Responses of two Anthurium cultivars to high daily integrals of diffuse light

Li, T.; Heuvelink, E.; Noort, Filip van; Kromdijk, Johannes; Marcelis, L.F.M.

doi:10.1016/j.scienta.2014.09.039

Cited by 32 publications

(37 citation statements)

References 35 publications

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“…This is inconsistent with previous findings, which have demonstrated that diffuse light increased biomass production in tomato (Duek et al, 2012), pepper (Chun et al, 2005), chrysanthemum (Markvart et al, 2010) and Anthurium (Li et al, 2014b) plants. The increase in biomass is attributed to the more efficient use of diffuse light than of direct light by these other crops (Gu et al, 2002;Li et al, 2014a).…”

Section: Discussioncontrasting

confidence: 99%

“…The photosynthetic apparatus of lettuce plants became acclimated to the diffuse light, thus reducing carotenoids and Chl (a+b) contents mainly as a result of a decrease in Chl a during spring, summer and autumn. There are some conflicting reports on the effects of diffuse light on Chl contents: Anthurium plants grown under light-diffusing glass were less green (measured as CIELAB values, p = 0.07) than those grown under clear glass (Li et al, 2014b), whereas lettuces grown under diffusive roof-mounted solar photovoltaic panels showed similar SPAD values to those grown under nondiffusive panels during winter, spring and autumn, and higher values in summer harvests (Tani et al, 2014). The Chl content and Chl a/b ratio increased in tomato plants grown under diffuse light (Li et al, 2014a).…”

Section: Discussionmentioning

confidence: 99%

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Effects of light-diffusing plastic film on lettuce production and quality attributes

Riga

Benedicto

2017

Span. j. agric. res.

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In general, plants grown under diffuse light yield higher biomass than those grown under direct light as a result of a more uniform distribution of the light across the plant canopy. We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods. Lettuce grown under the light-diffusing film were smaller (up to 36%) than control plants grown under the clear film, due to the fewer leaves per plant (up to 22%) and lower mean values of individual leaf area (up to 29%). The photosynthetically active radiations use efficiency was sometimes lower (up to 23%) in lettuces grown under the light-diffusing film. The pigment contents tended to be lower in plants grown under the light-diffusing plastic. The total macroelement contents of the lettuces grown under the light-diffusing plastic were up to 10% higher than in the lettuces grown under clear plastic, mainly as a result of higher leaf K contents (up to 19% higher). In addition, use of the light-diffusing plastic tended to increase leaf nitrate contents (by up to 23%). The leaf solid soluble content and acidity values were higher in the lettuces grown under the light-diffusing plastic, while leaf pH values were lower than in the control plants. The findings showed that the light-diffusing plastic was detrimental to production of compact heads of lettuce, and to some quality parameters such as nitrate and pigment contents. Nevertheless, open-leaf cultivars would likely show a different response to the diffuse light Additional key words: diffuse light; Lactuca sativa; light use efficiency; vegetable production.Correspondence should be addressed to Patrick Riga: priga@neiker.eusAbbreviations used: Car (carotenoids); CC (construction cost); dw (dry weight); fw (fresh weight); LUE (light use efficiency); NR (nitrate reductase); PAR (photosynthetically active radiations); PV (photovoltaic solar panel); RH (relative humidity); SLA (specific leaf area); SSC (soluble solids content).

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of light-diffusing plastic film on lettuce production and quality attributes

Riga

Benedicto

2017

Span. j. agric. res.

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“…This mainly resulted from the shadow cast from the greenhouse back roof and wall which functions for heat storage during the day and heat release during the night (Li et al, 2017). It is clearly recognized that heterogeneous light distribution strongly limits light use efficiency (Li et al, 2014b). In this study, the emission angle of the HPS lamps in the north section was adjusted to face the south section (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Conventionally, high-pressure sodium (HPS) lamps are used in commercial greenhouses as a supplemental lighting source above the crop canopy. Plants are known to benefit from even light distribution over the crop canopy (Li et al, 2014b(Li et al, , 2016Trouwborst et al, 2011b). In the high-wire cultivation system with high plant density, most of the supplemental lighting can only be intercepted by the upper part of the plant canopy (Trouwborst et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a hybrid system which combines the advantages of HPS and LEDs could have great potential in greenhouse crops. Plant acclimation depends to a large extent on the prevailing light conditions (Li et al, 2014b). Under supplemental lighting conditions, apart from increased biomass production, the higher light intensity often leads to an acclimation of the leaf morphology which characterized by thicker leaves as indicated by a lower specific leaf area (SLA) (Poorter et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Supplementary Artificial Light on Growth of the Tomato (<i>Solanum lycopersicum</i>) in a Chinese Solar Greenhouse

Yan

Zhang

et al. 2018

The Hortic J

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Light is one of the most limiting factors affecting plant growth in greenhouses. Recently, supplementary artificial light has been widely used in greenhouse production in winter or on overcast days when solar radiation is weak. However, plant responses to supplementary artificial light in a Chinese Solar Greenhouse (CSG) and the economic feasibility of the lighting strategy are poorly understood. The tomato, one of the most widely produced and consumed vegetables in the world, was tested in this study. A CSG was divided into three sections, and three treatments were arranged. They were top lighting with HPS lamps (TL), TL plus interlighting with LEDs (TL+IL), and control treatment without artificial light, respectively. We showed that supplementary artificial light improved the uniformity of light distribution from the south to north end of the CSG, and increased the average greenhouse temperature by ~1-1.4°C. Tomato yield was increased by 21.8% and 32.9% in TL and TL+IL, respectively, compared with that of the control. The higher yield under supplementary artificial light resulted from a larger number of ripe fruits rather than bigger fruit size. Moreover, fruit quality was improved by supplementary artificial light as indicated by a higher total soluble sugar content. There were no significant differences in total biomass production or total soluble sugar content in leaves, as well as fruits, between TL and TL+IL treatments, but TL+IL further stimulated fruit maturation compared with TL. Although supplementary artificial light confers an advantage in terms of tomato growth, it is not economically feasible as 28.8 kWh electricity was required to increase the tomato yield by 1 kg in the CSG. Therefore, it is important to find solutions to increase the efficiency of supplementary artificial light in the CSG.

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Advanced Optical Materials for Sunlight Control in Greenhouses

Timmermans

Hemming

Baeza

et al. 2020

Advanced Optical Materials

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The increasing demand for efficiently growing vegetation in greenhouses requires continual improvement of the control of the growth environment experienced by the plants. The single most important factor in maximizing the crop’s growth is the quantity, quality, and geometrical distribution of radiation intercepted at every moment. Few available greenhouse coverings are capable of responding to changes in sunlight conditions by themselves, limiting the grower’s control: they must use additional technologies, including screens, artificial lighting, heating, and cooling. This review considers existing efforts in providing adaptable greenhouse covering systems and advanced optical materials for controlling the color, intensity, and/or distribution of sunlight transmitted into greenhouse‐like structures by describing existing static materials and their responsive equivalents. This work also offers speculation on potential applications of other light‐control elements, mostly designed for use in the urban environment that can be adapted for greenhouse use in the future.

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Responses of two Anthurium cultivars to high daily integrals of diffuse light

Cited by 32 publications

References 35 publications

Effects of light-diffusing plastic film on lettuce production and quality attributes

Effects of light-diffusing plastic film on lettuce production and quality attributes

Effects of Supplementary Artificial Light on Growth of the Tomato (<i>Solanum lycopersicum</i>) in a Chinese Solar Greenhouse

Advanced Optical Materials for Sunlight Control in Greenhouses

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