Intervention effectmodel-written summary

P grain-yield use efficiency significantly decreased with increasing N fertilizer except at 337.5 kg ha 1.

A claim from Characteristics and Correlation Analysis of N and P Uptake and Utilization of Early Maturing Late Japonica under Different N Fertilizer Levels · 2012

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Taxon: riceOryza sativat0
Treatment: N fertilizere0
Outcome: P use efficiencies of grain yield productione0
Direction: decreasede0
Qualifier: except PUEg at 337.5 kg ha 1e0

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
“N and P use efficiencies of grain yield production(NUEg and PUEg) were significantly decreased with the increase of N fertilizer(except PUEg at 337.5 kg ha 1)”
✓ located verbatim in the source · abstract, characters 1198–1356

t0
“50 early-maturing late japonica rice varieties”
✓ located verbatim in the source · abstract, characters 40–86

Title

Characteristics and Correlation Analysis of N and P Uptake and Utilization of Early Maturing Late Japonica under Different N Fertilizer Levels

Hong Zhang ACTA AGRONOMICA SINICA 2012

Other claims from this paper (15)

Intervention effect Rice N concentration significantly increased with fertilizer across three stages.
Intervention effect Rice N accumulation significantly increased with fertilizer across three stages.
Intervention effect P concentration significantly increased with N fertilizer at elongation and heading.
Intervention effect P accumulation significantly increased with N fertilizer at elongation and heading.
Intervention effect Excess N fertilizer significantly decreased P accumulation at maturity.
Intervention effect N uptake rate significantly increased with N fertilizer from sowing to elongation.
Intervention effect P uptake rate significantly increased with N fertilizer from sowing to elongation.
Intervention effect N and P uptake rates first increased then decreased with more N fertilizer between elongation and heading.
Observation N and P uptake rates peaked at 225.0 kg ha 1 during heading to maturity.
Intervention effect N grain-yield use efficiency significantly decreased with increasing N fertilizer.
Observation N and P harvest indices followed a parabolic pattern with maximum at 262.5 kg ha 1 N.
Association N and P uptake and utilization were significantly synergistic across rice growth.
Association Rice yield was significantly correlated with N/P accumulation before heading.
Association Rice yield was significantly correlated with N/P uptake rate before heading.
Recommendation Authors conclude excess N fertilizer may fail to increase or decrease N and P uptake and utilization.

Record rev-e16ad83f4fc060c7a3cba7babb937d489fcf0154152b79272810551c006f19c2 · schema claims-v0.9 · position 11 in the model’s answer

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

3,455 papers: 3,183 positive, 272 negative or no effect

271 papers in the same direction as this claim · 3,183 in the opposite direction

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Alternative fertilization increased rice partial factor productivity of nitrogen (PFPN) by 4.7–6.9% relative to conventional fertilization.
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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.

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