Claim · model-written summary
Biochar application increased internal N use efficiency by 7-11% in the fifth and sixth seasons.
- Taxon
- rice
Oryza sativat0 - Treatment
- biochar applicatione0
- Outcome
- internal N use efficiencye0
- Direction
- increasese0
- Value
- 7-11%e0
- Qualifier
- in the fifth and sixth seasonse0
- Setting
- Yongan Town, Hunan Province, Chinae1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Continuous applications of biochar to rice”
e1“A fixed field experiment was done in Yongan Town, Hunan Province, China”
e0“biochar application led to 7-11% increases in internal N use efficiency in the fifth and sixth seasons and 6% increase in grain yield in the sixth season”
Title
Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization
Min Huang; Long Fan; Jiana Chen; et al. Scientific Reports 2018. doi:10.1038/s41598-018-29877-7
Other claims from this paper (9)
- Intervention effect Biochar application did not significantly affect soil N uptake in the first four seasons.
- Intervention effect Biochar application did not have a significant effect on fertilizer N uptake in three of the first four seasons.
- Intervention effect In the fifth and sixth seasons, biochar application increased soil N uptake by 14-26%.
- Intervention effect In the fifth and sixth seasons, biochar application decreased fertilizer N uptake by 19-26%.
- Mechanism The decreased fertilizer N uptake with biochar application is attributed to decreased fertilizer N availability and increased N loss through ammonia volatilization.
- Association Soil N availability did not explain the increase in soil N uptake under biochar application.
- Intervention effect The effect of biochar application on total N uptake was not significant in the fifth and sixth seasons.
- Intervention effect Biochar application increased grain yield by 6% in the sixth season.
- Association The effects of repeated seasonal biochar applications on N uptake and utilization in rice depend on the duration of application.