224 - (Pdf format 79k)
2. Dormant (in late March or early April before buds swell)
3. Prebloom (when blossom buds show pink)
4. Shuck split (when about 50% of shucks have split)
5. Shuck fall (10 - 12 days after last spray)
6. First cover (10 - 12 days after Shuck fall)
7. Special sprays (when monitoring indicates the need)
8. Prepick to harvest
9. Table 10-9. Products Used on Apricots

Read the label and follow all safety precautions.
Consult the product label for suggested water volumes. Otherwise, use enought water to ensure thorough spray coverage. Where the product rate is listed in amount/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.
For resistance management, refer to Pest Resistance to Insecticides, Fungicides, Miticides, on page 54.
For preharvest interval, re-entry period, maximum number of applications and chemical group, see Table 10-9. Products Used on Apricots, on page 224.

**Page numbers refer to pages in Publication 360 - Fruit Production Recommendations**

Dormant (in late March or early April before buds swell)

Diseases and Insects

• European red mite

Materials and Amount/ha

• Superior 70 Oil @ 20 L/ 1,000 L water

Comments

Apply in a high volume spray to ensure thorough coverage. Do not apply Captan or Maestro within 14 of oil.

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Prebloom (when blossom buds show pink)

Diseases and Insects

• Brown rot
• Blossom blight

Materials and Amount/ha

• Topas 250 E @ 500 mL
• Rovral @ 1.50 kg
• Supra Captan 80 WDG @ 4.50 kg
  or Maestro 80 DF @ 4.50 kg
• Vangard 75 WG @ 370 g
• Indar 75 WSP @ 140 g
• Lance WDG @ 370 g
• Mission 418 EC @ 300 mL

Comments

Apricots are extremely susceptible to brown rot at blossom time and just before picking. To avoid resistance, do not apply Topas, Rovral, Indar, Lance or Vangard more than two times for each product per season. Alternate between fungicide families and do not use the same product in consecutive sprays. See Pest Resistance to Insecticides, Fungicides, Miticides, on page 54 and Table 10-9. Products Used on Apricots, on page 224.

Do not apply insecticides while pears are in bloom. See bee poisoning on page 79.

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Shuck split (when about 50 % of shucks have split)

Diseases and Insects

• Brown rot

Materials and Amount/ha

• Topas 250 E @ 500 mL
• Rovral @ 1.50 kg
• Supra Captan 80 WDG @ 4.50 kg
  or Maestro 80 DF @ 4.50 kg
• Vangard 75 WG @ 370 g
• Indar 75 WSP @ 140 g
• Lance WDG @ 370 g
• Mission 418 EC @ 300 mL

Comments

Apricots are extremely susceptible to brown rot. To avoid resistance, do not apply Topas, Rovral, Indar, Lance or Vangard more than two times for each product per season. Alternate between fungicide families and do not use the same product in consecutive sprays.

Diseases and Insects

• Plum curculio

Materials and Amount/ha

• Guthion Solupak @ see label
  or Sniper @ see label
• Sevin XLR @ 6.25 L

Comments

Apricots are very susceptible to plum curculio. Scout edges of orchards near woodlots and wild hosts in spring. Check small fruit for crescent-shaped egg laying scars. Damage often occurs only on the border of the orchard. Check developing fruit for new damage seven to ten days after insecticide is applied.

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Shuck fall (10-12 days after last spray)

Diseases and Insects

• Brown rot

Materials and Amount/ha

• Topas 250 E @ 500 mL
• Rovral @ 1.50 kg
• Supra Captan 80 WDG @ 4.50 kg
  or Maestro 80 DF @ 4.50 kg
• Vangard 75 WG @ 370 g
• Indar 75 WSP @ 140 g
• Lance WDG @ 370 g
• Mission 418 EC @ 300 mL

Comments

Choose a different product than used previously this season. Rotate products from different families.

Diseases and Insects

• Plum curculio

Materials and Amount/ha

• Guthion Solupak @ see label
  or Sniper @ see label
• Sevin XLR @ 6.25 L

Diseases and Insects

• Lesser peachtree borer
• Peachtree borer

Materials and Amount/ha

• Thiodan 50 WP @ 1.50 kg / 1,000 L
  or Thionex 50 W @ 1.50 kg / 1,000 L
  or Thiodan 4 EC @ 1.75 L / 1,000 L
• Sevin XLR @ 6.25 L

Comments

Peachtree borers are sporadic pests. In areas with high borer populations, follow this spray regime. Use pheromone traps to monitor adult activity and begin sprays at first flight. Make three applications at five to ten day intervals. Direct these sprays with a handgun to cover trunk and scaffold limbs thoroughly; do not spray fruit. Check the days to harvest interval, on page 224.

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First cover (10-12 days after Shuck fall)

Diseases and Insects

• Brown rot

Materials and Amount/ha

• Use one of the fungicides listed under Shuck split.

Diseases and Insects

• Plum curculio

Materials and Amount/ha

• Use one of the insecticides listed for plum curculio at Shuck split.

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Special sprays (when monitoring indicates the need)

Diseases and Insects

• European red mite

Materials and Amount/ha

• Kelthane 50 W @ 3.25 kg
• Envidor 240 SC @ 0.75 L

Comments

European red mite is a sporadic pest and is rarely a problem in apricot orchards. Apply when red mites build up to ten active stages per leaf in the absence of beneficial predatory mites. Do not apply Kelthane or Envidor more than once per season.

Diseases and Insects

• Leafrollers

Materials and Amount/ha

• Dipel 2X DF @ 1.12 kg
• Success 480 SC @ 182 mL

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Prepick to harvest

Diseases and Insects

• Brown rot

Materials and Amount/ha

• Use one of the fungicides listed under Shuck split.

Comments

Apricots are extremely susceptible to brown rot just before picking. Additional sprays may be required during harvest if conditions are wet. The rate for Vangard at this time is 740 g/ha.

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Table 10-9. Products Used on Apricots

Use this table as a guide, but refer to product label for specific information.

The preharvest interval is the number of days between the last spray and first harvest.

The re-entry period is the minimum interval that must be observed between applying the pesticide and working in the treated crop without protective equipment. If no re-entry period is stated on the label, assume that the spray solution must be dry before re-entry can occur.

The maximum number of applications is the labelled maximum number for the growing season, and may be higher than what is recommended for resistance management or for preserving beneficial insects.

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