Publication 360 - Strawberry Calendar (Non-Bearing) for Ontario

Table of Contents

1. Strawberry Calendar (Non-bearing)
   • Early June
   • One month after planting and again once or twice at 2 week intervals
   • July to mid-August
   • Mid-August and once or twice at 2-week intervals
   • Fall
2. Other Information on Strawberries
   • Strawberry Nutrition
   • Choosing a Miticide for Strawberries
   • Management Practices to Reduce Pesticide Use
   • Notes on Insects and Diseases on Strawberries
     • Table 5-17. Products Used on Strawberries
     • Table 5-18. Activity of Fungicides on Strawberry Diseases
     • Table 5-19. Activity of Insecticides on Strawberry Pests
     • Table 5-20. Miticides Registered on Strawberries
     • Table 5-21. Strawberry Variety Disease Ratings
3. Other Information on Berries
   • Blueberries
   • Currant and Gooseberries
   • Raspberries
   • Saskatoons
4. Chapter 5 - Strawberry Calendar - PDF 14 kb
5. Pub 360 Chapter 5, Berry Crops - PDF 311 kb
6. Related Links

Strawberry Calendar (Non-bearing)

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 family groups to help prevent pest resistance.

Check Table 5-17. Products Used on Strawberries.

Early June

Pests

• Strawberry leafroller

Materials and Amount/ha

• Malathion 25 W @ 4.25 kg
  

One month after planting and again once or twice at 2 week intervals

Pests

• Leaf blight
• Leaf scorch
• Common Leaf spot

Materials and Amount/ha

• Copper 53 W @ 3.80 kg
  
  
• Equal 65 WP @ 1.75 kg
  
  
• Supra Captan 80 WDG @ 4.25 kg
  or Maestro 80 DF @ 4.25 kg
  
  
• Topas 250 E @ 500 mL
  
  
• Pristine WG @ 1.30

Comments

To control common leaf spot, ensure good coverage of the lower leaf surface. Spray susceptible varieties such as Jewel, Mira, Kent, Veestar, MicMac.

Spray copper alone. For instructions on mixing copper sprays see Use of Copper Products on Fruit Crops.

Equal: Labeled for leaf scorch, leaf spot and leaf blight; the others are labeled for leaf spot only. Equal may injure plants under cold weather conditions.

July to mid-August

Pests

• Potato leafhopper

Materials and Amount/ha

• Malathion 25 W @ 4.25 kg

Comments

Potato leafhoppers migrate long distances and can be especially problematic after nearby hay fields are mowed. Check underside of leaves and spray when nymphs are present. Repeated applications may be necessary.

Learn more

• Notes on Strawberry Diseases and Insects
  • Potato leafhopper

Pests

• Powdery mildew

Materials and Amount/ha

• Nova 40 W @ 340 g
  
  
• Pristine WG @ 1.60 kg

Comments

Begin applications on susceptible varieties (Annapolis, Jewel, Veestar) when red leaf speckling first appears or when conditions (warm humid weather, or frequent dews) favour development. Alternate with other fungicides.

Pests

• Common Leaf Spot

Materials and Amount/ha

• Topas 250 E @ 500 mL
  
  
• Pristine WG @ 1.30 kg

Comments

If leaf spot is present, continue fungicide applications at regular intervals, prior to wetting periods.

Mid-August and again once or twice at 2-week intervals

 
Pests

• Powdery mildew

Materials and Amount/ha

• Nova 40 W @ 340 g
  
  
• Pristine WG @ 1.60 kg

Comments

Begin applications on susceptible varieties (Annapolis, Jewel, Veestar) when red speckling appears on the leaves, or when conditions (warm humid weather or frequent dews) favour development. Alternate with other fungicides.

Pests

• Leaf blight
• Leaf scorch
• Common leaf spot
  

Materials and Amount/ha

• Copper 53 W @ 3.80 kg
  
  
• Equal 65 WP @ 1.75 kg
  
  
• Supra Captan 80 WDG @ 4.25 kg
  or Maestro 80 DF @ 4.25 kg
  
  
• Topas 250 E @ 500 mL
  
  
• Pristine WG @ 1.30 kg

Comments

To control leaf spot, ensure good coverage of the lower leaf surface. Spray susceptible varieties such as Jewel, Mira, Kent, Veestar, MicMac.

Equal: Labeled for leaf scorch, leaf spot and leaf blight; the others are labeled for leaf spot only. Equal may injure plants under cold weather conditions.

Spray copper alone. For instructions on mixing copper sprays see Use of Copper Products on Fruit Crops.

Fall

Pest

• Red stele

Materials and Amount/ha

• Ridomil Gold 480 SL @ 1.00 L
  
  
• Aliette WDG @ 5.60 kg

Comments

This disease is sporadic and favoured by wet or compacted soil, and susceptible varieties (Table 5-21. Strawberry Variety Disease Ratings). To reduce the chance of resistance, spray only where red stele has been observed or a high risk situation occurs.

Ridomil Gold: Make one application in early September and a second treatment in late October but no later than October 31. Apply in sufficient water (2,500 L/ha) to ensure movement into the root zone.

Aliette: Make up to four applications per season, two in spring and two in fall. Apply as a foliar spray in spring when plants start active growth. Apply at 30–60 day intervals. Make fall applications when soil conditions favour disease development (e.g. high soil moisture, cool temperatures).

Related Links

• 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