Publication 360, Fruit Production Recommendations:
Strawberries (Fruiting Years) - 7 to 10 days after first bloom

Table of Contents

1. Tarnished Plant bugs
2. Botrytis grey mold
3. Anthracnose fruit rot
4. Thrips
5. Precautions
6. Learn more
7. Other Strawberry Calender sections (Fruiting Years)
   • When new growth appears
   • When flower buds are visible in the crown
   • As flower buds extend from crown
   • First bloom
   • Preharvest
   • Renovation (after mowing)
   • Renovation (after mowing, to new growth)
   • Mid-August and again once or twice at 2-week intervals
   • Fall
8. Other Information on Strawberries
   • Strawberry Nutrition
   • Strawberry Calendar (Non-Bearing)
   • Notes on Insects and Diseases on Strawberries
     • Table 5-19. Products Used on Strawberries
     • Table 5-20. Activity of Fungicides on Strawberry Diseases
     • Table 5-21. Miticides Registered on Strawberries
     • Table 5-22. Activity of Insecticides on Strawberry Pests
     • Table 5-23. Strawberry Variety Disease Ratings
9. Other Information on Berries
   • Blueberries
   • Currant and Gooseberries
   • Raspberries
   • Saskatoons
10. Pub 360 Chapter 5 - Strawberry Calendar - (PDF 229 KB)
11. Related Links

Tarnished plant bugs (7 to 10 days after first bloom)

Check frequently for small green tarnished plant bug nymphs. Shake blossom clusters and fruit trusses over a shallow dish. Watch for soft-bodied green insects that move quickly to escape. For monitoring details and thresholds, see OMAFRA Factsheet, Tarnished Plant Bug, Order No. 92-108.

• Materials: Apply one of;
  • Ripcord 400 EC @ 250 mL or Up-Cyde 2.5 EC @ 400mL
  • Decis 5 EC @ 200 mL
  • Matador 120 EC @ 104 mL or Silencer 120 EC @ 104mL
    • Comments: Pyrethroid insecticides (Ripcord, Decis, Matador): Associated with outbreaks of spider mites and cyclamen mites. Avoid consecutive applications of pyrethroid insecticides.
• Thiodan 50 WP @ 2.00 kg

Botrytis grey mould (7 to 10 days after first bloom)

Keep all flower parts protected with fungicide during bloom. Typically 2–3 sprays at 7–10 day intervals during bloom will give good control. Use shorter spray intervals (i.e. 5–7 days) during wet weather. Alternate with fungicides from different families. See Table 2-8. Fungicide/Bactericide Groupings Based on Sites of Action.

• Materials: Apply one of;
  • Rovral @ 2.00 kg
  • Elevate 50 WDG @ 1.70 kg
  • Supra Captan 80 WDG @ 4.25 kg or Maestro 80 DF @ 4.25 kg
    
  • Folpan 80 WDG @ 2.50 kg
  • Lance WDG @ 560 g
  • Pristine WG @ 1.30 kg
    • Comments: Pristine and Lance: Both contain active ingredients in the same fungicide family. Do not alternate Pristine with Lance.
  • Scala SC @ 2.00 L
  • Switch 62.5 WG @ 975 g
    • Comments: Scala and Switch: Both contain active ingredients in the same fungicide family. Do not alternate Switch with Scala.
  • Serenade ASO @ 4.0-15.0L
    • Comments: Serenade ASO: Provides suppression rather than control of botrytis grey mould; see Table 2-6. Efficacy Ratings for Pesticides. Expect best results from multiple applications or when used in rotation with other products. See Biopesticides for disease control, and notes on Bacillus subtilis (Serenade MAX, Serenade ASO).
  • Actinovate SP @ 425g
    • Comments: Actinovate: Provides suppression rather than control; see Table 2-6. Efficacy Ratings for Pesticides. Spray to wet foliage but avoid runoff. See Biopesticides for disease control and notes on Streptomyces lydicus (Actinovate).

Anthracnose fruit rot (7 to 10 days after first bloom)

Bloom is the best time to control this disease. Warm wet weather during bloom favours the development of anthracnose fruit rot.

• Materials: Apply one of;
  • Cabrio EG @ 1.00 kg
  • Pristine WG @ 1.30 kg
  • Comments: Pristine and Cabrio: Both contain active ingredients in the same fungicide family. Make no more than two consecutive applications of either product and then alternate with fungicides from different families. See Table 2-8. Fungicide/Bactericide Groupings Based on Sites of Action.

Thrips (7 to 10 days after first bloom)

• Materials:Delegate WG @ 280g
  • Comments: Check blossoms and under calyces for small thread-like yellow thrips. Expect more problems where insecticides have not been applied for tarnished plant bug. Delegate is registered for suppression, rather than control of thrips; see Table 2-6. Efficacy Ratings for Pesticides. Delegate is also labelled for greenhouse use.

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.

Products are listed according to insecticide and fungicide family groups. Use products from different groups to help prevent pest resistance. For resistance management refer to Pest Resistance to Insecticides, Fungicides, Miticides.

For information on strawberry pest identification, monitoring and thresholds, see ONTARIO CropIPM: Integrated Pest Management Training, available at www.ontario.ca/cropIPM or as OMAFRA Publication AF141 in CD format.

For re-entry period, maximum number of applications and chemical group, see Table 5-19. Products Used on Strawberries.

Learn more:

• Notes on Strawberry Diseases and Insects
  • Tarnished plant bug
  • Anthracnose

Related Links

• Notes on Strawberry Diseases and Insects
• OMAFRA Berry Index Page
• 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 75: Guide To Weed Control: Berry Crops