Abstract
Light pollution due to outdoor lighting results in a delayed heading time and reduced yield in rice. We investigated the effect of light pollution by a method whereby rice grows in a paddy field exposed to three sources of outdoor illuminations: commercial LED illumination, a special LED illumination, and a mercury lamp. We examined effects of heading time and yield in rice when Oryza sativa L. cv. Hinohikari was irradiated by each kind of illumination at night. In the results, for irradiation by a common LED illumination and a mercury lamp, heading time was delayed and yield was reduced with increased illuminance, indicating the occurrence of light pollution. However, for irradiation by a special LED illumination, delayed heading time was unlikely to occur and the reduction in yield was small, indicating less light pollution.
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Claims 4
Claim · model-written summary
Night-time irradiation with common LED or mercury lamp illumination delayed heading time of rice with increased illuminance.
- Taxon
- rice
Oryza sativae0 - Material
- Oryza sativa L. cv. Hinohikarie1
- Treatment
- irradiation by a common LED illumination and a mercury lampe2
- Outcome
- heading timee2
- Direction
- delayede2
- Qualifier
- with increased illuminancee2
- Setting
- paddy fielde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light pollution due to outdoor lighting results in a delayed heading time and reduced yield in rice”
e1“We examined effects of heading time and yield in rice when Oryza sativa L. cv. Hinohikari was irradiated by each kind of illumination at night”
e2“In the results, for irradiation by a common LED illumination and a mercury lamp, heading time was delayed and yield was reduced with increased illuminance, indicating the occurrence of light pollution”
e3“a method whereby rice grows in a paddy field exposed to three sources of outdoor illuminations: commercial LED illumination, a special LED illumination, and a mercury lamp”
Claim · model-written summary
Night-time irradiation with common LED or mercury lamp illumination reduced rice yield with increased illuminance.
- Taxon
- riceOryza sativae0
- Material
- Oryza sativa L. cv. Hinohikarie1
- Treatment
- irradiation by a common LED illumination and a mercury lampe2
- Outcome
- yielde2
- Direction
- reducede2
- Qualifier
- with increased illuminancee2
- Setting
- paddy fielde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light pollution due to outdoor lighting results in a delayed heading time and reduced yield in rice”
e1“We examined effects of heading time and yield in rice when Oryza sativa L. cv. Hinohikari was irradiated by each kind of illumination at night”
e2“In the results, for irradiation by a common LED illumination and a mercury lamp, heading time was delayed and yield was reduced with increased illuminance, indicating the occurrence of light pollution”
e3“a method whereby rice grows in a paddy field exposed to three sources of outdoor illuminations: commercial LED illumination, a special LED illumination, and a mercury lamp”
Claim · model-written summary
With a special LED illumination at night, delayed heading time of rice was unlikely to occur.
- Taxon
- riceOryza sativae0
- Material
- Oryza sativa L. cv. Hinohikarie1
- Treatment
- irradiation by a special LED illuminatione4
- Outcome
- delayed heading timee4
- Qualifier
- was unlikely to occure4
- Setting
- paddy fielde3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light pollution due to outdoor lighting results in a delayed heading time and reduced yield in rice”
e1“We examined effects of heading time and yield in rice when Oryza sativa L. cv. Hinohikari was irradiated by each kind of illumination at night”
e3“a method whereby rice grows in a paddy field exposed to three sources of outdoor illuminations: commercial LED illumination, a special LED illumination, and a mercury lamp”
e4“However, for irradiation by a special LED illumination, delayed heading time was unlikely to occur and the reduction in yield was small, indicating less light pollution”
Claim · model-written summary
With a special LED illumination at night, the reduction in rice yield was small.
- Taxon
- riceOryza sativae0
- Treatment
- irradiation by a special LED illuminatione4
- Outcome
- reduction in yielde4
- Direction
- smalle4
- Setting
- paddy fielde3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light pollution due to outdoor lighting results in a delayed heading time and reduced yield in rice”
e3“a method whereby rice grows in a paddy field exposed to three sources of outdoor illuminations: commercial LED illumination, a special LED illumination, and a mercury lamp”
e4“However, for irradiation by a special LED illumination, delayed heading time was unlikely to occur and the reduction in yield was small, indicating less light pollution”
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See all 24 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.