Optimizing spectral quality with quantum dots to enhance crop yield in controlled environments

Parrish, Charles H.; Hebert, Damon; Jackson, A. Jonathan; Ramasamy, Karthik; McDaniel, Hunter; Giacomelli, G. A.; Bergren, Matthew R.

doi:10.1038/s42003-020-01646-1

Cited by 57 publications

(64 citation statements)

References 40 publications

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“…Before making assumptions about the reasons for the positive effect of the PCF, it should be noted that the passing of light through glass coated with luminescent nanopar-ticles was not accompanied by a noticeable increase in the intensity of the visible range. However, in the present work, as well as in a number of other works, an increase in plant productivity was demonstrated [25][26][27][28][29][30][31][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. Nanosized particles can act as a protectant against UV owing to their capability to absorb and scatter ultraviolet radiation.…”

Section: Discussionmentioning

confidence: 68%

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

et al. 2021

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The effect of upconverting luminescent nanoparticles coated on glass on the productivity of Solanum lycopersicum was studied. The cultivation of tomatoes under photoconversion glass led to an increase in plant productivity and an acceleration of plant adaptation to ultraviolet radiation. An increase in the total leaf area and chlorophyll content in the leaves was revealed in plants growing under the photoconversion glass. Plants growing under the photoconversion glass were able to more effectively utilize the absorbed light energy. The results of this study suggest that the spectral changes induced by photoconversion glass can accelerate the adaptation of plants to the appearance of ultraviolet radiation.

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Section: Discussionmentioning

confidence: 68%

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

et al. 2021

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“…Moreover, Gerovac et al [30] found greater fresh weight in mustard microgreens grown under red/green/blue (74/18/8%) compared to red/blue (87/13%) and red/blue/far-red (84/9/7%), while they did not find significant differences in the fresh weight of kohlrabi and mizuna microgreens. Light-absorbing film with peak emission at 600 or 660 nm induced 11% greater edible fresh mass in lettuce compared to no film [31]. In another study, the treatment of tomato transplants with supplementary light at 595 nm led to a decreased leaf area, and shoot and root dry weight compared to basal light [32].…”

Section: Morphologymentioning

confidence: 99%

Light Spectrum Differentially Affects the Yield and Phytochemical Content of Microgreen Vegetables in a Plant Factory

Bantis

2021

Plants

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Light quality exerts considerable effects on crop development and phytochemical content. Moreover, crops grown as microgreens are ideal for plant factories with artificial lighting, since they contain greater amounts of bioactive compounds compared to fully-grown plants. The aim of the present study was to evaluate the effect of broad-spectra light with different red/blue ratios on the yield, morphology, and phytochemical content of seven microgreens. Mustard, radish, green basil, red amaranth, garlic chives, borage, and pea shoots were grown in a vertical farming system under three light sources emitting red/blue ratios of about 2, 5, and 9 units (RB2, RB5, and RB9, respectively). Mustard exhibited the most profound color responses. The yield was enhanced in three microgreens under RB9 and in garlic under RB2. Both the hypocotyl length and the leaf and cotyledon area were significantly enhanced by increasing the red light in three microgreens each. Total soluble solids (Brix) were reduced in 4 microgreens under RB2. The total phenolic content and antioxidant capacity were reduced under RB2 in 6 and 5 microgreens, respectively. The chlorophylls were variably affected but total the carotenoid content was reduced in RB9 in three microgreens. Overall, light wavelength differentially affected the microgreens’ quality, while small interplays in spectral bands enhanced their phytochemical content.

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“…This setup has 66 kW of identical enhanced bifacial red PV modules. In addition to the transmission percentage (Figure 1) for these crystalline silicon-based PV, the enhancements of red greenhouse modules have many other variables to optimize for, including testing the density, size and chemical makeup of nanoparticles responsible for the spectral shifting via fluorescence [131][132][133]. The interplay between the PV and these nanoparticles need to be investigated for each new crop.…”

Section: Case Study Of Red Agrivoltaic Module Experimental Design With a Poscasmentioning

confidence: 99%

Parametric Open Source Cold-Frame Agrivoltaic Systems

Pearce

2021

Inventions

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There is an intense need to optimize agrivoltaic systems. This article describes the invention of a new testing system: the parametric open source cold-frame agrivoltaic system (POSCAS). POSCAS is an adapted gardening cold-frame used in cold climates as it acts as a small greenhouse for agricultural production. POSCAS is designed to test partially transparent solar photovoltaic (PV) modules targeting the agrivoltaic market. It can both function as a traditional cold frame, but it can also be automated to function as a full-service greenhouse. The integrated PV module roof can be used to power the controls or it can be attached to a microinverter to produce power. POSCAS can be placed in an experimental array for testing agricultural and power production. It can be easily adapted for any type of partially transparent PV module. An array of POSCAS systems allows for the testing of agrivoltaic impacts from the percent transparency of the modules by varying the thickness of a thin film PV material or the density of silicon-based cells, and various forms of optical enhancement, anti-reflection coatings and solar light spectral shifting materials in the back sheet. All agrivoltaic variables can be customized to identify ideal PV designs for a given agricultural crop.

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Optimizing spectral quality with quantum dots to enhance crop yield in controlled environments

Cited by 57 publications

References 40 publications

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

Cultivation of Solanum lycopersicum under Glass Coated with Nanosized Upconversion Luminophore

Light Spectrum Differentially Affects the Yield and Phytochemical Content of Microgreen Vegetables in a Plant Factory

Parametric Open Source Cold-Frame Agrivoltaic Systems

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