Strawberries

  • Maintain good weed control. Dandelion and chickweed infestations can contribute to tarnished plant bug damage, which is an issue in day-neutrals.
  • Application of nutrients - primarily nitrogen (N) - should be done as soon as June bearer harvest is complete - 50 pound per acre N, phosphorus (P) and potassium (K). Make second application in mid-August -15 to 20 lb. per acre N, using calcium nitrate.
  • Mowing old leaves of June-bearing strawberries at renovation should only be done if harvest and mowing can be completed by August 5.
  • Irrigation - if not supplied by rainfall - should continue at this runnering stage of June bearers.
  • Day-neutral strawberries will require constant N feeding until end of August - so 10 to 20 lb. actual N per acre per month. It may be split into weekly or bi-monthly applications.
  • Consider field cooling of strawberries if temperatures exceed 30 C. Day-neutral flower bud formation ceases at 26 to 28 C. Failure to cool will result in the conspicuous absence of the next month’s crop.

Saskatoon berries

  • Ensure any off-plant types, such as chokecherries, are pruned out of the saskatoon berry rows prior to harvest.
  • Reduce soil moisture after harvest to encourage plants to harden-off.
  • Harvest at night or early morning to take advantage of fruit temperatures, which reduces cooling requirements.
  • Cool crop immediately after harvest to preserve produce quality.
    • Ensure that there is airflow through the harvested product to cool quicker.
    • If freezing the graded crop, consider that smaller quantities or thin layers will freeze quicker than bulk quantities. That will affect final quality of the frozen product.

Vegetables

  • Harvest product at appropriate stages, giving consideration to cost of harvesting versus total yield.
    • Multiple harvests of each planting can increase total yield but quality and returns may be higher for early harvest of each planting.
  • Cool harvested product quickly to slow down post-harvest degradation.
  • Final washes and rinses should be done using potable water.

Greenhouse ornamentals

  • If holding plants for extended periods, ensure plants are kept healthy, fertilized and free from pests. Apply sufficient water, maintenance fertilizer, etc. when needed.
  • Clear out older stock as quickly as possible.

General

  • Adjust irrigation as soil moisture conditions and plant requirements change.
    • As plants begin to mature and fruit fills, moisture requirements typically increase.
    • Maintain soil moisture levels through harvest, particularly during fruit formation and filling.
  • If June was particularly wet and you have sandy soils, N levels in the soil may be depleted. Apply N lightly as heavy applications can lead to soft fruit and plants.

Pest monitoring and management

  • Continue to monitor disease and insect pest development and make appropriate controls, while adhering to pre-harvest interval and re-entry interval restrictions.
  • Remove or prune out diseased plant material.
  • Check out the Pest Management Regulatory Agency for up-to-date information on registered pesticides.
  • Abandonment - ploughing under - an annual crop can sometimes be more cost effective than trying to salvage a heavily infested crop with chemical sprays that effect weeds, insects or disease.
  • Consider cultural pest control practices such as exclusion, row covers, netting, etc.
  • Raspberries
    • Monitor for spider mites and control if necessary.
    • Examine primocane growth on floricanes for spur blight infection. Plan post-harvest fungicide spray if identified.
  • Saskatoon berries
    • Continue to monitor for entomosporium and apply fungicides with short pre-harvest interval if necessary.
      • Do not exceed seasonal maximum number of applications.
    • If woolly elm aphids are an issue, application of Orthene, Alias or Admire is permitted on bearing and non-bearing plants.
      • Apply as close to peak aphid migration as possible – early to mid-July to mid-August, depending on the crop and season.
      • Apply after harvest in bearing plants. Alias and Admire may be applied during a short pre-harvest interval window of 14 days.
  • Greenhouse ornamentals
    • Monitor for spider mites and aphids, as well as foliar diseases such as powdery mildew.
    • Correct situations that encourage fungus gnats.

Contact

Connect with the Alberta Ag-Info Centre:

Hours: 8 am to 5 pm (open Monday to Friday, closed statutory holidays)
Toll free: 310-FARM (3276)