Intervention effectmodel-written summary

Optimized N fertilizer management delayed senescence in direct-seeded rice, with higher leaf SPAD values in late reproduction.

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: senescencee5
Direction: delayede5
Qualifier: maintenance of higher leaf Soil Plant Analysis Development meter values in late reproductione5

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

Record rev-c12aef345e71ee90ca03738c0def62a5024e8f9ff226e549fdd8869f199a2807 · schema claims-v0.9 · position 11 in the model’s answer

fertilization · quality: postharvest · Oryza sativa (rice)Positive and negative results

22 papers: 20 positive, 2 negative or no effect

19 papers in the same direction as this claim · 2 in the opposite direction

no effect
Any element of fertilizer and any kind of soil texture left the texture of rice kernel unchanged.
Studies on the Soft-Textured Rice Kernel : VIII. Kinds of soil texture and the three essential elements of fertilizer in the formation of soft-textured rice kernel · 1963
Opposite direction
negative
Excess nitrogen fertilizer caused early senescence and lodging.
A Preliminary Study of Postponing Nitrogen Fertilisers on Rice · 2012
Opposite direction
positive
Nitrogen top dressing reduced white belly and ill ripening kernels.
Studies on White Belly Rice Kernel : III. Effect of ripening conditions on occurrence of white belly kernel · 1975
Same direction
positive
hardness was lower under CRNF than CK.
Effects of a one‐time application of controlled‐release nitrogen fertilizer on quality and yield of rice · 2022 · compared with CK
Same direction
positive
The authors conclude the combined placement can delay leaf senescence.
Side deep placement of slow-release N as base fertilizer combined with urea as panicle fertilizer increases rice yield by optimizing dry matter and N accumulation and translocation · 2025
Same direction
positive
Leaf color chart values increased significantly with nitrogen fertilizer.
Effect of Split Application of Nitrogen Fertilizer on Leaf Color Chart Values in Hybrid Rice (GRH1) · 2012
Same direction
positive
Flag leaf senescence was delayed when basal and tillering fertilizer were reduced and earring fertilizer increased.
Effect of nitrogen application on the senescence of flag leaf and yield of rice cultivated in aerobic soil · 2004
Same direction
positive
Potassium silica top dressing enhanced ripening percentage.
Role of the Hull in the Ripening of Rice Plant : VII. Effects of supplying of silica and potassium during reproductive growth stage on the form and function of hulls · 1983
Same direction

13 papers more in this group

See all 22 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.

Other papers on the same question

fertilization · quality: postharvest · Oryza sativa (rice)Positive and negative results