Summary
This experiment evaluated 12 nutrient solution treatments combining four potassium and three nitrogen levels on soilless strawberry production. Whilst 15 mol m−3 NO3− maximised yield, higher potassium concentrations (11 mol m−3) improved fruit nutraceutical quality; the authors suggest balancing these nutrients according to Steiner's Universal Nutrient Solution formulation optimises both yield and quality outcomes.
Regional applicability
The findings are applicable to United Kingdom protected horticulture, where soilless strawberry production is common. Recommendations for nutrient solution composition will require adaptation to UK climate conditions and cultivars, but the mechanistic insights into K–N interactions are transferable to UK greenhouse and polytunnel operations.
Key measures
Strawberry yield; nutraceutical quality; K+ concentration (5, 7, 9, 11 mol m−3); NO3− concentration (9, 12, 15 mol m−3); ionic concentration in nutrient solution
Outcomes reported
The study measured yield and nutraceutical quality of strawberries in response to varying potassium and nitrogen concentrations in a hydroponic nutrient solution. Interactive effects between K+ and NO3− on fruit production and quality parameters were quantified.
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