Summary
This study evaluated 'Friariello' pepper grown using nutrient film technique (NFT) hydroponics across two seasonal cycles and four nutrient solution electrical conductivities. Winter-summer crops produced significantly higher yields than spring-autumn ones, with optimal EC varying by season (3.8 mS/cm for winter-summer, 4.1 mS/cm for spring-autumn). Higher EC (4.4 mS/cm) improved fruit antioxidant and carotenoid content whilst reducing water consumption, suggesting opportunities to optimise both production efficiency and nutritional quality through targeted nutrient management.
Regional applicability
The study was conducted in Italy and employed controlled hydroponic production, which is relevant to United Kingdom glasshouse and protected horticulture sectors. Findings on EC optimisation and seasonal variation in yield and quality are transferable to UK commercial pepper production under protection, though UK seasonal light and temperature profiles differ from Mediterranean conditions and may require adjusted growing schedules.
Key measures
Electrical conductivity (EC: 3.5, 3.8, 4.1, 4.4 mS/cm); fruit yield; water consumption; macronutrient absorption; ascorbic acid content; α-carotene content; antioxidant levels
Outcomes reported
The study measured fruit yield, water consumption, macronutrient absorption, and fruit quality parameters (ascorbic acid, α-carotene, and antioxidants) in hydroponically grown 'Friariello' pepper under different electrical conductivity levels and seasonal cycles.
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