Claim · model-written summary
Plant dry weight increased as the photoperiod for supplemental lighting was lengthened, with supplemental light at lower average PPFDs.
- Taxon
- Lactuca sativa
Lactuca sativat0 - Treatment
- photoperiod for supplemental lightinge1
- Outcome
- plant dry weighte1
- Direction
- increasede1
- Setting
- greenhouse experimentse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Lactuca sativa”
e0“We conducted two greenhouse experiments”
e1“As the photoperiod for supplemental lighting was increased and supplemental light was provided at lower average PPFD s, plant dry weight increased”
Title
Geoffrey Weaver; Marc W. van Iersel HortScience 2020. doi:10.21273/hortsci14721-19
Other claims from this paper (3)
- Intervention effect Conversion efficiency increased as the supplemental-lighting photoperiod was extended from 12 to 21 hours.
- Intervention effect Leaf size and chlorophyll content index increased with longer photoperiods.
- Intervention effect The number of plants with tipburn symptoms increased as the photoperiod was extended.