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Photon Distribution of Sole-Source Lighting Affects the Mineral Nutrient Content of Microgreens

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  • Viktorija Vaštakaitė-Kairienė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Aušra Brazaitytė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Jurga Miliauskienė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Rūta Sutulienė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Kristina Laužikė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Akvilė Viršilė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Giedrė Samuolienė

    (Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, LT-54333 Babtai, Lithuania)

  • Erik S. Runkle

    (Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA)

Abstract

In the study, we cultivated basil, beet, and mustard microgreens under different lighting treatments from light-emitting diodes (LEDs) and evaluated the contents of mineral nutrients. Microgreens grew under blue 447, red 638 and 665, far-red 731 nm LEDs, or the same spectrum but with partial substitution of 638 nm red with green 520 (BRG), yellow 595 (BRY), or orange 622 nm (BRO) LEDs (16 h photoperiod; total photon flux density of 300 μmol m −2 s −1 ). BRG, BRY, or BRO lighting had distinct effects on mineral contents among the microgreen species. BRG increased the content of mineral nutrients, especially in mustard and beet. In all microgreens, Ca and P were associated with BRG; in beet and mustard, Zn and Mg were associated with BRG; in basil, Zn was associated with BRY and Mg with BRO treatments. A broader photon spectrum increased Fe (up to 2.9–fold), K:Ca, P:Mg, and P:Zn in basil, and Fe:Zn in microgreens. We conclude that the partial replacement of red with green light was the most effective at enhancing the mineral nutrient content of microgreens, although responses varied among the crops studied.

Suggested Citation

  • Viktorija Vaštakaitė-Kairienė & Aušra Brazaitytė & Jurga Miliauskienė & Rūta Sutulienė & Kristina Laužikė & Akvilė Viršilė & Giedrė Samuolienė & Erik S. Runkle, 2022. "Photon Distribution of Sole-Source Lighting Affects the Mineral Nutrient Content of Microgreens," Agriculture, MDPI, vol. 12(8), pages 1-14, July.
  • Handle: RePEc:gam:jagris:v:12:y:2022:i:8:p:1086-:d:869862
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    References listed on IDEAS

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    2. Miller, By Dennis D. & Welch, Ross M., 2013. "Food system strategies for preventing micronutrient malnutrition," Food Policy, Elsevier, vol. 42(C), pages 115-128.
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