Search claims · PlantClaims

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher irrigation increased nitrogen use efficiency and assimilatory nitrogen use efficiency.

Taxon: Fraser Firt0
Treatment: Higher irrigation treatmentse0
Outcome: nitrogen use efficiency (NUE) and assimilatory nitrogen use efficiencye0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Higher irrigation treatments increased nitrogen use efficiency (NUE) and assimilatory nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 670–779

t0
“Fraser Fir”
✓ located verbatim in the source · title, characters 62–72

Title

Growth, Biomass, and Nitrogen Use Efficiency of Containerized Fraser Fir (Abies fraseri) as Related to Irrigation and Nitrogen Fertilization

Pascal Nzokou; Bert M. Cregg HortScience 2010. doi:10.21273/hortsci.45.6.946

Other claims from this paper (11)

Intervention effect Height growth increased by 12% to 35% with increased irrigation.
Intervention effect Stem diameter growth increased by 4% to 32% with increased irrigation.
Association Irrigation was inversely related to foliar nitrogen content.
Intervention effect Irrigation had no effect on foliar phosphorus, potassium, magnesium and manganese.
Intervention effect Irrigation increased foliar calcium.
Observation Approximately 2.0% to 4.5% of applied nitrogen was lost through leaching.
Mechanism High irrigation increased total biomass through greater root and stem biomass.
Mechanism Higher irrigation may raise nitrogen use efficiency through increased carbon assimilation and net primary productivity.
Intervention effect Irrigation had no clear effect on root weight ratio.
Intervention effect The lowest irrigation gave a higher index of nitrogen availability per unit foliage.
Mechanism Under water stress, nutrient supply to organs may buffer reduced assimilation and nitrogen use efficiency.

Intervention effectauthor interpretationoriginal resultmeasured

Claim · model-written summary

Nitrogen fertilization enhanced water-use efficiency at the expense of nitrogen-use efficiency.

Taxon: Avicennia marinaAvicennia marinat0
Treatment: +Ne0
Outcome: WUEe0
Direction: enhancede0
Qualifier: at the expense of NUEe0

Not reportedComparator

Verbatim

e0
“Hence, +N enhanced WUE at the expense of NUE”
✓ located verbatim in the source · abstract, characters 1156–1200

t0
“grey mangrove, Avicennia marina”
✓ located verbatim in the source · abstract, characters 94–125

Title

Nitrogen fertilization enhances water-use efficiency in a saline environment

KATHERINE C. MARTIN; DAN BRUHN; CATHERINE E. LOVELOCK; et al. Plant Cell & Environment 2009. doi:10.1111/j.1365-3040.2009.02072.x

Other claims from this paper (8)

Intervention effect Phosphorus fertilization had no significant effect on shoot growth.
Intervention effect Nitrogen fertilization enhanced canopy development, particularly in scrub trees.
Observation Scrub trees had greater water-use efficiency than fringe trees.
Observation Scrub trees had lower nitrogen-use efficiency than fringe trees.
Intervention effect Nitrogen-fertilized trees had similar CO2 assimilation rates to other treatments.
Intervention effect Nitrogen-fertilized trees achieved assimilation at lower transpiration rates, stomatal conductance and intercellular CO2 concentrations.
Observation Nitrogen-fertilized trees had greater nitrogen content per unit leaf area.
Observation Nitrogen-fertilized and scrub control trees had less negative foliar delta13C values.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen use efficiency increased under nitrogen limitation.

Taxon: Spartium junceumSpartium junceumt0
Treatment: nitrogen limitatione0
Outcome: Nitrogen use efficiencye0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Nitrogen use efficiency increased under nitrogen limitation.”
✓ located verbatim in the source · abstract, characters 915–975

t0
“Spartium junceum”
✓ located verbatim in the source · title, characters 94–110

Title

Partitioning Growth and Photosynthesis between Leaves and Stems During Nitrogen Limitation in Spartium junceum

Erik Tallak Nilsen American Journal of Botany 1992. doi:10.2307/2445047

Other claims from this paper (11)

Intervention effect Nitrogen limitation reduced aboveground growth.
Intervention effect Nitrate limitation reduced leaf area more than stem area.
Intervention effect Supplemental ammonium increased growth.
Intervention effect Supplemental ammonium increased stem area more than leaf area.
Intervention effect Excess ammonium decreased leaf and stem growth.
Intervention effect Under nitrogen limitation stems contained more nitrogen than leaves.
Intervention effect Nitrogen limitation reduced stem assimilation.
Intervention effect Nitrogen limitation reduced leaf assimilation.
Intervention effect Stem contribution to daily carbon gain increased while that of leaves decreased.
Intervention effect Leaf contribution to daily carbon gain decreased under nitrogen limitation.
Association Stem and leaf assimilation had similar linear relationships with tissue nitrogen concentration.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Males had higher photosynthetic nitrogen use efficiency.

Taxon: Populus cathayanaPopulus cathayanat0
Outcome: photosynthetic nitrogen use efficiencye1
Direction: highere1

Verbatim

t0
“Populus cathayana”
✓ located verbatim in the source · title, characters 70–87

e1
“higher nitrogen use efficiency (photosynthetic nitrogen use efficiency)”
✓ located verbatim in the source · abstract, characters 989–1060

Title

Differences in carbon and nitrogen metabolism between male and female Populus cathayana in response to deficient nitrogen

Xiaoyi Wu; Jiantong Liu; Qiqi Meng; et al. Tree Physiology 2020. doi:10.1093/treephys/tpaa108

Other claims from this paper (9)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Intrinsic water use efficiency and photosynthetic nitrogen use efficiency were negatively correlated.

Taxon: white sprucePicea glaucat0
Compound: nitrogene0
Outcome: intrinsic water use efficiencye0
Direction: negative correlatione0

Verbatim

e0
“There was a negative correlation between intrinsic water use efficiency and photosynthetic nitrogen use efficiency (NUE).”
✓ located verbatim in the source · abstract, characters 1986–2107

t0
“white spruce”
✓ located verbatim in the source · title, characters 114–126

Title

The effects of nitrogen stress on the stable carbon isotope composition, productivity and water use efficiency of white spruce (Picea glauca (Moench) Voss) seedlings

N. J. LIVINGSTON; R. D. GUY; Z. J. SUN; et al. Plant Cell & Environment 1999. doi:10.1046/j.1365-3040.1999.00400.x

Other claims from this paper (11)

Observation Cross ranking by needle δ13C persisted across water and nitrogen treatments.
Association There was no significant genetic by environment interaction.
Association Needle δ13C correlated positively with water use efficiency.
Association Needle δ13C correlated positively with dry matter production.
Intervention effect Nitrogen stressed seedlings had the lowest needle δ13C under both water conditions.
Association Needle nitrogen content correlated positively with δ13C.
Intervention effect Lower nitrogen supply appeared to increase stomatal conductance.
Intervention effect Lower nitrogen supply appeared to lower water use efficiency.
Observation NUE varied significantly among genotypes and persisted across treatments.
Observation The authors found no detectable anaplerotic carbon fixation effect.
Method / resource Using 29‰ for net discrimination gave excellent agreement between gas exchange and δ13C C i/C a estimates.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Greater nitrogen availability decreased χ and increased water-use efficiency.

Taxon: Acer saccharumAcer saccharumt0
Outcome: χe0
Direction: decreasede0
Qualifier: increased water-use efficiencye0

Not reportedTreatment

Verbatim

e0
“decreased χ (i.e, increased water-use efficiency).”
✓ located verbatim in the source · abstract, characters 1167–1217

t0
“Acer saccharum”
✓ located verbatim in the source · title, characters 105–119

Title

Increasing nitrogen availability increases water-use efficiency and decreases nitrogen-use efficiency in Acer saccharum

Evan A Perkowski; David W Frey; Christine L Goodale; et al. Tree Physiology 2025. doi:10.1093/treephys/tpaf119

Other claims from this paper (11)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsurface application improved nitrogen use efficiency.

Taxon: Murcott mandarint0
Treatment: Subsurface applicatione0
Outcome: nitrogen use efficiencye0
Direction: improvede0

Not reportedComparator

Verbatim

e0
“Subsurface application improved nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 826–881

t0
“Murcott mandarin”
✓ located verbatim in the source · title, characters 68–84

Title

The effect of different levels of subsoil nitrogen fertilization on Murcott mandarin trees

The future of Horticulture 2024. doi:10.37229/fsa.fjh.2024.11.15

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen supply reduced photosynthetic nitrogen use efficiency in leaves.

Taxon: Quercus serrataQuercus serratat0
Organ / stage: leavese0
Treatment: N supplye0
Outcome: photosynthetic nitrogen use efficiencye0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Within leaves, N supply reduced the photosynthetic nitrogen use efficiency (PNUE)”
✓ located verbatim in the source · abstract, characters 904–985

t0
“Quercus serrata seedlings”
✓ located verbatim in the source · title, characters 27–52

Title

Nitrogen use efficiency of Quercus serrata seedlings under different soil nitrogen and phosphorus supplies

Benhui ZHU; Takeshi IZUTA; Makoto WATANABE Journal of Agricultural Meteorology 2019. doi:10.2480/agrmet.d-19-00032

Other claims from this paper (8)

Intervention effect Nitrogen supply reduced seedling nitrogen use efficiency.
Intervention effect Nitrogen supply decreased nitrogen productivity.
Intervention effect Nitrogen supply decreased mean residence time of nitrogen.
Intervention effect Phosphorus supply enhanced nitrogen use efficiency.
Intervention effect Phosphorus supply did not significantly change the reduction of nitrogen use efficiency with increasing nitrogen.
Intervention effect Phosphorus supply affected nitrogen productivity responses to increasing nitrogen.
Intervention effect Phosphorus supply affected mean residence time responses to increasing nitrogen.
Intervention effect Phosphorus alleviated the nitrogen-induced reduction of photosynthetic nitrogen use efficiency.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen-use efficiency peaked at intermediate nitrogen input.

Taxon: avocadoPersea americanat0
Treatment: intermediate nitrogen input (∼N20)e0
Outcome: Nitrogen-use efficiencye0
Direction: peakede0
Setting: controlled lysimetric experimente0

Not reportedComparator

Verbatim

e0
“Nitrogen-use efficiency peaked at an intermediate nitrogen input (∼N20), indicating a constrained optimal range in the controlled lysimetric experiment.”
✓ located verbatim in the source · abstract, characters 1679–1831

t0
“Avocado”
✓ located verbatim in the source · title, characters 24–31

Title

Precision management in Avocado: UAV-based monitoring of nitrogen use efficiency, yield, and postharvest quality

Iaroslav Grozdov; Ran Erel; Shahar Baram; et al. Smart Agricultural Technology 2026. doi:10.1016/j.atech.2026.102181

Other claims from this paper (5)

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

T5 significantly improved nitrogen use efficiency.

Taxon: cocoaTheobroma cacaot0
Treatment: T5e0
Outcome: Nitrogen use efficiency (NUE)e0
Direction: improvemente0

Not reportedComparator

Verbatim

e0
“Plots treated with T5 showed significant improvement in Nitrogen use efficiency (NUE), Phosphorus use efficiency, and Potassium use efficiency (KUE).”
✓ located verbatim in the source · abstract, characters 1301–1450

t0
“cocoa”
✓ located verbatim in the source · title, characters 120–125

Title

Augmentation of mineral fertilizer with organic nutrient sources to improve soil quality and nutrient use efficiency in cocoa landscape in Ghana

Joseph Anokye; Akwasi Adutwum Abunyewa; Uffe Jørgensen; et al. Journal of Plant Nutrition 2025. doi:10.1080/01904167.2025.2481132

Other claims from this paper (9)

Intervention effect Medium shade had lower soil temperature and higher water content.
Observation Shade system and soil amendment significantly affected soil pH, organic carbon, total N, available P and cation exchange capacity.
Intervention effect Shade and amendments particularly enhanced soil organic carbon and nitrogen.
Intervention effect Adding compost to mineral fertilizer improved microbial biomass carbon, nitrogen and phosphorus.
Intervention effect T5 significantly improved phosphorus use efficiency.
Intervention effect T5 significantly improved potassium use efficiency.
Intervention effect Rock phosphate improved availability of N, P and K for uptake.
Association A 1% increase in soil N was associated with a 79% increase in nitrogen use efficiency.
Association A 1% increase in soil N was associated with a 111% increase in potassium use efficiency.

“nitrogen use efficiency”

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