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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.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture./
Author:	Elkins, Claudia Ann.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	88 p.
Notes:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
Subject:	Horticulture. -
Online resource:	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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245 1 0 $a Evaluation of Different Lighting Strategies Used to Improve Efficiencies in Plant Growth for Controlled Environment Agriculture.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 88 p.
500 $a Source: Masters Abstracts International, Volume: 81-12.
500 $a Advisor: van Iersel, Marc W.
502 $a Thesis (M.S.)--University of Georgia, 2020.
506 $a This item must not be sold to any third party vendors.
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.
590 $a School code: 0077.
650 4 $a Horticulture. $3 555447
650 4 $a Plant sciences. $3 3173832
653 $a Daily photochemical integral
653 $a Far-red
653 $a Light-emitting diodes
653 $a Photochemistry
653 $a Photoperiod
653 $a Quantum yield of photosystem II
690 $a 0471
690 $a 0479
710 2 $a University of Georgia. $b Horticulture - MS. $3 3559782
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