Search claims · PlantClaims

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.

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 resultnegativemeasured

Claim · model-written summary

Whole plant nitrogen use efficiency was low in wheat cultivars with high whole plant water use efficiency.

Taxon: Triticum aestivumTriticum aestivume0
Material: cultivarse5
Outcome: whole plant nitrogen use efficiencye5
Direction: was lowe5

Verbatim

e0
“For this purpose we used two Triticum aestivum cultivars, differing in whole plant water use efficiency”
✓ located verbatim in the source · abstract, characters 345–448

e5
“We conclude that whole plant nitrogen use efficiency was low for the cultivars with a high plant water use efficiency”
✓ located verbatim in the source · abstract, characters 1446–1563

Title

Association of water use efficiency and nitrogen use efficiency with photosynthetic characteristics of two wheat cultivars

Riki van den Boogaard; Svetla Kostadinova; Erik Veneklaas; et al. Journal of Experimental Botany 1995. doi:10.1093/jxb/46.special_issue.1429

Other claims from this paper (5)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen use efficiency declined as fertilizer nitrogen rate increased.

Taxon: upland cottont0
Treatment: NFRe0
Outcome: N use efficiency (NUE)e0
Direction: reducede0

Verbatim

e0
“The N use efficiency (NUE) values were reduced as NFR increased”
✓ located verbatim in the source · abstract, characters 922–985

t0
“upland cotton”
✓ located after whitespace/quote normalisation · title, characters 42–55

Title

Fertilizer Nitrogen Recovery in Irrigated Upland Cotton

J. C. Navarro; J. C. Silvertooth; A. Galadima UA Campus Repository (The University of Arizona) 1997

Other claims from this paper (7)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen use efficiency decreased as nitrogen level increased.

Treatment: increasing levels of nitrogene0
Outcome: nitrogen use efficiencye0
Direction: decreasede0

Not reportedTaxon

Verbatim

e0
“The nitrogen use efficiency decreased with increasing levels of nitrogen”
✓ located verbatim in the source · abstract, characters 452–524

Title

Response of palmarosa (Cymbopogon martinii (Roxb). Wats. var. motia Burk.) to plant spacings and nitrogen fertilizer application.

B. R. Rajeswara Rao; Kailash Singh; Pran N. Kaul; et al. International journal of tropical agriculture 1990

Other claims from this paper (5)

Intervention effect Biomass and essential oil production, NPK uptake and profit were maximal at 30x30 cm spacing, statistically comparable to 45 x 30 cm.
Intervention effect Applying 160kg N/ha per year gave the highest biomass and essential oil production.
Intervention effect Applying 160kg N/ha per year increased net profit and NPK uptake.
Association The crop response to nitrogen was quadratic.
Observation Apparent nitrogen recovery was reported as low, below the damaged OCR value.

Observationobservedoriginal resultmeasured

Claim · model-written summary

C. diandra had the lowest nitrogen use efficiency among the three Carex species.

Taxon: C. diandraCarex diandrae7
Outcome: nitrogen use efficiencye7
Direction: loweste7

Verbatim

e7
“the species with the lowest maximum growth rate (C. diandra) had the lowest nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 1208–1307

Title

Nitrogen Use Efficiency of Carex Species in Relation to Nitrogen Supply

Rien Aerts; Hannie de Caluwe Ecology 1994. doi:10.2307/1940890

Other claims from this paper (10)

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen level, defoliation interval and their interaction influenced dry matter production, nitrogen-use efficiency, dry matter content and water-use efficiency.

Taxon: ryegrass (Lolium multiflorum,)Lolium multiflorume0
Treatment: nitrogen level, defoliation intervale1
Outcome: dry matter production, nitrogen‐use efficiency (NUE), plant DM contente1

Not reportedDirection

Verbatim

e0
“ryegrass (Lolium multiflorum,)”
✓ located verbatim in the source · abstract, characters 236–266

e1
“The dry matter production, nitrogen‐use efficiency (NUE), plant DM content and water‐use efficiency were influenced (P<0.01) by nitrogen level, defoliation interval, and the interaction between these factors.”
✓ located verbatim in the source · abstract, characters 543–751

Title

The influence of nitrogen and defoliation on production and water‐use efficiency ofLolium multiflorumcv. Midmar

J.F. Theron; W.L.J. van Rensburg African Journal of Range and Forage Science 1998. doi:10.1080/10220119.1998.9647938

Other claims from this paper (7)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Parasite foliar nitrogen was inversely related to photosynthetic nitrogen use efficiency.

Taxon: Rhinanthus minorRhinanthus minort0
Outcome: photosynthetic nitrogen use efficiencye0
Direction: inversely relatede0

Not reportedOrgan / stage

Verbatim

e0
“and inversely related to photosynthetic nitrogen use efficiency”
✓ located verbatim in the source · abstract, characters 683–746

t0
“Rhinanthus minor”
✓ located verbatim in the source · title, characters 78–94

Title

Growth, gas exchange and water use efficiency of the facultative hemiparasite Rhinanthus minor associated with hosts differing in foliar nitrogen concentration

W. E. Seel; R. E. Cooper; M. C. Press Physiologia Plantarum 1993. doi:10.1111/j.1399-3054.1993.tb01787.x

Other claims from this paper (7)

Observation R. minor on Trifolium pratense grew over tenfold taller than unattached plants.
Observation Performance on grasses and non-legume dicot hosts was intermediate.
Observation Light saturated photosynthesis varied across hosts from 1. 5 to 22. 5 μmol g −1 dry weight min −1.
Association Photosynthesis was positively correlated with growth.
Observation Parasite foliar nitrogen exceeded host foliar nitrogen.
Association Parasite foliar nitrogen was positively related to photosynthesis.
Association Leaf nitrogen and water use efficiency were unrelated.

“nitrogen use efficiency”

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