Abstract
Along with the high energy-efficiency potential, light-emitting diode (LED) lighting provides the possibility for spectrum control. Our study presents the original data on the influence of LED light spectrum quality on the growth and macro- and micro-nutrient uptake of lettuce ( Lactuca sativa L. cv. Frillice) plants cultivated in indoor conditions and without daylight. Four LED light spectral combinations were investigated using conventional high-pressure sodium (HPS) lighting as a control. In general, the LED light spectra were more favourable than the HPS light spectrum for promoting the growth and nutrient uptake of plants. In particular, the light spectrum provided by the combination of the far-red, deep-red and blue LEDs had the highest growth and nutrient uptake indices. This spectral combination particularly enhanced the uptake of potassium, calcium and magnesium in comparison to control plants grown under conventional HPS lamps. The uptake of iron and zinc were significantly influenced by the spectral changes of the red and blue light.
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Claims 4
Claim · model-written summary
LED spectra generally promoted lettuce growth and nutrient uptake more than HPS lighting.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- LED light spectrae0
- Outcome
- growth and nutrient uptakee0
- Direction
- more favourablee0
- Comparator
- HPS light spectrume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the LED light spectra were more favourable than the HPS light spectrum for promoting the growth and nutrient uptake of plants.”
t0“The influence of the LED light spectrum on the growth and nutrient uptake of hydroponically grown lettuce”
Claim · model-written summary
The far-red, deep-red and blue LED combination had the highest growth and nutrient uptake indices.
- Taxon
- lettuceLactuca sativat0
- Treatment
- combination of the far-red, deep-red and blue LEDse0
- Outcome
- growth and nutrient uptake indicese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the light spectrum provided by the combination of the far-red, deep-red and blue LEDs had the highest growth and nutrient uptake indices.”
t0“The influence of the LED light spectrum on the growth and nutrient uptake of hydroponically grown lettuce”
Claim · model-written summary
The far-red, deep-red and blue combination enhanced potassium, calcium and magnesium uptake relative to HPS.
- Taxon
- lettuceLactuca sativat0
- Treatment
- This spectral combinatione0
- Outcome
- uptake of potassium, calcium and magnesiume0
- Direction
- enhancede0
- Comparator
- control plants grown under conventional HPS lampse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This spectral combination particularly enhanced the uptake of potassium, calcium and magnesium in comparison to control plants grown under conventional HPS lamps.”
t0“The influence of the LED light spectrum on the growth and nutrient uptake of hydroponically grown lettuce”
Claim · model-written summary
Changes in red and blue light significantly influenced iron and zinc uptake.
- Taxon
- lettuceLactuca sativat0
- Treatment
- spectral changes of the red and blue lighte0
- Outcome
- uptake of iron and zince0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The uptake of iron and zinc were significantly influenced by the spectral changes of the red and blue light.”
t0“The influence of the LED light spectrum on the growth and nutrient uptake of hydroponically grown lettuce”
The same questions in other papers
light · growth · Lactuca sativa (garden lettuce)Positive and negative results
242 papers in the same direction as this paper · 54 in the opposite direction · 3 reporting no difference from an alternative
- negative
- positive
- positive
296 papers more in this group
See all 300 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.