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dc.contributor.authorVerheul, Michel
dc.contributor.authorMaessen, Hendricus
dc.contributor.authorPaponov, Martina
dc.contributor.authorPanosyan, Anush
dc.contributor.authorKechasov, Dmitry
dc.contributor.authorNaseer, Muhammad
dc.contributor.authorPaponov, Ivan
dc.date.accessioned2022-01-26T09:56:00Z
dc.date.available2022-01-26T09:56:00Z
dc.date.created2022-01-20T15:35:27Z
dc.date.issued2022-09-17
dc.identifier.citationScientia Horticulturae. 2021, 291 .en_US
dc.identifier.issn0304-4238
dc.identifier.urihttps://hdl.handle.net/11250/2839393
dc.description.abstractStudies of whole-plant responses of tomato to light environments are limited and cannot be extrapolated from observations of seedlings or short-term crops in growth chambers. Effects of artificial light sources like high pressure sodium (HPS) and light emitting diodes (LED) are mainly studied as supplement to sunlight in greenhouses. Since natural sunlight is almost neglectable in Norway during wintertime, we could study effects of different types of artificial light on crop growth and production in tomato. The goal of this experiment was to quantify the effects of artificial HPS top-light, installed at the top of the canopy, and LED inter-light, installed between plant rows, on fresh and dry matter production and fruit quality of greenhouse tomatoes under controlled and documented conditions. Our aim was to optimize yield under different light conditions, while avoiding an unfavourable source-sink balance. Tomato plants were grown under HPS top light with an installed capacity of 161, 242 and 272 W m−2 combined with LED inter-light with an installed capacity of 0, 60 or 120 W m−2. We used stem diameter as a trait to regulate air temperature in different light treatments in order to retain plant vigour. Results show that both HPS top light and LED inter-light increased tomato yield. However, the positive effect of supplemental LED inter-light decreased at higher amounts of HPS top light. Under the conditions in this experiment, with neglectable incoming solar radiation, an installed amount of 242 Watt m-2 HPS top light and a daily light integral (DLI) of 30 mol m-2 day-1 resulted in best light use efficiency (in gram fresh tomato per mol). Addition of LED inter-light to HPS top light reduced light use efficiency. Results show that winter production using artificial light in Norway is more energy efficient compared to production under sunlight in southern countries. Results can be used for modelling purposes.en_US
dc.language.isoengen_US
dc.publisherElsevier B.V.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleArtificial top-light is more efficient for tomato production than inter-lighten_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.rights.holder© 2021 Published by Elsevier B.V.en_US
dc.source.pagenumber11en_US
dc.source.volume291en_US
dc.source.journalScientia Horticulturaeen_US
dc.identifier.doi10.1016/j.scienta.2021.110537
dc.identifier.cristin1986506
dc.relation.projectNorges forskningsråd: 255613en_US
dc.source.articlenumber110537en_US
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal