Search claims · PlantClaims

Mechanismauthor interpretationreview summarybasis n/a

Claim · model-written summary

Apparent nitrogen use efficiency may reflect increased nonstructural carbohydrate storage.

Compound: nonstructural carbohydratee0
Outcome: apparent increased efficiency of nitrogen usee0

Not reportedTaxon

Verbatim

e0
“The apparent increased efficiency of nitrogen use may merely be an increase in storage of nonstructural carbohydrate”
✓ located verbatim in the source · abstract, characters 468–584

Title

Anomalous Responses of Plants to CO 2 Enrichment

Craig Loehle Oikos 1995. doi:10.2307/3545906

Other claims from this paper (3)

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Greater nitrogen-use efficiency reduces environmental nitrogen contamination.

Outcome: nitrogen contamination of the environmente0
Direction: reducese0
Qualifier: nitrogene0

Not reportedTaxon

Verbatim

e0
“reduces nitrogen contamination of the environment”
✓ located verbatim in the source · abstract, characters 354–403

Title

Using Soluble Calcium to Stimulate Plant Growth

S. E. Feagley; Lloyd B. Fenn OakTrust (Texas A&M University Libraries) 1998

Other claims from this paper (8)

Intervention effect Soluble calcium with urea can improve crop production.
Intervention effect Calcium increases ammonium absorption.
Intervention effect Calcium increases potassium absorption.
Intervention effect Calcium increases phosphorus absorption.
Intervention effect Calcium stimulates photosynthesis.
Intervention effect Calcium increases the size of sellable plant parts.
Intervention effect Calcium makes nitrogen use more efficient.
Mechanism Greater nitrogen-use efficiency improves production economics.

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

AP175 had the highest nitrogen use efficiency, partly because of lower grain nitrogen accumulation.

Taxon: CornZea mays subsp. mayst0
Material: AP175e0
Outcome: N use efficiencye0
Direction: higheste0
Qualifier: due partly to less accumulation of grain Ne0

Verbatim

e0
“Hybrid AP175, the highest yielding cultivar, had the highest N use efficiency, due partly to less accumulation of grain N (Table ).”
✓ located verbatim in the source · abstract, characters 3630–3761

t0
“Corn”
✓ located verbatim in the source · title, characters 34–38

Title

Responses of Three Early Maturing Corn Hybrids to Nitrogen Fertilizer

W. L. Albus; J. T. Moraghan jpa 1995. doi:10.2134/jpa1995.0581

Other claims from this paper (19)

Intervention effect Nitrogen fertilizer responses averaged 57 bu/acre in the first experiment.
Intervention effect Nitrogen fertilizer responses averaged 45 bu/acre in the second experiment.
Intervention effect Nitrogen by cultivar interactions were not significant for eleven yield and nitrogen characteristics.
Observation AP175 yielded 9 bu/acre more than P3906 in 1989.
Observation AP175 yielded 7 bu/acre more than P3906 in 1990.
Observation AP175 and P3737 grain yields did not differ significantly.
Observation P3906 grain nitrogen concentration exceeded AP175 by 14% in 1989.
Observation P3906 grain nitrogen concentration exceeded P3737 by 9% in 1989.
Observation P3906 grain nitrogen concentration exceeded AP175 by 15% in 1990.
Observation P3906 grain nitrogen concentration exceeded P3737 by 7% in 1990.
Mechanism Hybrid grain nitrogen differences were not entirely due to dilution.
Observation AP175 accumulated 8 Ib/acre less grain nitrogen than P3906 in both years.
Observation AP175 nitrogen use efficiency was relatively constant and averaged 68 in both years.
Observation P3906 nitrogen use efficiency averaged 61 in 1989.
Observation P3906 nitrogen use efficiency averaged 60 in 1990.
Observation The hybrids had similar nitrogen fertilizer requirements despite differing grain nitrogen percentages.
Observation P3737 did not show its Wisconsin yield superiority over P3906 in North Dakota.
Observation P3906 accumulated more grain nitrogen per acre than both other cultivars.
Observation Two-year hybrid means described yield, grain nitrogen, total above-ground nitrogen and nitrogen use efficiency.

Mechanismauthor interpretationoriginal resultpositivemeasured

Claim · model-written summary

Greater nitrogen-use efficiency improves production economics.

Outcome: economics of productione0
Qualifier: improvese0

Not reportedTaxon

Verbatim

e0
“which improves the economics of production”
✓ located verbatim in the source · abstract, characters 307–349

Title

Using Soluble Calcium to Stimulate Plant Growth

S. E. Feagley; Lloyd B. Fenn OakTrust (Texas A&M University Libraries) 1998

Other claims from this paper (8)

Intervention effect Soluble calcium with urea can improve crop production.
Intervention effect Calcium increases ammonium absorption.
Intervention effect Calcium increases potassium absorption.
Intervention effect Calcium increases phosphorus absorption.
Intervention effect Calcium stimulates photosynthesis.
Intervention effect Calcium increases the size of sellable plant parts.
Intervention effect Calcium makes nitrogen use more efficient.
Mechanism Greater nitrogen-use efficiency reduces environmental nitrogen contamination.

Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

Nonuniform canopy leaf nitrogen distribution may enhance peanut radiation use efficiency.

Taxon: peanutsArachis hypogaeae0
Outcome: RUEe0
Direction: enhancede0
Qualifier: nonuniform SLN distributione0

Verbatim

e0
“RUE of peanuts may be enhanced by a nonuniform SLN distribution within its leaf canopy”
✓ located verbatim in the source · abstract, characters 1060–1146

Title

Leaf Nitrogen Content, Photosynthesis and Radiation Use Efficiency in Peanut1

T. R. Sinclair; J. M. Bennett; K. J. Boote Peanut Science 1993. doi:10.3146/i0095-3679-20-1-11

Other claims from this paper (5)

Mechanismobservedoriginal resultpositivesimulated

Claim · model-written summary

Elevated carbon dioxide can increase forest productivity even under nitrogen limitation through greater nitrogen acquisition and use efficiency.

Taxon: Temperate forestt0
Treatment: Elevated [CO 2 ]e0
Outcome: forest productivitye0
Direction: increasee0
Qualifier: increased N acquisition and use efficiencye0

Verbatim

t0
“Temperate forest”
✓ located verbatim in the source · title, characters 0–16

e0
“Elevated [CO 2 ] can increase forest productivity even in N‐limiting conditions owing to increased N acquisition and use efficiency.”
✓ located verbatim in the source · abstract, characters 1362–1494

Title

Temperate forest responses to carbon dioxide, temperature and nitrogen: a model analysis

J. H. M. THORNLEY; M. G. R. CANNELL Plant Cell & Environment 1996. doi:10.1111/j.1365-3040.1996.tb00012.x

Other claims from this paper (11)

Intervention effect Temperature increases above 3°C alone may cause water stress and forest decline.
Intervention effect Elevated carbon dioxide can protect trees from temperature-related water stress.
Intervention effect Under nitrogen limitation, elevated carbon dioxide can increase root allocation.
Intervention effect Under nitrogen limitation, elevated carbon dioxide causes little increase in leaf area.
Intervention effect Under nitrogen-rich conditions, elevated carbon dioxide may not increase root allocation.
Intervention effect Under nitrogen-rich conditions, elevated carbon dioxide generally increases leaf area.
Intervention effect Elevated carbon dioxide can decrease forest water use when nitrogen is limited.
Intervention effect Elevated carbon dioxide can increase forest water use under nitrogen-rich conditions.
Intervention effect Combined rising temperature and carbon dioxide may raise or lower productivity depending on nitrogen and water stress.
Intervention effect Elevated carbon dioxide and temperature can raise or lower gaseous soil nitrogen losses.
Intervention effect Under the IS92a scenario, carbon dioxide and temperature increases likely increase net ecosystem productivity and carbon sequestration.

Mechanismobservedoriginal resultpositivesimulated

Claim · model-written summary

A nonuniform specific leaf nitrogen distribution theoretically enhanced soybean radiation-use efficiency.

Taxon: SoybeanGlycine maxt0
Outcome: RUEe0
Direction: enhancee0
Qualifier: nonuniform specific leaf N distributione0

Verbatim

e0
“a nonuniform specific leaf N distribution (SLN, g N m −2 ) was shown theoretically to enhance RUE”
✓ located verbatim in the source · abstract, characters 754–851

t0
“Soybean Radiation‐Use Efficiency”
✓ located verbatim in the source · title, characters 0–32

Title

Soybean Radiation‐Use Efficiency as Influenced by Nonuniform Specific Leaf Nitrogen Distribution and Diffuse Radiation

Thomas R. Sinclair; Tatsuhiko Shiraiwa Crop Science 1993. doi:10.2135/cropsci1993.0011183x003300040036x

Other claims from this paper (2)

Mechanismobservedoriginal resultpositivemeasured

Claim · model-written summary

Added nitrogen increased water use efficiency of dry matter production through dry matter responses rather than water use.

Taxon: winter wheatTriticum aestivumt0
Treatment: added Ne0
Outcome: water-use efficiency of DM productione0
Direction: Increasese0
Qualifier: a reflection of DM responses and not water usee0

Verbatim

t0
“winter wheat”
✓ located verbatim in the source · title, characters 20–32

e0
“Increases in water-use efficiency of DM production with added N were a reflection of DM responses and not water use”
✓ located verbatim in the source · abstract, characters 1377–1492

Title

Response of no-till winter wheat to nitrogen fertilization and drought stress

A. M. Johnston; D. B. Fowler Canadian Journal of Plant Science 1992. doi:10.4141/cjps92-134

Other claims from this paper (16)

Intervention effect Nitrogen fertilization increased leaf area index in 1987.
Intervention effect Nitrogen fertilization increased leaf conductance in 1987.
Intervention effect Nitrogen fertilization increased dry matter yield at anthesis and harvest in 1987.
Association High air temperatures hastened crop development in 1988.
Observation In 1988 the early season leaf area and tiller responses to nitrogen ended abruptly.
Observation Rapid senescence occurred before anthesis in 1988.
Observation Mean harvest dry matter accumulated by anthesis was 43% in 1987.
Observation Mean harvest dry matter accumulated by anthesis was 78% in 1988.
Intervention effect Early nitrogen application maintained greater leaf area than late application in three of eight trials.
Observation The early nitrogen effect on tillers was lost before anthesis under environmental stress.
Observation Most soil water extraction occurred before anthesis.
Observation Rainfall supplied on average 98% of evapotranspiration after anthesis.
Association Maximum evapotranspiration was associated with high rainfall.
Intervention effect Fertilizer nitrogen increased plant stress during grain filling.
Intervention effect Fertilizer nitrogen reduced leaf conductance during grain filling.
Recommendation The authors recommend early correction of nitrogen deficiency to use rainfall and stored water efficiently.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Crop nitrogen-use efficiency was low because crop demand and nitrogen supply from prunings were poorly synchronized.

Taxon: crope0
Outcome: Low N use efficiencye0
Qualifier: lack of synchronization between crop N demand and the N supply of pruningse0

Verbatim

e0
“Low N use efficiency by crop due to lack of synchronization between crop N demand and the N supply of prunings”
✓ located verbatim in the source · abstract, characters 1192–1302

Title

Increasing biological N2 fixation and its contribution to the N cycle in alley cropping

Sanginga, N.; Mulongoy , K. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) 1995

Other claims from this paper (11)

Mechanismobservedoriginal resultmeasured

Claim · model-written summary

The difference in NAR between the two weed species was driven by nitrogen use efficiency, not by leaf nitrogen content.

Taxon: digitaria adscendensDigitaria adscendense0
Outcome: NARe2
Qualifier: nitrogen use efficiencye2

Verbatim

e0
“The growth of digitaria adscendens and eleusine indica, annual weeds common in japan, was experimentally analyzed under varying untrient conditions”
✓ located verbatim in the source · abstract, characters 0–147

e2
“The different of NAR in the two species was induced not by leaf nitrogen content but by nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 393–504

Title

The effect of dry matter allocation at the early seedling stare on the growth of two grass species

Young Mok Park The Korean Journal of Ecology 1992

Other claims from this paper (8)

“nitrogen use efficiency”

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