How green is white light? A comparison of basil growth under green or white enriched LED light regimes

Bochenek, Grazyna M.; Fällström, I.

doi:10.17660/actahortic.2015.1107.43

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…It is unlikely that the DWC system itself contributed to low yield in the greenhouse given that fish feeding levels were comparable among treatments and yield in the Floating raft DWC with yellow perch were not statistically different from the soilless medium control (Table 4). Similarly, LED lighting was also used in the rack systems with goldfish and tilapia and did not impact basil growth in a previous study (Bochenek & Fällström, 2015).…”

Section: Resultsmentioning

confidence: 99%

Basil, Ocimum basilicum, yield in northern latitudinal aquaponic growing conditions

Abbey

Anderson

Yue

et al. 2021

J World Aquaculture Soc

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The need for yield research is increasing with the popularity of aquaponic food production systems where plants and fish are grown together in a recirculating system. Our objective was to compare the yield of three basil cultivars (“Elenora,” “Genovese,” “Nufar,” Ocimum basilicum) in four configurations (greenhouses: floating raft DWS, ebb & flow, A‐frame; warehouse: floating raft; 1–8 tank replications/treatment) as well as a soilless control to establish a baseline for aquaponic producers in northern latitudes. We also tested whether basil yield varied among fish types: yellow perch, Perca flavescens, goldfish, Carassius auratus, tilapia, Oreochromis spp., and koi, Cyprinus carpio. Fish tank water temperature, nitrite, and alkalinity levels differed significantly over seasons (summer, winter). There was a significant decrease in basil production in all aquaponic systems that used koi (greenhouse, warehouse). No significant difference in basil yield was found among greenhouse and aquaponic systems for perch, tilapia, or goldfish nor among the basil “Elenora,” “Genovese,” and “Nufar.” Considerable variation occurred in yield although most of it occurred in fresh weights, being reduced significantly in dry weights. The effects of growing koi fish on reducing aquaponic production of basil is noteworthy, although future research is needed to the exact cause.

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Section: Resultsmentioning

confidence: 99%

Basil, Ocimum basilicum, yield in northern latitudinal aquaponic growing conditions

Abbey

Anderson

Yue

et al. 2021

J World Aquaculture Soc

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Evaluation of the Effectiveness of Different LED Irradiators When Growing Red Mustard (Brassica juncea L.) in Indoor Farming

et al. 2022

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Investigation is devoted to the optimization of light spectrum and intensity used for red mustard growing. Notably, most of the studies devoted to red mustard growing were conducted on micro-greens, which is not enough for the development of methods and recommendations for making the right choices about the irradiation parameters for full-cycle cultivation. In this study, we tested four models of LED with different ratios of blue, green red and far red radiation intensity: 12:20:63:5; 15:30:49:6; 30:1:68:1, in two values of photon flux density (PFD)—120 and 180 µmol m−2 s−1—to determine the most effective combination for red mustard growing. The study was conducted in a container-type climate chamber, where the red leaf mustard was cultivated in hydroponics. On the 30th day of cultivation, the plant’s morphological, biochemical and chlorophyll fluorescence parameters, and reflection coefficients were recorded. The results indicated that the PFD 120 µmol m−2 s−1 had a worse effect on both mustard leaf biomass accumulation and nitrate concentration (13–30% higher) in the plants. The best lighting option for growing red mustard was the blue–red spectrum, as the most efficient in terms of converting electricity into biomass (77 Wth/g). This light spectrum contributes to plant development with a larger leaf area (60%) and a fresh mass (54%) compared with the control, which has a maximum similarity in spectrum percentage to the sunlight spectrum. The presence of green and far red radiation with the blue–red light spectrum in various proportions at the same level of PFD had a negative effect on plant fresh mass, leaf surface area and photosynthetic activity. The obtained results could be useful for lighting parameters’ optimization when growing red mustard in urban farms.

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How green is white light? A comparison of basil growth under green or white enriched LED light regimes

Cited by 2 publications

References 15 publications

Basil, Ocimum basilicum, yield in northern latitudinal aquaponic growing conditions

Basil, Ocimum basilicum, yield in northern latitudinal aquaponic growing conditions

Evaluation of the Effectiveness of Different LED Irradiators When Growing Red Mustard (Brassica juncea L.) in Indoor Farming

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