Search claims · PlantClaims

2020s 17517

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen use efficiency showed a positive relationship with nitrogen uptake efficiency.

Compound: nitrogen uptake efficiencye0
Outcome: Nitrogen use efficiencye0
Direction: positivee0

Not reportedTaxon

Verbatim

e0
“Nitrogen use efficiency showed a positive relationship with nitrogen uptake efficiency, while the relationship with nitrogen utilization efficiency was insignificant”
✓ located verbatim in the source · abstract, characters 1338–1503

Title

Wheat, Barley, and Triticale Response to Nitrogen Fertilization in Pannonian Environment

Milan Mirosavljević; Vojislava Momčilović; Vladimir Aćin; et al. Agriculture 2025. doi:10.3390/agriculture15070683

Other claims from this paper (11)

Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The relationship of nitrogen use efficiency with nitrogen utilization efficiency was insignificant.

Compound: nitrogen utilization efficiencye0
Outcome: Nitrogen use efficiencye0

Not reportedTaxonDirection

Verbatim

e0
“Nitrogen use efficiency showed a positive relationship with nitrogen uptake efficiency, while the relationship with nitrogen utilization efficiency was insignificant”
✓ located verbatim in the source · abstract, characters 1338–1503

Title

Wheat, Barley, and Triticale Response to Nitrogen Fertilization in Pannonian Environment

Milan Mirosavljević; Vojislava Momčilović; Vladimir Aćin; et al. Agriculture 2025. doi:10.3390/agriculture15070683

Other claims from this paper (11)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen use efficiency and nitrogen uptake efficiency were higher with conventional than reduced tillage.

Taxon: ChickpeaCicer arietinumt0
Treatment: CTe0
Outcome: nitrogen use efficiency (NUE) and nitrogen uptake efficiency (NUpE)e0
Direction: highere0
Comparator: RTe0

Verbatim

e0
“nitrogen use efficiency (NUE) and nitrogen uptake efficiency (NUpE) were higher CT than RT”
✓ located verbatim in the source · abstract, characters 716–806

t0
“Chickpea”
✓ located verbatim in the source · title, characters 39–47

Title

Comparisons Nitrogen Use Efficiency in Chickpea under Different Tillage Systems and Soil Residual Nitrogen

Nihal KAYAN; İmren KUTLU; Nazife AYTER; et al. ÇOMÜ Ziraat Fakültesi Dergisi 2020. doi:10.33202/comuagri.662269

Other claims from this paper (4)

Intervention effect Chickpea plant protein ratio, plant nitrogen ratio and nitrogen utilization efficiency were higher with reduced than conventional tillage.
Intervention effect Increasing nitrogen doses did not affect chickpea plant protein or nitrogen ratios.
Intervention effect Nitrogen use and uptake efficiency decreased as nitrogen dose increased.
Intervention effect Nitrogen utilization efficiency increased with increasing nitrogen dose.

2010s 13818

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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 effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Optimized water and nitrogen supply improved nitrogen use efficiency, partial nitrogen production efficiency and water use efficiency.

Taxon: CucumberCucumis sativust0
Treatment: optimized water and nitrogen supplye0
Outcome: nitrogen use efficiency,partial nitrogen production efficiency,and the water use efficiencye0
Direction: improvede0

Not reportedComparator

Verbatim

t0
“Greenhouse Winter-spring Cucumber”
✓ located verbatim in the source · title, characters 100–133

e0
“optimized water and nitrogen supply improved nitrogen use efficiency,partial nitrogen production efficiency,and the water use efficiency”
✓ located verbatim in the source · abstract, characters 1542–1678

Title

Effects of Water and Nitrogen Supply on Dry Matter Accumulation,Nutrient Uptake and Distribution in Greenhouse Winter-spring Cucumber

Huijun Wu Acta Agriculturae Boreali-Sinica 2012

Other claims from this paper (17)

Observation Dry matter accumulation and nutrient uptake of cucumber had similar S-curve characteristics.
Observation The fruiting stage was the critical stage for dry matter accumulation and nutrient uptake.
Intervention effect Root dry matter was not significantly affected by the different water and nitrogen application patterns.
Intervention effect Dry matter of leaves, stems and fruits was affected by water and nitrogen application patterns during the fruiting stage.
Intervention effect Optimized water and nitrogen application rates improved dry matter accumulation and its ratio to total dry matter, especially in fruit.
Intervention effect Optimized water and nitrogen application rates decreased the root to shoot ratio.
Observation Cucumber absorbed 396 to 490 kg/ha N to attain a yield of 150 to 200 t/ha.
Observation Cucumber absorbed 93 to 127 kg/ha P.
Observation Cucumber absorbed 516 to 529 kg/ha K.
Observation Nutrient uptake followed the order K, N, P to attain a cucumber yield of 150 to 200 t/ha.
Observation The N:P:K ratio of nutrient uptake was 1:0.21:1.17 under optimized water and nitrogen application rates.
Intervention effect Nitrogen fertilization improved dry matter and nitrogen uptake of cucumber.
Intervention effect Reduced water supply improved dry matter and nitrogen uptake of cucumber.
Intervention effect Compared with conventional supply, optimized water and nitrogen application improved dry matter accumulation, nitrogen uptake and the ratio of nitrogen in fruit.
Intervention effect The ratios of P and K to N were increased by the optimized treatment.
Intervention effect The uptake of P and K was decreased by the optimized treatment.
Intervention effect Optimized water and nitrogen supply decreased luxury uptake of phosphorus and potassium.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Increased nitrogen accumulation enhanced agronomic and recovery nitrogen use efficiency.

Taxon: cottonGossypium hirsutumt0
Outcome: agronomic nitrogen use efficiency and recovery nitrogen use efficiencye0
Direction: enhancede0

Verbatim

e0
“enhanced agronomic nitrogen use efficiency and recovery nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 826–905

t0
“cotton”
✓ located verbatim in the source · title, characters 16–22

Title

Integrated soil-cotton management system enhances nitrogen use efficiency under different soil fertility levels

Xinyue Zhang; Hongkun Yang; Rizwan Zahoor; et al. Archives of Agronomy and Soil Science 2019. doi:10.1080/03650340.2019.1697874

Other claims from this paper (8)

Intervention effect Integrated management increased soil available nitrogen 9.5–21.2% in middle and later growth stages.
Intervention effect Integrated management improved average nitrogen accumulation rate 30.4–36.2%.
Intervention effect Integrated management improved maximum nitrogen accumulation rate 39.9–45.1%.
Intervention effect Integrated management postponed onset of rapid nitrogen accumulation by 3–6 days.
Intervention effect Integrated management raised final nitrogen accumulation 32.5–38.3%.
Observation Increased nitrogen accumulation improved leaf area index, leaf area duration, and boll number.
Recommendation Authors suggest omitting nitrogen fertilizer on more fertile soil under integrated management.
Observation Integrated management diminished the decline in nitrogen use efficiency.

2000s 5535

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Associationobservedoriginal resultmeasured

Claim · model-written summary

Path analysis showed that total nitrogen affected nitrogen use efficiency more than nitrogen utilization efficiency did.

Taxon: EggplantsSolanum melongenat0
Compound: total nitrogene0
Outcome: nitrogen use efficiencye0
Direction: more importante0
Comparator: nitrogen utilization efficiencye0

Verbatim

e0
“the effect of total nitrogen on nitrogen use efficiency was more important than nitrogen utilization efficiency”
✓ located verbatim in the source · abstract, characters 1406–1517

t0
“Eggplants”
✓ located verbatim in the source · title, characters 50–59

Title

Genotypic Variation in Nitrogen Use Efficiency in Eggplants

Li XiaoFeng Acta Agriculturae Boreali-Sinica 2007

Other claims from this paper (3)

Associationobservedoriginal resultmeasured

Claim · model-written summary

The contribution of nitrogen utilization efficiency to nitrogen use efficiency depended on nitrogen rate.

Taxon: summer maizeZea mayse1
Treatment: nitrogen ratee0
Outcome: nitrogen use efficiencye0
Qualifier: nitrogen utilization efficiencye0

Not reportedDirection

Verbatim

e0
“The contribution to nitrogen use efficiency was given by nitrogen utilization efficiency rely on nitrogen rate”
✓ located verbatim in the source · abstract, characters 1391–1501

e1
“summer maize accurately”
✓ located verbatim in the source · abstract, characters 1367–1390

Title

Genotypic variation in nitrogen use efficiency in summer maize

Bingnian Zhai Plant Nutrition and Fertilizing Science 2006

Other claims from this paper (10)

Observation Grain yield varied significantly among maize varieties at all nitrogen rates.
Observation Biological yield varied significantly among varieties at all nitrogen rates.
Observation Harvest index, nitrogen efficiency and responsiveness also varied among genotypes.
Observation Tested varieties were classified into four nitrogen efficiency and responsiveness types.
Observation Hudan 4, Shanzi 1 and Yedan 19 were high-efficiency, high-response types.
Observation Zhongdan 2 and Yuyu 22 were low-efficiency, low-response types.
Observation Shandan16, Shandan 902 and Hudan 2000 were high-efficiency, low-response types.
Observation Shandan 9 and Nongda108 were low-efficiency, high-response types.
Association Nitrogen accumulation did not accurately reflect nitrogen use efficiency.
Method / resource Nitrogen index reflected nitrogen use efficiency at all nitrogen rates.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Nitrogen index reflected nitrogen use efficiency at all nitrogen rates.

Taxon: summer maizeZea mayse1
Outcome: nitrogen use efficiencye0

Not reportedComparatorValue

Verbatim

e0
“the nitrogen index can well reflected the nitrogen use efficiency whatever nitrogen application rate”
✓ located verbatim in the source · abstract, characters 1506–1606

e1
“summer maize accurately”
✓ located verbatim in the source · abstract, characters 1367–1390

Title

Genotypic variation in nitrogen use efficiency in summer maize

Bingnian Zhai Plant Nutrition and Fertilizing Science 2006

Other claims from this paper (10)

1990s 1376

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Banded nitrogen increased nitrogen-use efficiency.

Taxon: tobaccoNicotiana tabacumt0
Outcome: efficiency of N usee0
Direction: increasede0

Not reportedTreatmentComparator

Verbatim

e0
“offers increased efficiency of N use”
✓ located verbatim in the source · abstract, characters 385–421

t0
“Tobacco Production”
✓ located verbatim in the source · title, characters 68–86

Title

Growth, Yield, and Efficiency of Potassium Fertilizer Use in Burley Tobacco Production

J. L. Sims; William O. Thom; Kenneth L. Wells; et al. UKnowledge (University of Kentucky) 1994

Other claims from this paper (4)

Intervention effect Banded nitrogen after transplanting alleviated manganese toxicity.
Intervention effect Banded nitrogen after transplanting alleviated other nutrient imbalances.
Intervention effect Banded nitrogen improved early tobacco growth and yield.
Association Posttransplant nitrogen fertilizer was less likely to leach in excess rain.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Onion had the highest nitrogen use efficiency ratio and physiological efficiency.

Taxon: OnionAllium cepae0
Outcome: nitrogen use efficiency ratio as well as physiological efficiencye0
Direction: higheste0

Verbatim

e0
“Onion had the highest nitrogen use efficiency ratio as well as physiological efficiency”
✓ located verbatim in the source · abstract, characters 579–666

Title

Fertilizer Nitrogen Uptake and Utilization Efficiency in Vegetables

B. R. V. Iyengar; T. N. Shivananda Journal of the Indian Society of Soil Science 1992

Other claims from this paper (9)

Observation Brinjal had the highest total nitrogen uptake among the six vegetables.
Observation Onion had the lowest total nitrogen uptake among the six vegetables.
Observation Tomato and onion relied more on fertilizer nitrogen.
Observation Brinjal, okra, French bean and chilli pepper absorbed more soil nitrogen.
Observation Brinjal had the highest average nitrogen uptake rate at 3.53 kg ha−1d−1.
Observation Chilli pepper had the lowest average nitrogen uptake rate at 0.6 kg ha−1 d−1.
Observation Chilli pepper recovered 13.9 per cent of fertilizer nitrogen.
Observation Brinjal recovered 44.7 per cent of fertilizer nitrogen.
Observation Brinjal had the highest agronomic efficiency.

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.

1980s 451

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Associationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Instantaneous photosynthetic nitrogen use efficiency explained little of prior field differences in overall nitrogen use efficiency.

Taxon: Pearl MilletCenchrus americanust0
Outcome: overall differences in N use efficiencye0
Qualifier: little explanatione0
Comparator: instantaneous measures of N use efficiencye0

Not reportedDirection

Verbatim

t0
“Pearl Millet”
✓ located verbatim in the source · title, characters 59–71

e0
“differences in instantaneous measures of N use efficiency occurring during photosynthesis offer little explanation for overall differences in N use efficiency among these genotypes in a previous field study”
✓ located verbatim in the source · abstract, characters 1603–1809

Title

Measurement of Instantaneous Nitrogen Use Efficiency among Pearl Millet Genotypes

G. Alagarswamy; J. C. Gardner; J. W. Maranville; et al. Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800040025x

Other claims from this paper (6)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen use efficiency declined as nitrogen rates rose across all corn hybrids.

Taxon: CORNZea mays subsp. mayst0
Treatment: nitrogen ratese0
Outcome: efficiency of nitrogen usee0
Direction: declinede0
Qualifier: all hybridse0

Verbatim

e0
“The overall efficiency of nitrogen use declined as nitrogen rates were increased in all hybrids”
✓ located verbatim in the source · abstract, characters 823–918

t0
“CORN”
✓ located verbatim in the source · title, characters 25–29

Title

DIFFERENTIAL RESPONSE OF CORN HYBRIDS TO APPLIED NITROGEN (EFFICIENCY UPTAKE)

Stephen Earl Hawkins Purdue e-Pubs (Purdue University System) 1985

Other claims from this paper (4)

Intervention effect Two corn hybrids did not convert increased nitrogen application into increased grain yield.
Intervention effect In the second study, hybrids generally responded to increasing nitrogen rates at both locations.
Intervention effect Split nitrogen applications did not increase yields at either location.
Observation Commercial corn hybrids differed in their response to applied nitrogen.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Overall rice nitrogen use efficiency averaged 45%.

Outcome: N use efficiencye0
Value: 45%e0

Not reportedTaxon

Verbatim

e0
“Overall N use efficiency averaged 45%.”
✓ located verbatim in the source · abstract, characters 605–643

t0
“rice”
✓ located verbatim in the source · title, characters 99–103

Title

Diffusion of ammonium and nitrate ions in flooded soil and nitrogen use efficiency of an irrigated rice system

M. Hanif Communications in Soil Science and Plant Analysis 1987. doi:10.1080/00103628709367890

Other claims from this paper (5)

1970s 179

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen application increased water-use efficiency.

Taxon: barleyHordeum vulgaret0
Treatment: nitrogene0
Outcome: efficiency of water usee0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Application of nitrogen, straw mulch and a foliar coating of kaolin increased the efficiency of water use”
✓ located verbatim in the source · abstract, characters 610–715

t0
“barley (Hordeum vulgare L.)”
✓ located verbatim in the source · title, characters 97–124

Title

Effect of nitrogen rates, mulching and antitranspirants on water use and water use efficiency of barley (Hordeum vulgare L.) varieties grown under dryland conditions

S. K. Agarwal; Rajat De The Journal of Agricultural Science 1979. doi:10.1017/s0021859600062754

Other claims from this paper (8)

Observation Ratna and Vijaya barley had similar water-use efficiency.
Observation Total water use differed little across treatments.
Intervention effect Straw mulch reduced evapotranspiration at tillering and pre-flowering stages.
Intervention effect Kaolin reduced evapotranspiration at tillering and pre-flowering stages.
Intervention effect Straw mulch enabled more water use at grain formation.
Intervention effect Kaolin enabled more water use at grain formation.
Intervention effect Straw mulch increased water-use efficiency.
Intervention effect Foliar kaolin increased water-use efficiency.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen fertilization substantially improved water-use efficiency.

Taxon: FIELD PEASt0
Treatment: Nitrogen fertilizatione0
Outcome: water-use efficiencye0
Direction: substantially improvede0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilization in the growth room experiment markedly increased plant weight, seed yield and protein content, and water-use efficiency was substantially improved.”
✓ located verbatim in the source · abstract, characters 315–485

t0
“FIELD PEAS”
✓ located verbatim in the source · title, characters 57–67

Title

EFFECTS OF NITROGEN AND MOISTURE ON YIELD AND PROTEIN IN FIELD PEAS

L. A. McLEAN; F. W. SOSULSKI; C. G. YOUNGS Canadian Journal of Plant Science 1974. doi:10.4141/cjps74-047

Other claims from this paper (9)

Observationobservedoriginal resultmeasured

Claim · model-written summary

At higher nitrogen rates nitrogen use efficiency declined to 5 to 7 kg DM/kg N.

Taxon: hill pasturese1
Treatment: higher ratese0
Outcome: efficiency of N usee0
Direction: reducede0
Value: 5 to 7 kg DM/kg Ne0

Verbatim

e0
“at higher rates the efficiency of N use was reduced to 5 to 7 kg DM/kg N”
✓ located verbatim in the source · abstract, characters 330–402

e1
“hill pastures”
✓ located verbatim in the source · abstract, characters 16–29

Title

NITROGEN FELTILIZER RESPONSES ON HILI. COUNTRY PASTURES

P.C. Luscombe Proceedings of the New Zealand Grassland Association 1979. doi:10.33584/jnzg.1979.41.1531

Other claims from this paper (5)

1960s 15

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Applied nitrogen increased sorghum water-use efficiency.

Taxon: Grain SorghumsSorghum bicolort0
Treatment: applied Ne0
Outcome: efficiency of water usee0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Irrigation and applied N both increased the efficiency of water use”
✓ located verbatim in the source · abstract, characters 298–365

t0
“Grain Sorghums”
✓ located verbatim in the source · title, characters 58–72

Title

Irrigation Water Management and Nitrogen Fertilization of Grain Sorghums¹

J. T. Musick; D. W. Grimes; G. M. Herron Agronomy Journal 1963. doi:10.2134/agronj1963.00021962005500030028x

Other claims from this paper (8)

Association Grain yield had a curvilinear relation with number of irrigations.
Association Grain yield had a curvilinear relation with soil moisture depletion.
Association Grain yield had a curvilinear relation with increments of applied nitrogen.
Association Sorghum evapotranspiration was related to number of irrigations.
Association Sorghum evapotranspiration was related to available soil moisture.
Intervention effect Growth response to applied nitrogen slightly increased sorghum evapotranspiration.
Intervention effect Irrigation increased sorghum water-use efficiency.
Observation Maximum sorghum water-use efficiency occurred at yield below maximum production.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Adding nitrogen improved cotton water use efficiency in some cases.

Taxon: CottonGossypium hirsutumt0
Treatment: addition of nitrogene0
Outcome: Water use efficiencye0
Direction: improvede0
Qualifier: in some casese0

Not reportedComparator

Verbatim

e0
“Water use efficiency (kg lint per cm of water used) was improved, in some cases, with the addition of nitrogen”
✓ located verbatim in the source · abstract, characters 906–1016

t0
“Cotton”
✓ located verbatim in the source · title, characters 14–20

Title

Functions for Cotton (Gossypium hirsutum L.) Production from Irrigation and Nitrogen Fertilization Variables: I. Yield and Evapotranspiration¹

Donald W. Grimes; H. Yamada; W. L. Dickens Agronomy Journal 1969. doi:10.2134/agronj1969.00021962006100050035x

Other claims from this paper (5)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Shoot-root ratios and efficiency of water use of bitterbrush differed with nitrogen and soil layer treatments.

Taxon: BitterbrushPurshia tridentatat0
Treatment: N and soil layer treatmentse3
Outcome: Shoot‐root ratios and efficiency of water usee3
Direction: differede3

Verbatim

t0
“Response of Bitterbrush Seedlings to Nitrogen and Moisture on a Granitic Soil”
✓ located verbatim in the source · title, characters 0–77

e3
“Shoot‐root ratios and efficiency of water use by bitterbrush differed with respect to N and soil layer treatments”
✓ located verbatim in the source · abstract, characters 849–962

Title

Response of Bitterbrush Seedlings to Nitrogen and Moisture on a Granitic Soil

J. O. Klemmedson; R. B. Ferguson Soil Science Society of America Journal 1969. doi:10.2136/sssaj1969.03615995003300060044x

Other claims from this paper (8)

Intervention effect Shoot and root weights were greater in surface-soil seedlings without added N than in seedlings from lower soil layers.
Intervention effect Added N reduced seedling yields on surface soils.
Intervention effect Added N increased seedling yields on the 40-90 cm soil layer.
Intervention effect A high moisture regime diminished the adverse effects of added N on seedlings grown in surface-layer soil.
Intervention effect A high moisture regime improved the effectiveness of added N on seedlings in lower-layer soils.
Observation Six granitic soils were deficient in nitrogen for barley.
Intervention effect Bitterbrush responded negatively or not at all to added N on the same soils.
Association Bitterbrush yields declined when plant N reached about 2.0 percent.

unknown 14

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Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors concluded endogenous ABA level modulates water and nitrogen use efficiency responses to elevated CO2.

Taxon: barley and tomatoSolanum lycopersicum Hordeum vulgaree0
Compound: ABAe0
Outcome: response of WUE and NUEe0
Qualifier: e[CO2] environmente0

Verbatim

e0
“endogenous ABA level played an important role in modulating the response of WUE and NUE of barley and tomato to e[CO2] environment”
✓ located verbatim in the source · abstract, characters 1059–1189

Title

Endogenous ABA level modulates the effects of CO2 elevation and soil water deficit on growth, water and nitrogen use efficiencies in barley and tomato plants

Wei, Zhenhua; Fang, Liang; Li, Xiangnan; et al. RePEc: Research Papers in Economics

Other claims from this paper (5)

Intervention effect Soil water deficit decreased aboveground dry matter, leaf area and specific leaf area in all barley and tomato genotypes.
Intervention effect Soil water deficit enhanced water use efficiency in all genotypes.
Intervention effect Elevated CO2 increased aboveground dry matter and leaf area in tomato genotypes.
Intervention effect Elevated CO2 reduced specific leaf area and leaf nitrogen concentration in wild type plants but not ABA-deficient mutants.
Intervention effect Elevated CO2 improved water and nitrogen use efficiencies in wild type plants but not ABA-deficient mutants.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Elevated CO2 improved water and nitrogen use efficiencies in wild type plants but not ABA-deficient mutants.

Taxon: barley and tomato plantsSolanum lycopersicum Hordeum vulgaree1
Material: WT plantse0
Treatment: e[CO2]e2
Outcome: WUE and nitrogen use efficiency (NUE)e0
Direction: improvede0
Qualifier: not in ABA-deficient mutantse0
Comparator: ambiente2

Verbatim

e0
“it reduced SLA, leaf N concentration while improved WUE and nitrogen use efficiency (NUE) in WT plants, not in ABA-deficient mutants”
✓ located verbatim in the source · abstract, characters 897–1029

e1
“barley and tomato plants”
✓ located verbatim in the source · abstract, characters 253–277

e2
“ambient (a[CO2], 400 ppm) and e[CO2] (800 ppm)”
✓ located verbatim in the source · abstract, characters 507–553

Title

Endogenous ABA level modulates the effects of CO2 elevation and soil water deficit on growth, water and nitrogen use efficiencies in barley and tomato plants

Wei, Zhenhua; Fang, Liang; Li, Xiangnan; et al. RePEc: Research Papers in Economics

Other claims from this paper (5)

Intervention effect Soil water deficit decreased aboveground dry matter, leaf area and specific leaf area in all barley and tomato genotypes.
Intervention effect Soil water deficit enhanced water use efficiency in all genotypes.
Intervention effect Elevated CO2 increased aboveground dry matter and leaf area in tomato genotypes.
Intervention effect Elevated CO2 reduced specific leaf area and leaf nitrogen concentration in wild type plants but not ABA-deficient mutants.
Mechanism The authors concluded endogenous ABA level modulates water and nitrogen use efficiency responses to elevated CO2.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Soil water deficit enhanced water use efficiency in all genotypes.

Taxon: barley and tomato plantsSolanum lycopersicum Hordeum vulgaree1
Treatment: soil water deficite0
Outcome: water use efficiency (WUE)e0
Direction: enhancede0
Comparator: well-watered regimee0

Verbatim

e0
“compared to well-watered regime, soil water deficit decreased aboveground dry matter (ADM), leaf area (LA) and specific leaf area (SLA) while enhanced water use efficiency (WUE) in all genotypes”
✓ located verbatim in the source · abstract, characters 642–836

e1
“barley and tomato plants”
✓ located verbatim in the source · abstract, characters 253–277

Title

Endogenous ABA level modulates the effects of CO2 elevation and soil water deficit on growth, water and nitrogen use efficiencies in barley and tomato plants

Wei, Zhenhua; Fang, Liang; Li, Xiangnan; et al. RePEc: Research Papers in Economics

Other claims from this paper (5)

1950s 9

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Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen increased water-use efficiency.

Taxon: CottonGossypium hirsutumt0
Treatment: Nitrogene0
Outcome: efficiency of water utilizatione0
Direction: increasede0

Not reportedComparator

Verbatim

e0
“Nitrogen increased the efficiency of water utilization.”
✓ located verbatim in the source · abstract, characters 155–210

t0
“Cotton”
✓ located verbatim in the source · title, characters 44–50

Title

The Interaction of Nitrogen and Moisture on Cotton Yields and Other Characteristics¹

C. E. Scarsbrook; O. L. Bennett; R. W. Pearson Agronomy Journal 1959. doi:10.2134/agronj1959.00021962005100120007x

Other claims from this paper (2)

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Adequate fertilizer and plant densities are required if maximum efficiency of moisture use is to be realized.

Taxon: CornZea mays subsp. mayst0
Outcome: maximum efficiency of moisture usee0

Verbatim

e0
“if maximum efficiency of moisture use is to be realized, adequate fertilizer and plant densities are required”
✓ located verbatim in the source · abstract, characters 1306–1415

t0
“Corn”
✓ located verbatim in the source · title, characters 32–36

Title

Evapotranspiration and Yield of Corn as Influenced by Moisture Level, Nitrogen Fertilization, and Plant Density

C. W. Carlson; J. Alessi; R. H. Mickelson Soil Science Society of America Journal 1959. doi:10.2136/sssaj1959.03615995002300030026x

Other claims from this paper (12)

Intervention effect N fertilizer did not influence corn yields in the nonirrigated treatment.
Intervention effect Plant density did not influence corn yields in the nonirrigated treatment.
Intervention effect In the irrigated treatment, corn yields increased in both plant densities when N fertilizer was applied.
Observation Grain yields were most influenced by the number of kernels produced per unit area.
Intervention effect N fertilizer did not appreciably affect the corn evapotranspiration rate.
Intervention effect Plant density did not appreciably affect the corn evapotranspiration rate.
Intervention effect Evapotranspiration was considerably greater for irrigation plots than for nonirrigation plots.
Observation Rates of evapotranspiration were higher in 1957 than in 1956.
Intervention effect Water-use efficiency (dry matter per inch of water used in evapotranspiration) was appreciably increased by using a high plant density.
Intervention effect Water-use efficiency (dry matter per inch of water used in evapotranspiration) was appreciably increased by N fertilizer.
Observation The increase in water-use efficiency was much less marked in the nonirrigated treatments than in the irrigated treatments.
Intervention effect Dry matter produced per inch of water used was greater on the nonirrigated than on the irrigated treatment, except at the high N rate in the high plant density.

Observationobservedoriginal resultmeasured

Claim · model-written summary

The increase in water-use efficiency was much less marked in the nonirrigated treatments than in the irrigated treatments.

Taxon: CornZea mays subsp. mayst0
Outcome: effecte0
Direction: less markede0
Qualifier: nonirrigated treatmentse0
Comparator: irrigatede0

Verbatim

e0
“This effect was much less marked in the nonirrigated treatments than in the irrigated”
✓ located verbatim in the source · abstract, characters 1014–1099

t0
“Corn”
✓ located verbatim in the source · title, characters 32–36

Title

Evapotranspiration and Yield of Corn as Influenced by Moisture Level, Nitrogen Fertilization, and Plant Density

C. W. Carlson; J. Alessi; R. H. Mickelson Soil Science Society of America Journal 1959. doi:10.2136/sssaj1959.03615995002300030026x

Other claims from this paper (12)

Intervention effect N fertilizer did not influence corn yields in the nonirrigated treatment.
Intervention effect Plant density did not influence corn yields in the nonirrigated treatment.
Intervention effect In the irrigated treatment, corn yields increased in both plant densities when N fertilizer was applied.
Observation Grain yields were most influenced by the number of kernels produced per unit area.
Intervention effect N fertilizer did not appreciably affect the corn evapotranspiration rate.
Intervention effect Plant density did not appreciably affect the corn evapotranspiration rate.
Intervention effect Evapotranspiration was considerably greater for irrigation plots than for nonirrigation plots.
Observation Rates of evapotranspiration were higher in 1957 than in 1956.
Intervention effect Water-use efficiency (dry matter per inch of water used in evapotranspiration) was appreciably increased by using a high plant density.
Intervention effect Water-use efficiency (dry matter per inch of water used in evapotranspiration) was appreciably increased by N fertilizer.
Intervention effect Dry matter produced per inch of water used was greater on the nonirrigated than on the irrigated treatment, except at the high N rate in the high plant density.
Recommendation Adequate fertilizer and plant densities are required if maximum efficiency of moisture use is to be realized.

“nitrogen use efficiency”

Claim types

Direction of the findings

Over time

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Statistics

2020s 17517

2010s 13818

2000s 5535

1990s 1376

1980s 451

1970s 179

1960s 15

unknown 14

1950s 9