Abstract
The canopy temperature of rice is a critical concern due to rising air temperatures and the increasing risk of heat damage. In this study, we investigated the canopy temperature difference (CTd) and canopy temperature depression (CTD) in the Japonica rice cultivars ‘Himenorin’ (HR) and ‘Nikomaru’ (NM). Additionally, we examined the effect of irrigating cooler water (ICWr) on canopy temperature, particularly its impact on CTD reduction, compared to a control plot. The results showed that CTd in HR was lower than in NM. Furthermore, CTD reached 2.23 °C in HR and 2.35 °C in NM under shallower ponding conditions. ICWr effectively reduced the canopy temperature in both cultivars and decreased CTD to a negative value. These findings highlight that ICWr can mitigate canopy temperature increases under more intense solar radiation and high air temperatures. Therefore, implementing ICWr in rice fields may serve as a potential countermeasure to reduce heat damage in rice by lowering canopy temperature. Further research is necessary to elucidate the underlying mechanisms and enhance strategies for mitigating heat exposure, ensuring rice resilience and sustainability in a changing climate.
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Claims 7
Claim · model-written summary
The canopy temperature difference was lower in Himenorin than Nikomaru.
- Taxon
- Japonica Rice
_by_Augustus_Binu.jpg?width=60)
Oryza sativa Japonica Groupt0 - Material
- HRe0
- Outcome
- CTde0
- Direction
- lowere0
- Comparator
- NMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_by_Augustus_Binu.jpg?width=500)
Verbatim
e0“The results showed that CTd in HR was lower than in NM.”
t0“Japonica Rice”
Claim · model-written summary
Canopy temperature depression under shallow ponding was 2.23 °C in Himenorin.
- Taxon
- Japonica RiceOryza sativa Japonica Groupt0
- Material
- HRe0
- Outcome
- CTDe0
- Value
- 2.23 °Ce0
- Qualifier
- shallower ponding conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, CTD reached 2.23 °C in HR and 2.35 °C in NM under shallower ponding conditions.”
t0“Japonica Rice”
Claim · model-written summary
Canopy temperature depression under shallow ponding was 2.35 °C in Nikomaru.
- Taxon
- Japonica RiceOryza sativa Japonica Groupt0
- Material
- NMe0
- Outcome
- CTDe0
- Value
- 2.35 °Ce0
- Qualifier
- shallower ponding conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Furthermore, CTD reached 2.23 °C in HR and 2.35 °C in NM under shallower ponding conditions.”
t0“Japonica Rice”
Claim · model-written summary
Cooler water irrigation reduced canopy temperature in both rice cultivars.
- Taxon
- Japonica RiceOryza sativa Japonica Groupt0
- Treatment
- ICWre0
- Outcome
- canopy temperaturee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ICWr effectively reduced the canopy temperature in both cultivars and decreased CTD to a negative value.”
t0“Japonica Rice”
Claim · model-written summary
Cooler water irrigation decreased canopy temperature depression to a negative value.
- Taxon
- Japonica RiceOryza sativa Japonica Groupt0
- Treatment
- ICWre0
- Outcome
- CTDe0
- Direction
- decreasede0
- Qualifier
- negative valuee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ICWr effectively reduced the canopy temperature in both cultivars and decreased CTD to a negative value.”
t0“Japonica Rice”
Claim · model-written summary
Cooler irrigation water may mitigate canopy warming under stronger solar radiation and high air temperature.
- Taxon
- Japonica RiceOryza sativa Japonica Groupt0
- Treatment
- ICWre0
- Outcome
- canopy temperature increasese0
- Direction
- mitigatee0
- Qualifier
- under more intense solar radiation and high air temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These findings highlight that ICWr can mitigate canopy temperature increases under more intense solar radiation and high air temperatures.”
t0“Japonica Rice”
Claim · model-written summary
The authors propose cooler water irrigation as a potential rice field countermeasure against heat damage.
- Taxon
- rice
Oryza sativae0 - Treatment
- implementing ICWr in rice fieldse0
- Outcome
- reduce heat damagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Therefore, implementing ICWr in rice fields may serve as a potential countermeasure to reduce heat damage in rice by lowering canopy temperature.”
The same questions in other papers
irrigation · growth · Oryza sativa (rice)Positive and negative results
221 papers in the same direction as this paper · 62 in the opposite direction · 7 reporting no difference from an alternative
- no effect
- negative
- negative
287 papers more in this group
See all 291 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.