Search claims · PlantClaims

Intervention effect 1449

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Onion trial result: N use efficiency (NUE) was higher.

Taxon: OnionAllium cepat0
Treatment: drip systeme0
Outcome: N use efficiency (NUE)e0
Direction: highere0
Comparator: furrow systeme0

Verbatim

t0
“Onion”
✓ located verbatim in the source · title, characters 20–25

e0
“Irrigation water use efficiency (IWUE) and N use efficiency (NUE) were higher with the drip system than with the furrow system”
✓ located verbatim in the source · abstract, characters 1111–1237

Title

Nitrogen Effects on Onion Yield Under Drip and Furrow Irrigation

Ardell D. Halvorson; Michael E. Bartolo; Curtis A. Reule; et al. Agronomy Journal 2008. doi:10.2134/agronj2007.0377

Other claims from this paper (13)

Intervention effect Onion trial result: water was less by 72%.
Intervention effect Onion trial result: water was less by 57%.
Intervention effect Onion trial result: Onion yields was greater.
Intervention effect Onion trial result: Total marketable fresh onion yield was increased.
Intervention effect Onion trial result: colossal and jumbo sized onions was more.
Intervention effect Onion trial result: medium sized onions was less.
Observation Onion trial result: Biomass production was accelerated.
Observation Onion trial result: N accumulation was accelerated.
Observation Onion trial result: total N accumulation was accelerated by 121 kg N ha −1.
Intervention effect Onion trial result: Irrigation water use efficiency (IWUE) was higher.
Intervention effect Onion trial result: Residual soil NO 3 –N levels was greater.
Intervention effect Onion trial result: soil NO 3 –N levels was similar.
Intervention effect Onion trial result: Adjusted gross economic returns was greater.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen use efficiency (NUE) reached or changed as reported under 75 kg N ha^{-1}.

Taxon: maize (Zea mays L.)Zea mayse1
Treatment: 75 kg N ha^{-1}e0
Outcome: Nitrogen use efficiency (NUE)e0
Direction: optimume0

Not reportedComparatorSettingValue

Verbatim

e0
“Nitrogen use efficiency (NUE) was optimum at 75 kg N ha^{-1} during both seasons”
✓ located verbatim in the source · abstract, characters 1365–1445

e1
“maize (Zea mays L.)”
✓ located verbatim in the source · abstract, characters 86–105

Title

Optimizing water and nitrogen use for maize production under semiarid conditions

HAFIZ MOHKUM HAMMAD; ASHFAQ AHMAD; FARHAT ABBAS; et al. TURKISH JOURNAL OF AGRICULTURE AND FORESTRY 2012. doi:10.3906/tar-1111-24

Other claims from this paper (12)

Intervention effect photosynthesis reached or changed as reported under 225 kg ha^{-1}.
Intervention effect transpiration reached or changed as reported under 225 kg ha^{-1}.
Intervention effect leaf area index reached or changed as reported under 225 kg ha^{-1}.
Intervention effect grain yield reached or changed as reported under 225 kg ha^{-1}.
Intervention effect crop growth rate reached or changed as reported under 300 kg N ha^{-1}.
Intervention effect biological yield reached or changed as reported under 300 kg N ha^{-1}.
Intervention effect water use efficiency (WUE) reached or changed as reported under 225 kg N ha^{-1}.
Intervention effect grain yield reached or changed as reported under Water stress.
Intervention effect grain yield reached or changed as reported under Water stress.
Intervention effect Water and nitrogen treatments significantly affected crop growth and development.
Intervention effect For semiarid Pakistan, 525 mm water with 225 kg N per hectare gave optimum irrigated maize production.
Recommendation The authors proposed 525 mm water with 225 kg N per hectare as best management practice for comparable regions.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The AI1 alternate irrigation treatment did not significantly decline tomato yield, total N uptake (TNU) or N use efficiency (NUE).

Taxon: tomatoSolanum lycopersicumt0
Treatment: AI1e0
Outcome: yield, total N uptake (TNU) and N use efficiency (NUE)e0
Direction: did not declinee0

Not reportedComparator

Verbatim

e0
“AI1 did not decline yield, total N uptake (TNU) and N use efficiency (NUE) significantly”
✓ located verbatim in the source · abstract, characters 1200–1288

t0
“tomato”
✓ located verbatim in the source · title, characters 110–116

Title

Influences of alternate partial root-zone irrigation and urea rate on water- and nitrogen-use efficiencies in tomato

Liu Xiaogang; Li Fusheng; Zhang Fucang; et al. International journal of agricultural and biological engineering 2017. doi:10.25165/j.ijabe.20171006.2541

Other claims from this paper (13)

Intervention effect Compared with conventional irrigation, alternate partial root-zone irrigation decreased water consumption of tomato by 16.0%-33.1%.
Intervention effect Compared with conventional irrigation, alternate partial root-zone irrigation increased water use efficiency of yield (WUEy) of tomato by 6.7%-11.9%.
Intervention effect Compared with conventional irrigation, alternate partial root-zone irrigation increased water use efficiency of dry mass (WUEd) of tomato by 10.2%-15.9%.
Intervention effect Compared with the low urea rate (NL), the middle urea rate (NM) enhanced tomato yield by 28.5%.
Intervention effect Compared with NL, NM enhanced tomato total N uptake (TNU) by 35.3%.
Intervention effect Compared with NL, NM enhanced tomato WUEy by 22.6%.
Intervention effect Compared with NL, NM enhanced tomato WUEd by 16.3%.
Intervention effect Compared with CINL, AI1NM reduced tomato water consumption by 12.5%.
Intervention effect Compared with CINL, AI1NM increased tomato yield by 35.5%.
Intervention effect Compared with CINL, AI1NM increased tomato total N uptake (TNU) by 58.4%.
Intervention effect Compared with CINL, AI1NM increased tomato WUEy by 54.4%.
Intervention effect Compared with CINL, AI1NM increased tomato WUEd by 53.7%.
Recommendation The authors conclude that AI1 can improve water use efficiency and total N uptake of tomato simultaneously at a medium urea rate.

Observation 598

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Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Physiological N use efficiency of the low-NUE cultivar Elio was about 18% lower than that of high-NUE cultivars.

Taxon: riceOryza sativae0
Material: Elioe5
Outcome: PEe5
Direction: lowere5
Value: 18%e5
Comparator: high NUE cultivarse5

Verbatim

e0
“Effects of N fertilizer application rates on grain yield and physiological N use efficiency (PE) in relation to the accumulation and redistribution of biomass and N in rice (Oryza sativa L.) cultivars were studied”
✓ located verbatim in the source · abstract, characters 138–351

e5
“Grain yield and PE of Elio were about 20% and 18% lower than those of high NUE cultivars”
✓ located verbatim in the source · abstract, characters 848–936

Title

Genotypic Differences in Grain Yield and Physiological Nitrogen Use Efficiency Among Rice Cultivars

Zhang Ya 土壤圈(英文版) 2009

Other claims from this paper (6)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Moisture and nitrogen significantly influenced WUE and NUE.

Taxon: wheatTriticum aestivumt0
Outcome: water use efficiency (WUE), N use efficiency (NUE)e0

Verbatim

e0
“Soil moisture and N application rate significantly influenced water use efficiency (WUE), N use efficiency (NUE)”
✓ located verbatim in the source · abstract, characters 884–996

t0
“wheat”
✓ located verbatim in the source · title, characters 45–50

Title

Soil moisture and nitrogen content influence wheat yield through their effects on the root system and soil bacterial diversity under drip irrigation

Guochun Li; Wenquan Niu; Jun Sun; et al. Land Degradation and Development 2021. doi:10.1002/ldr.3967

Other claims from this paper (9)

Observation Moisture and nitrogen significantly influenced yield.
Observation Moisture and nitrogen significantly influenced bacterial abundance and diversity.
Observation Nitrogen decreased bacterial richness without irrigation.
Observation Nitrogen first increased then decreased richness under irrigation.
Observation Soil moisture was the main driver of dominant bacterial taxa.
Observation Roots and bacterial diversity influenced yield.
Observation I1N1 had the highest root weight density, WUE and NUE.
Observation I1N1 increased wheat yield.
Observation I1N1 had the least effect on bacterial diversity.

Observationobservedoriginal resultmeasured

Claim · model-written summary

N internal efficiency accounted for 52% of the variation in heterosis for NUE.

Taxon: MaizeZea mayst0
Outcome: variation in heterosis for NUEe1
Value: 52%e1

Verbatim

t0
“Physiological Basis of Heterosis for Nitrogen Use Efficiency of Maize”
✓ located verbatim in the source · title, characters 0–69

e1
“N internal efficiency (NIE) accounted for 52% of the variation in heterosis for NUE”
✓ located verbatim in the source · abstract, characters 834–917

Title

Physiological Basis of Heterosis for Nitrogen Use Efficiency of Maize

Zhigang Wang; Bao-Luo Ma; Xiaofang Yu; et al. Scientific Reports 2019. doi:10.1038/s41598-019-54864-x

Other claims from this paper (7)

Association 596

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Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The wheat hybrid showed an improvement in N use efficiency (NUE).

Taxon: wheatTriticum aestivume5
Material: wheat hybride5
Outcome: N use efficiency (NUE)e6
Direction: improvemente6

Verbatim

e5
“The wheat hybrid reached a higher grain yield with fewer N inputs than the conventional genotype”
✓ located verbatim in the source · abstract, characters 1254–1350

e6
“it demonstrated an improvement in N use efficiency (NUE)”
✓ located verbatim in the source · abstract, characters 1356–1412

Title

Field programs for the cultivation of barley and wheat hybrids

Mattia Scapino; Massimo Blandino Italian Journal of Agronomy 2025. doi:10.1016/j.ijagro.2025.100046

Other claims from this paper (14)

Association Barley hybrids yielded 8% more grain than conventional genotypes.
Association Wheat hybrids yielded 10% more grain than conventional genotypes.
Association Barley hybrids had 23% more kernels per ear than conventional genotypes.
Association Wheat hybrids had 22% more kernels per ear than conventional genotypes.
Association Barley hybrids had 3% higher kernel weight than conventional genotypes.
Association Wheat hybrids had 4% higher kernel weight than conventional genotypes.
Mechanism The authors attribute the yield advantage mainly to an improved tillering ability.
Association Hybrids were sown at a 67% lower initial plant density.
Observation The canopy of the hybrids stayed green for longer.
Observation The hybrids improved biomass accumulation, as the authors interpret the longer green canopy.
Intervention effect The wheat hybrid reached a higher grain yield with fewer N inputs than the conventional genotype.
Association The barley hybrid showed a higher yield potential.
Association The barley hybrid showed improved tolerance to foliar diseases.
Recommendation The authors recommend hybrids for a sustainable intensification of cereal cropping systems.

Associationobservedoriginal resultmeasured

Claim · model-written summary

Loam soil gave highest N use efficiency (NUE)

Taxon: winter wheatTriticum aestivumt0
Outcome: N use efficiency (NUE)e0
Direction: higheste0
Setting: loam soile0

Verbatim

e0
“Cultivars grown on loam soil had the highest preand post-anthesis N accumulation (NA) of total plant, leaves, stems and grains, as well as nitrogen remobilization to grain (NR), grain yield and N use efficiency (NUE).”
✓ located verbatim in the source · abstract, characters 1138–1355

t0
“winter wheat”
✓ located verbatim in the source · title, characters 80–92

Title

Research on nitrogen metabolism characteristics and use efficiency in different winter wheat cultivars grown on three soil textures

Xiong Shu Chinese Journal of Plant Ecology 2013

Other claims from this paper (19)

Association GS activity and free amino acids had inverted V patterns with soil-dependent peak timing
Association The peak on sandy soil was 10 days earlier than on loam and clay soils
Observation GS activity and free amino acids were not detected on sandy soil on May 22
Association Loam soil gave highest preand post-anthesis N accumulation (NA) of total plant, leaves, stems and grains
Association Loam soil gave highest nitrogen remobilization to grain (NR)
Association Loam soil gave highest grain yield
Association Sandy soil gave highest N remobilization efficiency (NRE)
Association Sandy soil gave highest contribution of N remobilized to grain nitrogen (NRC)
Association Sandy soil gave highest N harvest index (NHI)
Association Sandy soil gave highest N physiological efficiency (NPE)
Observation NRC on sandy soil was 82.46%-95.84%
Association NR was about seven-fold higher than post-anthesis NA on sandy soil
Observation Post-anthesis NA contribution was 36.6% on loam soil
Observation Post-anthesis NA contribution was 29.2% on clay soil
Association ZM366 was highest for GS activity, free amino acid content on sandy soil
Association ZM366 was highest for grain yield on sandy soil
Association ZM366 was highest for protein content, NUE and NPE on sandy soil
Observation ‘AK58’ was best on loam soil
Observation ‘ZM22’ was best on clay soil

Associationobservedoriginal resultmeasured

Claim · model-written summary

Plant N use efficiency was higher toward the poles.

Taxon: plante1
Outcome: NUEe0
Direction: highere0
Setting: the polese0

Verbatim

e0
“NUE higher towards the poles”
✓ located verbatim in the source · abstract, characters 1161–1189

e1
“plant nitrogen (N) uptake (Nup) and N use efficiency (NUE)”
✓ located verbatim in the source · abstract, characters 141–199

Title

Nitrogen deposition and climate drive plant nitrogen uptake while soil factors drive nitrogen use efficiency in terrestrial ecosystems

Helena Vallicrosa; Katrin Fleischer; Manuel Delgado-Baquerizo; et al. Earth System Dynamics 2025. doi:10.5194/esd-16-1183-2025

Other claims from this paper (12)

Association Plant N uptake was primarily driven by N deposition.
Association Plant N uptake increased in warmer areas.
Association Plant N uptake increased in wetter areas.
Association Nitrogen use efficiency was driven by soil biotic and abiotic factors.
Association Plant nitrogen use efficiency decreased with greater arbuscular mycorrhizal fungal colonization.
Association Plant nitrogen use efficiency increased with soil pH.
Association Plant nitrogen use efficiency increased with soil microbial stocks.
Association Plant N uptake was higher at tropical latitudes.
Association Total soil N stocks did not drive plant nitrogen uptake.
Association Total soil N stocks did not drive plant nitrogen use efficiency.
Method / resource TRENDY models may overestimate tropical plant N uptake by about 100 Tg N yr−1.
Method / resource TRENDY models may triple the standard deviation of plant N uptake at boreal latitudes.

Recommendation 196

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Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors concluded this practice could increase aboveground N accumulation, NUE and yield.

Taxon: maizeZea mayse0
Outcome: aboveground N accumulation, N use efficiency, and yield productione0
Direction: increasee0

Verbatim

e0
“increase aboveground N accumulation, N use efficiency, and yield production of maize”
✓ located verbatim in the source · abstract, characters 2078–2162

Title

Variations in Nitrogen Accumulation and Use Efficiency in Maize Differentiate with Nitrogen and Phosphorus Rates and Contrasting Fertilizer Placement Methodologies

Sharifullah Sharifi; Songmei Shi; Xingshui Dong; et al. Plants 2023. doi:10.3390/plants12223870

Other claims from this paper (10)

Intervention effect Deep band placement increased maize leaf, stem and root N accumulation at four N/P rates.
Intervention effect Deep band placement increased total soil N at four N/P rates.
Intervention effect Deep band did not increase these N measures at the five other listed rates.
Intervention effect N150 and N187 increased maize organ N accumulation over N112 at P60 or P75.
Intervention effect P60 and P75 increased maize leaf and stem N accumulation over P45 at N150.
Intervention effect Deep band increased agronomic N use efficiency at N150P75 and N187P75.
Intervention effect Deep band increased partial factor productivity at N150P75 and N187P75.
Intervention effect Deep band increased N use efficiency at the listed high N/P rates.
Association Maize organ N concentrations correlated positively with their N accumulations or soil N concentrations.
Recommendation Authors concluded deep band placement with four listed rates could improve soil N and root N uptake.

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Fertilizer N use can be very profitable, with high NUE, for smallholder maize production in Uganda.

Taxon: maizeZea mayse1
Outcome: very profitablee1

Verbatim

e1
“Fertilizer N use can be very profitable, with high NUE, for smallholder maize production in Uganda”
✓ located verbatim in the source · abstract, characters 1242–1340

Title

Maize Response to Fertilizer and Nitrogen Use Efficiency in Uganda

Kayuki C. Kaizzi; John Byalebeka; Onesmus Semalulu; et al. Agronomy Journal 2012. doi:10.2134/agronj2011.0181

Other claims from this paper (13)

Intervention effect Maize yield was consistently increased by N application.
Intervention effect Mean maize yield increased by 120% with N application compared with no N applied.
Observation Mean economically optimal N rates (EONRs) were 45 to 24 kg ha −1 N at fertilizer use cost to grain price ratios of 10 to 30.
Intervention effect With N applied, P application increased yield by 0.28 Mg ha −1 on average.
Observation Mean economically optimal P rates (EOPRs) were 9 to 1 kg ha −1 P at cost to grain price ratios of 10 to 50.
Intervention effect Yield was not increased by K application.
Intervention effect Profitability was greater for N application than for P application.
Intervention effect Aboveground biomass N was 46.3 kg/ha with no N and 94.3 kg/ha with 150 kg/ha N applied.
Intervention effect Mean N concentration at the EONR was 1.60 and higher than at N 0.
Intervention effect N harvest index at the EONR was 63.8% and higher than at N 0.
Observation Mean recovery efficiency at the EONR was 66% and declined with increasing N rate.
Observation Mean partial factor productivity at the EONR was 86 kg kg −1 and declined with increasing N rate.
Observation Mean agronomic efficiency at the EONR was 41 kg kg −1 and declined with increasing N rate.

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors conclude that perennial mobile green manures could increase nitrogen use efficiency over traditional green manures.

Taxon: cropst0
Outcome: nitrogen use efficiency (NUE)e1

Verbatim

e0
“We conclude that PMGMs have potential to increase NUE over that of traditional green manures”
✓ located verbatim in the source · abstract, characters 1480–1572

t0
“Supplying nitrogen (N) to crops by incorporating”
✓ located verbatim in the source · abstract, characters 9–57

e1
“nitrogen use efficiency (NUE)”
✓ located verbatim in the source · abstract, characters 326–355

Title

Potential to improve nitrogen use efficiency (NUE) by use of perennial mobile green manures

C. R. Ward; D. R. Chadwick; P. W. Hill Nutrient Cycling in Agroecosystems 2022. doi:10.1007/s10705-022-10253-x

Other claims from this paper (5)

Observation Effectiveness of perennial mobile green manure increased with duration of use.
Intervention effect First-season crop nitrogen uptake after gunnera addition equalled that from 14 kg ammonium nitrate nitrogen per hectare.
Intervention effect After two annual gunnera additions, crop nitrogen uptake rose to a 70 kg ammonium nitrate nitrogen equivalent.
Intervention effect Perennial mobile green manures gave equal or higher crop biomass than clover.
Intervention effect Perennial mobile green manures produced lower soil nitrate than clover.

Mechanism 120

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Mechanismobservedoriginal resultsimulated

Claim · model-written summary

Tradeoffs with nitrogen use efficiency can select against fixation.

Taxon: treese1
Outcome: select against N fixatione0
Qualifier: N use efficiency (NUE)e0

Verbatim

e0
“N use efficiency (NUE) can select against N fixation”
✓ located verbatim in the source · abstract, characters 542–594

t0
“nitrogen fixation”
✓ located verbatim in the source · title, characters 42–59

e1
“Symbiotic nitrogen (N) fixing trees”
✓ located verbatim in the source · abstract, characters 0–35

Title

Evolutionary tradeoffs can select against nitrogen fixation and thereby maintain nitrogen limitation

Duncan N. L. Menge; Simon A. Levin; Lars O. Hedin Proceedings of the National Academy of Sciences 2008. doi:10.1073/pnas.0711411105

Other claims from this paper (7)

Mechanismobservedoriginal resultsimulated

Claim · model-written summary

N application rate determined total N input and affected N uptake and utilization efficiency and NUE.

Taxon: riceOryza sativat0
Treatment: N application ratee0
Outcome: NUEe0
Qualifier: influenced the N uptake and utilization efficiencye0

Verbatim

e0
“The N application rate determined the total N input, influenced the N uptake and utilization efficiency, and therefore the NUE”
✓ located verbatim in the source · abstract, characters 736–862

t0
“rice”
✓ located after whitespace/quote normalisation · title, characters 71–75

Title

The Contributions of Cultivar and Fertilization Improvements to Single Rice Nitrogen Use Efficiency Trends Across China

Xinjie Ju; Xin Liu; Wenjun Jiang; et al. Global Change Biology 2025. doi:10.1111/gcb.70316

Other claims from this paper (9)

Observation National single rice NUE was 0.31 over 1978–2019.
Observation Single rice NUE rose slightly before 2005.
Observation Single rice NUE rose by 0.048 per decade after 2005.
Mechanism Fertilization management and cultivar shifts primarily controlled NUE trends.
Mechanism Cultivar shifts influenced NUE through a higher grain share of photosynthetic products and harvest index.
Observation Cultivar improvement contributed 0.034 per decade to NUE before 2005.
Intervention effect Excess N fertilizer use offset NUE gains by -0.029 per decade before 2005.
Observation Cultivar improvement benefits fell to 0.021 per decade after 2005 and were unstable in many subregions.
Recommendation The authors recommend rice breeding improvements to meet future NUE challenges.

Mechanismauthor interpretationreview summarynegativebasis n/a

Claim · model-written summary

GRV DELLA accumulation reduces nitrogen-use efficiency.

Taxon: semi-dwarf cerealse1
Gene: DELLAse0
Outcome: N-use efficiency (NUE)e0
Direction: reducede0

Verbatim

e0
“GRV DELLAs accumulation confers reduced N-use efficiency (NUE)”
✓ located verbatim in the source · abstract, characters 417–479

e1
“semi-dwarf cereals”
✓ located verbatim in the source · abstract, characters 70–88

Title

Sustainable crop yields from the coordinated modulation of plant growth and nitrogen metabolism

Qian Liu; Kun Wu; Xiangdong Fu; et al. Chinese Science Bulletin (Chinese Version) 2019. doi:10.1360/tb-2019-0043

Other claims from this paper (10)

Observation Semi-dwarf cereal varieties improved grain yield.
Mechanism Rice GRF4 positively regulates nitrogen-responsive growth and assimilation.
Mechanism Rice GRF4 counteracts SLR1 inhibition of nitrogen metabolism.
Mechanism Balanced GRF4 and DELLA activities and interaction regulate plant carbon-to-nitrogen ratio.
Mechanism GRF4 promotes nitrogen assimilation, carbon fixation, and plant growth.
Mechanism DELLA inhibits nitrogen assimilation, carbon fixation, and growth.
Intervention effect Increased GRF4 abundance increases carbon and nitrogen assimilation without losing dwarfism.
Intervention effect Increased GRF4 abundance boosts dwarfism-associated yield gains.
Mechanism Coordinating growth and metabolism elevates nitrogen-use efficiency.
Mechanism Coordinating growth and metabolism elevates yield.

Method / resource 46

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Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

N use efficiency indices NUE, NUpE and NUtE discriminated the manure effects on corn, but NPE and NHI did not.

Taxon: cornZea mays subsp. mayse6
Outcome: distinctions between N supply dynamics of manurese6
Direction: well discriminatede6
Qualifier: N use efficiency (NUE), N uptake efficiency (NUpE), N utilization efficiency (NUtE)e6
Comparator: N physiological efficiency (NPE) and N harvest index (NHI)e6

Verbatim

e6
“The distinctions between N supply dynamics of manures and their influences on yield, grain N removal, and total above-ground plant N uptake of corn were well discriminated by N use efficiency (NUE), N uptake efficiency (NUpE), N utilization efficiency (NUtE), N agronomic efficiency (NAE), and N recovery efficiency (NRE), but not by N physiological efficiency (NPE) and N harvest index (NHI)”
✓ located verbatim in the source · abstract, characters 1018–1410

Title

Agronomic approach to evaluate the nitrogen use efficiency of liquid, solid, and composted swine manures in corn–soybean rotation

Junjie Niu; Tiequan Zhang; Guang Wen; et al. Frontiers in Environmental Science 2023. doi:10.3389/fenvs.2023.1021890

Other claims from this paper (11)

Intervention effect Liquid swine manure gave corn yields comparable to inorganic fertilizer.
Intervention effect Solid swine manure gave inconsistent corn yield across years.
Intervention effect Composted swine manure had minimal agronomical value for corn.
Intervention effect Soybean with inorganic fertilizer had the highest grain yields, 3,468 and 3,761 kg ha −1 in 2005 and 2007.
Observation Gain N removal of corn was comparable between the two alternative years.
Observation Gain N removal of soybeans was comparable between the two alternative years.
Method / resource N agronomic efficiency and N recovery efficiency discriminated the manure effects on corn.
Method / resource N physiological efficiency and N harvest index did not discriminate the manure effects on corn.
Observation Legacy effects from the preceding corn on soybean yield were detected by NAE and NRE.
Intervention effect Inorganic fertilizer performed the best and liquid manure followed in grain yield together with N use efficiency parameters.
Method / resource NUE, NUpE, NUtE, NAE and NRE used for chemical fertilizer N were also applicable to manure N efficiency.

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

The RI-NFOA midseason rate after 67 kg N ha−1 preplant nitrogen achieved 65% NUE.

Taxon: cornZea mays subsp. mayst0
Treatment: 67 kg N ha−1 preplant applicatione0
Outcome: N use efficiency (NUE)e0
Value: 65%e0
Comparator: 134 kg N ha−1 fixed rate split appliede1

Verbatim

e0
“With the 67 kg N ha−1 preplant application, midseason RI-NFOA-based N rates resulted in an N use efficiency (NUE) of 65%”
✓ located verbatim in the source · abstract, characters 600–720

e1
“while the 134 kg N ha−1 fixed rate split applied had 56% NUE”
✓ located verbatim in the source · abstract, characters 721–781

t0
“corn”
✓ located after whitespace/quote normalisation · title, characters 108–112

Title

Adjusting Midseason Nitrogen Rate Using a Sensor-Based Optimization Algorithm to Increase Use Efficiency in Corn

B. S. Tubaña; D. B. Arnall; O. Walsh; et al. Journal of Plant Nutrition 2008. doi:10.1080/01904160802208261

Other claims from this paper (3)

Intervention effect The 134 kg N ha−1 split fixed rate achieved 56% NUE.
Method / resource At 2.32 m2 resolution, RICV-NFOA produced higher NUE.
Method / resource At 2.32 m2 resolution, RICV-NFOA produced higher net returns to N fertilizer.

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

NUE, NUpE, NUtE, NAE and NRE used for chemical fertilizer N were also applicable to manure N efficiency.

Outcome: manure N efficiencye0
Qualifier: NUE, NUpE, NUtE, NAE, and NREe0
Comparator: chemical fertilizer Ne0

Verbatim

e0
“The NUE, NUpE, NUtE, NAE, and NRE parameters used to evaluate chemical fertilizer N were also applicable to evaluate manure N efficiency”
✓ located verbatim in the source · abstract, characters 1611–1747

Title

Agronomic approach to evaluate the nitrogen use efficiency of liquid, solid, and composted swine manures in corn–soybean rotation

Junjie Niu; Tiequan Zhang; Guang Wen; et al. Frontiers in Environmental Science 2023. doi:10.3389/fenvs.2023.1021890

Other claims from this paper (11)

Intervention effect Liquid swine manure gave corn yields comparable to inorganic fertilizer.
Intervention effect Solid swine manure gave inconsistent corn yield across years.
Intervention effect Composted swine manure had minimal agronomical value for corn.
Intervention effect Soybean with inorganic fertilizer had the highest grain yields, 3,468 and 3,761 kg ha −1 in 2005 and 2007.
Observation Gain N removal of corn was comparable between the two alternative years.
Observation Gain N removal of soybeans was comparable between the two alternative years.
Method / resource N use efficiency indices NUE, NUpE and NUtE discriminated the manure effects on corn, but NPE and NHI did not.
Method / resource N agronomic efficiency and N recovery efficiency discriminated the manure effects on corn.
Method / resource N physiological efficiency and N harvest index did not discriminate the manure effects on corn.
Observation Legacy effects from the preceding corn on soybean yield were detected by NAE and NRE.
Intervention effect Inorganic fertilizer performed the best and liquid manure followed in grain yield together with N use efficiency parameters.

“N use efficiency (NUE)”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics

Intervention effect 1449

Observation 598

Association 596

Recommendation 196

Mechanism 120

Method / resource 46