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Evaluation of Different Lighting Str...

Elkins, Claudia Ann.

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Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture./
作者:	Elkins, Claudia Ann.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	88 p.
附註:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
標題:	Horticulture. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27830900
ISBN:	9798645490829

Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture.
Elkins, Claudia Ann.

Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 88 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.S.)--University of Georgia, 2020.

This item must not be sold to any third party vendors.

Crop growth in controlled environments can be improved with targeted strategies to deliver supplemental light. Three studies evaluated elements that can affect photosynthesis and growth. Study one used chlorophyll fluorescence to quantify the daily photochemical integral (DPI, electron transport rate integrated over 24 hours). Daily photochemical integral increased when the same daily light integral (DLI) was provided over longer photoperiods at a lower photosynthetic photon flux density (PPFD) for Lactuca sativa grown in a growth chamber. Study two applied these findings to greenhouse production using an adaptive lighting control system. Supplemental light-emitting diode (LED) arrays were provided to achieve a similar target DLI across set photoperiods. Supplemental light increased growth of Rudbeckia fulgida seedlings more efficiently at longer photoperiods and lower PPFD. Study three evaluated supplementation with far-red light on growth of Digitalis purpurea seedlings in a growth chamber. Plant dry weight increased with increasing far-red without detrimental morphological effects.

ISBN: 9798645490829Subjects--Topical Terms:

555447
Horticulture.
Subjects--Index Terms:

Daily photochemical integral

Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture.
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500 $a Advisor: van Iersel, Marc W.
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506 $a This item must not be added to any third party search indexes.
520 $a Crop growth in controlled environments can be improved with targeted strategies to deliver supplemental light. Three studies evaluated elements that can affect photosynthesis and growth. Study one used chlorophyll fluorescence to quantify the daily photochemical integral (DPI, electron transport rate integrated over 24 hours). Daily photochemical integral increased when the same daily light integral (DLI) was provided over longer photoperiods at a lower photosynthetic photon flux density (PPFD) for Lactuca sativa grown in a growth chamber. Study two applied these findings to greenhouse production using an adaptive lighting control system. Supplemental light-emitting diode (LED) arrays were provided to achieve a similar target DLI across set photoperiods. Supplemental light increased growth of Rudbeckia fulgida seedlings more efficiently at longer photoperiods and lower PPFD. Study three evaluated supplementation with far-red light on growth of Digitalis purpurea seedlings in a growth chamber. Plant dry weight increased with increasing far-red without detrimental morphological effects.
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650 4 $a Plant sciences. $3 3173832
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653 $a Far-red
653 $a Light-emitting diodes
653 $a Photochemistry
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653 $a Quantum yield of photosystem II
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