Summary
This study evaluated double recirculating aquaponic systems (DRAPS)—which combine separate recirculating aquaculture and closed hydroponic cycles—as an alternative to conventional intensive tomato production. Over one annual production cycle in 2015, DRAPS tomatoes demonstrated comparable plant growth, fruit yield, and nutrient contents to those produced in conventional hydroponics, suggesting that the unidirectional nutrient transfer from fish waste water to plants can sustain commercial-scale production without compromising horticultural performance or requiring feedback effects on fish rearing.
Regional applicability
The study was conducted at an unspecified location and does not provide UK-specific climate or regulatory context. Transferability to United Kingdom glasshouse production would depend on local energy costs, water availability, and compliance with aquaculture and hydroponic production regulations, which may differ substantially from the study conditions.
Key measures
Plant growth parameters, fruit quantity, fruit quality, nutrient contents of tomatoes
Outcomes reported
The study compared growth, development, fruit quantity, fruit quality, and nutrient contents of tomatoes produced in double recirculating aquaponic systems (DRAPS) versus conventional hydroponics over one annual production cycle. Both production methods yielded comparable plant growth, fruit yield, and nutrient composition.
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