Intervention effectmodel-written summary

PCU improved root length compared with LFP.

A claim from One-Time Application of Polymer-Coated Urea Increased Rice Yield and Plant Nitrogen Uptake by Optimizing Root Morphological and Physiological Traits · 2025

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Taxon: riceOryza sativat0
Treatment: PCUe0
Outcome: root lengthe0
Direction: increasede0
Comparator: LFPe0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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
“Compared to LFP, PCU significantly improved several root morphological traits, including increased deep-root proportion and specific root length (SRL), throughout the entire growth period; increased root length and root length density at heading and maturity; and increased root biomass growth rate from jointing to heading and reduced reduction rate after heading.”
✓ located verbatim in the source · abstract, characters 1379–1744

t0
“Rice”
✓ located verbatim in the source · title, characters 54–58

Title

One-Time Application of Polymer-Coated Urea Increased Rice Yield and Plant Nitrogen Uptake by Optimizing Root Morphological and Physiological Traits

Junlin Zhu; Song Chen; Chunmei Xu; et al. Agronomy 2025. doi:10.3390/agronomy15020282

Other claims from this paper (19)

Intervention effect PCU improved deep-root proportion compared with LFP.
Intervention effect PCU improved specific root length (SRL) compared with LFP.
Intervention effect PCU improved root length density compared with LFP.
Intervention effect PCU improved root biomass growth rate compared with LFP.
Intervention effect PCU improved reduction rate compared with LFP.
Intervention effect PCU enhanced root oxidative activity.
Intervention effect PCU increased Z+ZR content in roots.
Intervention effect PCU increased Z+ZR content in root bleeding sap.
Intervention effect PCU increased flag-leaf net photosynthetic rate.
Intervention effect PCU increased Z+ZR content in leaves.
Intervention effect PCU increased activities of key enzymes involved in sucrose-to-starch conversion in grains.
Association Root and shoot biomass growth rates correlated positively before heading.
Association Root biomass reduction rate correlated negatively with shoot growth rate after heading.
Association Root ROA and Z+ZR content were associated with flag-leaf photosynthetic rate.
Association Root ROA and Z+ZR content were associated with Z+ZR content in leaves.
Association Root ROA and Z+ZR content were associated with activities of key enzymes involved in the sucrose-to-starch conversion in grains.
Intervention effect PCU increased rice yield by 10.0% versus LFP.
Intervention effect PCU increased agronomic NUE by 46.2% versus LFP.
Mechanism Authors infer PCU optimizes roots to promote shoots, physiology, yield and NUE.

Record rev-e128df183aa757c6d09553cb6506eca1140be0bc1615868ecb0627c942b5048a · schema claims-v0.9 · position 3 in the model’s answer

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

511 papers: 402 positive, 109 negative or no effect

401 papers in the same direction as this claim · 101 in the opposite direction · 8 reporting no difference from an alternative

positive
Polymer coated urea reduced redundant early vegetative growth.
Polymer-coated urea application can increase both grain yield and nitrogen use efficiency injaponica-indicahybrid rice · 2022 · compared with CU treatment
Same directionCited by this paper
negative
N-deprivation caused the maximum reduction in shoot growth of rice seedlings.
Seed Priming Alters the Production and Detoxification of Reactive Oxygen Intermediates in Rice Seedlings Grown under Sub-optimal Temperature and Nutrient Supply · 2016
Opposite direction
negative
Tungstate, an NR inhibitor, considerably inhibited lateral root initiation when applied in addition to PNN.
Nitric oxide generated by nitrate reductase increases nitrogen uptake capacity by inducing lateral root formation and inorganic nitrogen uptake under partial nitrate nutrition in rice · 2015 · compared with PNN
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
Under high nitrogen, growth of the fungus inside rice is increased.
Diversity and genetics of nitrogen-induced susceptibility to the blast fungus in rice and wheat · 2013
Opposite direction
no effect
Ammonium as sole nitrogen source did not reduce rice growth.
Response of ammonium assimilation enzymes to nitrogen form treatments in different plant species¹ · 1991
Opposite direction
negative
High N treatment was associated with higher lodging index, especially in W3668.
Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice · 2016
Opposite direction
negative
Reducing the nitrogen rate lowered SPAD value and leaf area index.
Effect of side deep placement of nitrogen on yield and nitrogen use efficiency of single season late japonica rice · 2021
Opposite direction

502 papers more in this group

See all 511 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

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