Strawberry nutritional requirements
Roles of nutrients at key growth stages
Post harvest to New growth or Establishment
Nitrogen - to build reserves in the crown for recycling and subsequent growth of new leaves in the spring
Phosphorus, calcium, boron, and zinc – to maximise strong root development and support new growth
Potassium – for good plant development
Vegetative growth
Nitrogen - main doses are required at this stage for leaf and plant expansion
Phosphorus - to meet uptake needs through to flowering
Potassium – to promote nstrong leaf growth and build a strong plant development
Calcium – to build levels in the plant and maintain a steady supply to developing tissues
Sulphur and magnesium - to maintain vigorous, healthy leaf growth and to improve plant supplies
Micronutrients - to ensure photosynthetic growth is not limiting
Flowering to fruit set
Potassium – peak demand for berry development and to build berry quality
Nitrogen - in reduced amounts so as not to compromise fruit stability
Phosphorus - to meet uptake needs through to flowering
Calcium and magnesium - to support new tissue development and boost fruit integrity, reduce disease and maximise shelf life
Boron - for good pollen production, seed formation and fruit set
Other micronutrients - as needed to maintain growth
Fruiting to maturity
Potassium – to maximise fruit quality, particularly TSS, acidity and taste.
Phosphorus - to to up levels being redistributed to the fruit
Nitrogen - limited quantities to balance other nutrients - excessive N at this stage can spoil fruit, but too little N reduces fruit size
Boron and Calcium - for fruit strength
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