Irrigation Cycle Optimization and Water Management in Stevia Production in Vertical Hydroponic Systems

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dc.authorid0000-0002-4574-6573
dc.authorid0009-0001-8546-7480
dc.authorid0000-0001-8886-5348
dc.authorid0000-0002-9875-7321
dc.authorid0009-0002-8621-0959
dc.authorid0000-0002-7247-9116
dc.contributor.authorÇetintaş, Aydın Ozan
dc.contributor.authorApaydın, Halit
dc.contributor.authorKunter, Burak
dc.contributor.authorTuran, Özlem
dc.contributor.authorÇakın, Irmak
dc.contributor.authorKantoğlu, Kadriye Yaprak
dc.date.accessioned2026-09-01T13:15:20Z
dc.date.available2026-09-01T13:15:20Z
dc.date.issued2026-05-19
dc.departmentTENMAK-Nükleer Enerji Araştırma Enstitüsü-Ankara
dc.description.abstractVertical hydroponic systems are becoming a key component of sustainable agriculture by enabling year-round production in limited space and closed-loop water management. In this study, the effects of irrigation cycling on the growth, biomass, biochemical quality, and water use efficiency of Stevia rebaudiana Bertoni in vertical hydroponic systems were investigated. The experiment was conducted under four irrigation cycle conditions—each defined by a different off-time per tower (H1: 150 s, H2: 300 s, H3: 450 s, H4: 600 s) with a fixed 15-second on-time—in four independent towers each with 21 planting slots. Seedlings obtained from the same individual were distributed in a balanced short-to-long arrangement to standardize initial conditions. The 300-second off-time group (H2) achieved the highest values in dry biomass (1.90 ± 1.04 g/plant), total phenolic content (7.14 ± 0.34 mg gallic acid equivalents/g), DPPH antioxidant activity (5.90 ± 0.15 mmol Trolox equivalent/g), and yield-based water use efficiency (3.17 g/L). The group with the longest off-time (H4: 600 s) reduced water consumption but fell notably behind in biomass and quality parameters. Stem length on day 30 showed a strong Spearman correlation with dry weight (ρ = 0.873, p < 0.001), suggesting that non-destructive dimensional measurements can serve as practical biomass predictors. The findings demonstrate that a 300-second off-time simultaneously optimizes growth, biochemical quality, and water efficiency in vertical hydroponic Stevia production, and indicate that irrigation cycle design should consider product quality and biomass yield integrity alongside water savings.
dc.identifier.doi10.24925/turjaf.v14i8.2167-2177.8988
dc.identifier.eissn2148-127X
dc.identifier.endpage2177
dc.identifier.startpage2167
dc.identifier.urihttps://kurumsalarsiv.tenmak.gov.tr/handle/20.500.12878/2104
dc.identifier.volume14(8) 2026
dc.institutionauthorÇetintaş, Aydın Ozan
dc.institutionauthorKunter, Burak
dc.institutionauthorTuran, Özlem
dc.institutionauthorÇakın, Irmak
dc.institutionauthorKantoğlu, Kadriye Yaprak
dc.language.isoen
dc.publisherTurkish Science and Technology Publishing (TURSTEP)
dc.relation.journalTurkish Journal of Agriculture - Food Science and Technology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectStevia rebaudiana
dc.subjectVertical farming
dc.subjectHydroponic irrigation
dc.subjectWater use efficiency
dc.subjectPhenolic content
dc.titleIrrigation Cycle Optimization and Water Management in Stevia Production in Vertical Hydroponic Systems
dc.typearticle
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