Intervention effectmodel-written summary

Optimized N fertilizer management increased canopy photoassimilation in direct-seeded rice, with suitable leaf area.

A claim from Effects of optimized nitrogen fertilizer management on the yield, nitrogen uptake, and ammonia volatilization of direct‐seeded rice · 2023

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: riceOryza sativae0
Treatment: Optimized N fertilizer managemente5
Outcome: canopy photoassimilatione5
Direction: highere5
Qualifier: suitable leaf areae5

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Oryza sativa* · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0
“Direct‐seeded rice has been developed rapidly because of labor savings”
✓ located verbatim in the source · abstract, characters 20–90

e5
“Optimized N fertilizer management achieved delayed senescence (maintenance of higher leaf Soil Plant Analysis Development meter values in late reproduction), higher canopy photoassimilation (suitable leaf area), higher N fertilizer use efficiency, and less N loss (lower cumulative NH 3 volatilization)”
✓ located verbatim in the source · abstract, characters 1336–1638

Title

Effects of optimized nitrogen fertilizer management on the yield, nitrogen uptake, and ammonia volatilization of direct‐seeded rice

Shihao Ma; Guibing Wang; Sumiao Su; et al. Journal of the Science of Food and Agriculture 2023. doi:10.1002/jsfa.12530

Other claims from this paper (12)

Intervention effect The N4 fertilizer treatment improved direct-seeded rice grain yield by 5.1% compared with conventional fertilizer (N2).
Intervention effect The N4 fertilizer treatment decreased NH3 volatilization by 20.4% compared with conventional fertilizer (N2) in direct-seeded rice.
Association Panicle number per unit area was the key factor determining direct-seeded rice yield, explaining 72%.
Intervention effect Excessive basal N (N1) reduced seedling emergence by 45.3% compared with the N4 treatment.
Intervention effect Excessive basal N (N1) reduced N use efficiency by 160.6% compared with the N4 treatment.
Intervention effect Excessive basal N (N1) reduced yield by 6.9% compared with the N4 treatment.
Intervention effect Excessive basal N (N1) increased NH3 volatilization by 28.1% compared with the N4 treatment.
Intervention effect Removing basal N fertilizer (N5) reduced spike number by 13.0% compared with the N4 treatment.
Intervention effect Removing basal N fertilizer (N5) reduced yield by 6.9% compared with the N4 treatment.
Intervention effect Removing basal N fertilizer (N5) minimized NH3 volatilization compared with the N4 treatment.
Intervention effect Optimized N fertilizer management delayed senescence in direct-seeded rice, with higher leaf SPAD values in late reproduction.
Intervention effect Optimized N fertilizer management increased N fertilizer use efficiency in direct-seeded rice.

Record rev-e7dfb3113016181659d70deb5b5263c1d67c28f6f38eb851ebceee107d341025 · schema claims-v0.9 · position 12 in the model’s answer

fertilization · growth · Oryza sativa (rice)Positive and negative results

759 papers: 670 positive, 89 negative or no effect

669 papers in the same direction as this claim · 81 in the opposite direction · 8 reporting no difference from an alternative

positive
Deep placement of N fertilization (MD and MDB) promoted root morphological indexes: total root volume, total root length and root superficial area.
Productivity and profitability of mechanized deep nitrogen fertilization in mechanical pot‐seedling transplanting rice in South China · 2020
Same directionCited by this paper
positive
Delayed tillering fertilizer increased root activity after jointing compared with conventional nitrogen treatment.
Delayed timing of tillering fertilizer improved grain yield and nitrogen use efficiency in japonica rice · 2020 · compared with conventional N treatment
Same directionCited by this paper
negative
Salt stress inhibited overall seedling growth.
A hydroponic rice seedling culture model system for investigating proteome of salt stress in rice leaf · 2005
Opposite direction
negative
Higher nitrogen increased Wuyunjing23 plant height and inner culm diameters.
Lodging Resistance of Japonica Rice (Oryza Sativa L.): Morphological and Anatomical Traits due to top-Dressing Nitrogen Application Rates · 2016
Opposite direction
negative
Increasing top-dressing N raised or reduced lodging rate as reported for two japonica rice varieties.
Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice · 2016
Opposite direction
no effect
Combining biochar with manure did not produce a positive synergistic effect on rice growth.
The interactive effects of biochar and cow manure on rice growth and selected properties of salt-affected soil · 2018
Opposite direction
no effect
Rice root biomass was not greatly affected by fertilization.
Use of ¹⁵ N‐Labeled Soil in Measuring Nitrogen Fertilizer Recovery Efficiency in Transplanted Rice · 2000
Opposite direction
no effect
No significant differences in macronutrients were found in rice leaves with compost application.
Effect of mineral and organic amendments on rice growth and yield in saline soils · 2021
Opposite direction

750 papers more in this group

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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.

Other papers on the same question

fertilization · growth · Oryza sativa (rice)Positive and negative results