Beneficial Effects of Using a 3-D Led Interlighting System for Organic Greenhouse Tomato Grown in Canada Under Low Natural Light Conditions

Pépin, Steeve; Fortier, E.; Béchard-Dubé, S.A.; Dorais, Martine; Ménard, C.; Bacon, R.

doi:10.17660/actahortic.2014.1041.28

Cited by 15 publications

(12 citation statements)

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“…Regarding these parameters, different trends were found in previous studies. Some authors found that by increasing light intensity and DLI, plant height decreased and stem diameter increased [29][30][31], while for other authors, SL did not influence stem length and diameter [32]. Trends are often contradictory because stem growth is strictly influenced by other environmental factors, such as temperature and relative humidity [28], and, as we found during our experiment, it is cultivar-dependent (Figures 3 and 5).…”

Section: Plant Growth Yield and Light Efficiencysupporting

confidence: 47%

Supplemental LED Increases Tomato Yield in Mediterranean Semi-Closed Greenhouse

Palmitessa

Paciello²,

Santamaria

2020

Agronomy

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Supplemental light (SL) is a technique used to increase horticulture yield, especially in northern countries, where the Daily Light Integral (DLI) is a limiting factor during fall and winter, and which could also be used to obtain higher tomato yield at the Mediterranean latitude. In this study, three tomato hybrid (F1) cultivars were grown for year-round production in a commercial semi-closed glasshouse in Southern Italy: two of the cherry fruit-type (‘Juanita’ and ‘Sorentyno’) and one mini plum fruit-type (‘Solarino’). From 120 to 243 days after transplant, light-emitting diode (LED) toplights were used as SL, with a photoperiod of 18 h. The main climatic parameters inside and outside the glasshouse were recorded, and tomato plants’ development and yield were examined. Plants grown with LEDs had longer stems as compared to control treatment (9.53 vs. 8.79 m), a higher stem thickness and yielded more trusses. On average, the yield was 21.7% higher with LEDs. ‘Sorentyno’ was the cultivar with the highest cumulated productivity when it was grown under SL. However, the cultivar with best light use efficiency under LEDs was ‘Solarino’. Therefore, supplemental LED from mid-December until March enhanced tomato growth and yield, opening a favorable scenario for large-scale application of this technology also in the Mediterranean area.

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Section: Plant Growth Yield and Light Efficiencysupporting

confidence: 47%

Supplemental LED Increases Tomato Yield in Mediterranean Semi-Closed Greenhouse

Palmitessa

Paciello²,

Santamaria

2020

Agronomy

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“…Accordingly, the effects of supplemental interlighting systems on canopy architectural traits have been subject of several researches. In a greenhouse grown tomato [9], no effects on crop architecture (stem height, stem diameter, and leaf length) were observed when solar radiation was integrated with supplemental LED interlighting emitting 80 µmol m -2 s -1 at 30 cm. Contrarily, when tomato plants were treated with a supplemental LED interlighting system (with lamps emitting 165 µmol m -2 s -1 at 10 cm for 12 h d −1 ), a greater stem diameter and a shorter internode In the present research, internode length and stem diameter were measured both in spring and summer season (Figure 4).…”

Section: Plant Vegetative Growth In Response To Supplementary Lightingmentioning

confidence: 99%

Supplementary LED Interlighting Improves Yield and Precocity of Greenhouse Tomatoes in the Mediterranean

et al. 2020

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In Northern Europe, the use of light–emitting diodes (LEDs) is widely adopted in protected horticulture, enabling to enhance plant growth by ensuring needed radiative fluxes throughout seasons. Contrarily, the use of artificial lighting in Mediterranean greenhouse still finds limited applications. In this study, the effects of supplemental LED interlighting on vegetative development, fruit growth, yield, and fruit quality of high-wire tomato plants (Solanum lycopersicum L. cv. ‘Siranzo’) during spring and summer season were addressed in a hydroponic greenhouse in Italy. Plants were either grown under natural solar radiation (control), or by adding supplemental LED interlighting. LED treatment featured red (R) and blue (B) light (RB ratio of 3) and a photosynthetic photon flux density of 170 µmol m−2 s−1 for 16 h d−1. Supplemental LED interlighting enhanced yield as a result of increased fruit weight and dimension. While no effects on soluble solids content and fruit color at harvesting were observed, supplemental LED interlighting accelerated ripening by one week in spring and two weeks in summer and this also resulted in increased cumulated productivity (+16%) as compared to control treatment. Overall, supplemental LED interlighting can represent a feasible technology for tomato greenhouse production also in the Mediterranean region.

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“…The results showed that the highest studied green percentage (39%), which was similar to the sunlight spectrum, showed the best effects on plant biomass and yield, suggesting that plants may use sunlight-combined wavelengths more efficiently for growth than other wavelength combinations (Kaiser et al, 2019b ). The far-red wavelength was also investigated by several studies on greenhouse tomato supplemental LED lighting (Pepin et al, 2014 ; Hao et al, 2015 , 2016 ; Gómez and Mitchell, 2016b ; Song et al, 2016 ; Dzakovich et al, 2017 ; Fanwoua et al, 2019 ; Ji et al, 2019 ; Kalaitzoglou et al, 2019 ; Kim et al, 2019 , 2020 ; Zhang et al, 2019 ). The far-red ratio, particularly the red:far-red ratio, influences phytochrome regulation and has effects on plant architectural development, flower induction, germination, photosynthetic capacity, and nutrition (Demotes-Mainard et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Supplemental LED Lighting Effectively Enhances the Yield and Quality of Greenhouse Truss Tomato Production: Results of a Meta-Analysis

et al. 2021

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Intensive growing systems used for greenhouse tomato production, together with light interception by cladding materials or other devices, may induce intracanopy mutual shading and create suboptimal environmental conditions for plant growth. There are a large number of published peer-reviewed studies assessing the effects of supplemental light-emitting diode (LED) lighting on improving light distribution in plant canopies, increasing crop yields and producing qualitative traits. However, the research results are often contradictory, as the lighting parameters (e.g., photoperiod, intensity, and quality) and environmental conditions vary among conducted experiments. This research presents a global overview of supplemental LED lighting applications for greenhouse tomato production deepened by a meta-analysis aimed at answering the following research question: does supplemental LED lighting enhance the yield and qualitative traits of greenhouse truss tomato production? The meta-analysis was based on the differences among independent groups by comparing a control value (featuring either background solar light or solar + HPS light) with a treatment value (solar + supplemental LED light or solar + HPS + supplemental LED light, respectively) and included 31 published papers and 100 total observations. The meta-analysis results revealed the statistically significant positive effects (p-value < 0.001) of supplemental LED lighting on enhancing the yield (+40%), soluble solid (+6%) and ascorbic acid (+11%) contents, leaf chlorophyll content (+31%), photosynthetic capacity (+50%), and leaf area (+9%) compared to the control conditions. In contrast, supplemental LED lighting did not show a statistically significant effect on the leaf stomatal conductance (p-value = 0.171). In conclusion, in addition to some partial inconsistencies among the considered studies, the present research enables us to assert that supplemental LED lighting ameliorates the quantitative and qualitative aspects of greenhouse tomato production.

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Beneficial Effects of Using a 3-D Led Interlighting System for Organic Greenhouse Tomato Grown in Canada Under Low Natural Light Conditions

Cited by 15 publications

References 0 publications

Supplemental LED Increases Tomato Yield in Mediterranean Semi-Closed Greenhouse

Supplemental LED Increases Tomato Yield in Mediterranean Semi-Closed Greenhouse

Supplementary LED Interlighting Improves Yield and Precocity of Greenhouse Tomatoes in the Mediterranean

Supplemental LED Lighting Effectively Enhances the Yield and Quality of Greenhouse Truss Tomato Production: Results of a Meta-Analysis

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