Abstract
In the present study, we analyzed the effect of using a hydroponic system inside a greenhouse and different photoperiod regimes with artificial light on the nutrient uptake of bok choy. Light duration treatment consisting of both sunlight and artificial light was applied to determine the optimal photoperiod for bok choy. Advanced technology—a wireless sensor network and Internet of Things—was used to monitor and maintain nutrient concentrations. Additionally, plant growth was evaluated using image processing technology. A higher amount of P was observed to be accumulated in plants grown in plots without photoperiod. Meanwhile, excessive photoperiod was found to reduce K content in plants. The optimal photoperiod in this study was 20:4 (light:dark), which is a combination of 12 h of sunlight and 8 h of artificial light. Additionally, image processing technology helped monitor plant growth. Pixel information in images can represent plant growth with a R2 value of >0.8. Further, the addition of photoperiod affects the dry weight of yields and growth rate, which is highly correlated to nutrient uptake, with R2 values of 0.84 and 0.72, respectively. The combination of artificial light and sunlight along with the optimal photoperiod can optimize the growth of bok choy with appropriate NPK uptake.
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Claims 7
Claim · model-written summary
Plants without photoperiod accumulated more P.
- Taxon
- bok choy
.jpg?width=60)
Brassica rapa subsp. chinensist0 - Treatment
- without photoperiode0
- Outcome
- Pe0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“A higher amount of P was observed to be accumulated in plants grown in plots without photoperiod”
t0“bok choy”
Claim · model-written summary
Excessive photoperiod reduced plant K content.
- Taxon
- bok choyBrassica rapa subsp. chinensist0
- Treatment
- excessive photoperiode0
- Outcome
- K contente0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive photoperiod was found to reduce K content in plants”
t0“bok choy”
Claim · model-written summary
The optimal photoperiod was 20:4 light to dark, combining 12 hours sunlight and 8 hours artificial light.
- Taxon
- bok choyBrassica rapa subsp. chinensist0
- Outcome
- optimal photoperiode0
- Value
- 20:4 (light:dark)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The optimal photoperiod in this study was 20:4 (light:dark), which is a combination of 12 h of sunlight and 8 h of artificial light”
t0“bok choy”
Claim · model-written summary
Image pixel information represented plant growth with R2 above 0.8.
- Taxon
- bok choyBrassica rapa subsp. chinensist0
- Outcome
- plant growthe0
- Value
- >0.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pixel information in images can represent plant growth with a R2 value of >0.8”
t0“bok choy”
Claim · model-written summary
Dry weight of yields under photoperiod addition correlated with nutrient uptake at R2 0.84.
- Taxon
- bok choyBrassica rapa subsp. chinensist0
- Treatment
- addition of photoperiode0
- Outcome
- dry weight of yieldse0
- Value
- 0.84e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of photoperiod affects the dry weight of yields and growth rate, which is highly correlated to nutrient uptake, with R2 values of 0.84 and 0.72, respectively”
t0“bok choy”
Claim · model-written summary
Growth rate under photoperiod addition correlated with nutrient uptake at R2 0.72.
- Taxon
- bok choyBrassica rapa subsp. chinensist0
- Treatment
- addition of photoperiode0
- Outcome
- growth ratee0
- Value
- 0.72e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the addition of photoperiod affects the dry weight of yields and growth rate, which is highly correlated to nutrient uptake, with R2 values of 0.84 and 0.72, respectively”
t0“bok choy”
Claim · model-written summary
Artificial and sunlight at the optimal photoperiod can optimize growth with appropriate NPK uptake.
- Taxon
- bok choyBrassica rapa subsp. chinensise0
- Outcome
- optimize the growth of bok choy with appropriate NPK uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combination of artificial light and sunlight along with the optimal photoperiod can optimize the growth of bok choy with appropriate NPK uptake”
The same questions in other papers
light · nutrient: content · Brassica rapa (field mustard)Positive and negative results
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See all 8 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.