Publication 360, Fruit Production Recommendations:
Strawberries (Fruiting Years) - First bloom

Table of Contents

1. First bloom
   • Tarnished plant bugs
   • Botrytis grey mold
   • Anthracnose fruit rot
   • Precautions
2. Other Strawberry Calender (fruiting years) sections
   • When new growth appears
   • When flower buds are visible in the crown
   • As flower buds extend from crown
   • 7 to 10 days after first bloom
   • Preharvest
   • Renovation (after mowing)
   • Renovation (after mowing, to new growth)
   • Mid-August and again once or twice at 2-week intervals
   • Fall
3. 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
4. Strawberry Calender (Fruiting Years) PDF 229 kb
5. Pub 360, Chapter 5, Berry Crops - PDF 364 kb
6. Related Links
   

Insecticides are very toxic to bees. Do not spray when bees are working. Spray in the evening. See Bee Poisoning.

Tarnished plant bugs (First bloom)

• Materials: Apply one of;
  • Cygon 480 AG @ 2.75 L/ha
  • Ripcord 400 EC @ 250 mL/ha or Up-Cyde 2.5 EC @ 400 mL/ha
  • Decis 5 EC @ 200 mL/ha
  • Matador 120 EC @ 104 mL/ha or Silencer 120 EC @ 104 mL/ha
  • Thiodan 4 EC @ 2.50 kg
• Comments: Check frequently during bloom and green fruit stage 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 thresholds and monitoring details, visit www.ontario.ca/cropipm.
  Cygon: Very toxic to bees, use well before bloom.
  Ripcord, Up-Cyde, Decis, Matador or Silencer (pyrethroid insecticides): These products, except Decis, also control clipper weevil. Insecticides in this group are associated with outbreaks of spider mites and cyclamen mites. Avoid consecutive applications.
  Thiodan, Ripcord, Up-Cyde, Matador, Silencer or Decis: These products also control spittlebug.
• Learn more:
  • Notes on Strawberry Diseases and Insects
    • Tarnished plant bug

  
  

Botrytis grey mould (First bloom)

Ensure good spray coverage to 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. Choose fungicides from different chemical groups and use them in rotation. See Table 2-11. Fungicide/Bactericide Groups Based on Sites of Action.

• Materials: Apply one of;
  • Rovral @ 2.00 kg/ha
  • Elevate 50 WDG @ 1.70 kg/ha
  • Supra Captan 80 WDG @ 4.25 kg/ha or Maestro 80 DF @ 4.25 kg/ha
    
  • Folpan 80 WDG @ 2.50 kg/ha
  • Lance WDG @ 560 g/ha
  • Pristine WG @ 1.30 kg/ha
  • Scala SC @ 2.00 L/ha
  • Switch 62.5 WG @ 975 g/ha
  • Serenade ASO @ 4.0-15.0L/ha
  • Actinovate SP @ 425g/ha
• Comments: Ensure good spray coverage to 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. Choose fungicides from different chemical groups and use them in rotation. See Table 2-11. Fungicide/Bactericide Groups Based on Sites of Action.
  Pristine and Lance: Both contain active ingredients in the same fungicide group. Do not alternate Pristine with Lance.
  Scala and Switch: Both contain active ingredients in the same fungicide group. Do not alternate Switch with Scala.
  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: 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 (First bloom)

• Materials: Apply one of;
  • Cabrio EG @ 1.00 kg/ha
  • Pristine WG @ 1.30 kg/ha

• Comments: Bloom is the best time to control this disease. Warm wet weather during bloom favours the development of anthracnose fruit rot.
  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.
• Learn more:
  • Notes on Strawberry Diseases and Insects
    • Anthracnose

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.

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