Search claims · PlantClaims

Observationobservedoriginal resultmixedsignificant (as stated)measured

Claim · model-written summary

Rice genotypes differed significantly in 12 nitrogen use efficiency, yield and related traits.

Taxon: riceOryza sativat0
Material: genotypese1
Outcome: 12 quantitative traits of nitrogen use efficiency, grain yield, and its related traitse0

Not reportedDirection

Verbatim

e0
“The presence of significant genotypic differences was registered for 12 quantitative traits of nitrogen use efficiency, grain yield, and its related traits.”
✓ located verbatim in the source · abstract, characters 276–432

e1
“We assessed genetic diversity in 26 rice genotypes”
✓ located verbatim in the source · abstract, characters 0–50

t0
“Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency”
✓ located verbatim in the source · title, characters 0–77

Title

Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency

SHANTANU DAS; PRAKASH BORAH; DEBOJIT SARMA; et al. The Indian Journal of Agricultural Sciences 2021. doi:10.56093/ijas.v91i6.114302

Other claims from this paper (5)

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

N apparent use efficiency and N physiological use efficiency first increased and then decreased with increasing N rate.

Taxon: Spring MaizeZea mayst0
Outcome: N apparent use efficiency and N physiological useefficiencye0
Direction: first increased and then decreasede0

Not reportedTreatmentComparator

Verbatim

t0
“Spring Maize”
✓ located verbatim in the source · title, characters 12–24

e0
“N apparent use efficiency and N physiological useefficiency both first increased and then decreased”
✓ located verbatim in the source · abstract, characters 649–748

Title

Response of Spring Maize Grain Yield, Nitrogen Efficiency and Soil Mineral Nitrogen to Nitrogen Application

JUAN Ying-hua; WANG Ren; HAN Xiao-ri; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2014. doi:10.13254/j.jare.2013.0241

Other claims from this paper (9)

Intervention effect Spring maize yield increased significantly as N application rate increased.
Intervention effect Once the N rate exceeded 180 kg/ha, spring maize yield stayed stable or tended to decline.
Intervention effect N agronomic use efficiency, N uptake efficiency and N partial productivity decreased significantly with increasing N rate.
Intervention effect N harvest index decreased significantly with increasing N rate.
Observation Soil NO3-N content decreased in a wave manner with increasing soil depth.
Intervention effect At 240 and 300 kg/ha N, NO3-N content in the 60-100 cm soil layer was significantly higher than under the other N treatments.
Intervention effect NO3-N accumulation in the 0-120 cm soil layer increased significantly with increasing N rate.
Observation Above 240 kg/ha N, accumulated NO3-N in the soil layer carried a high leaching risk.
Recommendation The reasonable N application rate for spring maize under the experimental conditions is 179-209 kg N/ha.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Under 60 % soil wetting, nitrogen use efficiency and uptake rose and then fell as nitrogen rates increased.

Taxon: sweet potatoIpomoea batatase0
Treatment: increasing nitrogen application ratese0
Outcome: Nitrogen use efficiency, sweet potato nitrogen uptake amounte0
Direction: initially increased and then decreasede0
Qualifier: soil wetted percentage of 60 %e0

Not reportedComparator

Verbatim

e0
“Nitrogen use efficiency, sweet potato nitrogen uptake amount, and nitrogen use efficiency initially increased and then decreased with increasing nitrogen application rates in soil wetted percentage of 60 % treatment.”
✓ located verbatim in the source · abstract, characters 1989–2205

Title

Optimizing nitrogen and irrigation application for drip irrigated sweet potato with plastic film mulching in eastern China

Youliang Zhang; Yongqi Tang; Zhaohui Wang; et al. Agricultural Water Management 2024. doi:10.1016/j.agwat.2024.108997

Other claims from this paper (9)

Intervention effect The 180 kg hm −2 nitrogen treatment had lower soil water content than the 90 and 270 kg hm −2 treatments.
Intervention effect Increasing nitrogen application increased soil nitrogen content and residue at 0–40 cm.
Intervention effect The 180 kg hm −2 treatment had significantly lower soil nitrate-N residue than the 270 kg hm −2 treatment.
Intervention effect Sweet potato growth, tuber dry matter, large and medium tuber number and weight, and yield rose and then fell as nitrogen rates increased.
Intervention effect At 60 % soil wetting, tuber yield was higher with 180 kg hm −2 nitrogen than with 90 or 270 kg hm −2.
Intervention effect Moderate nitrogen improved tuber crude protein, starch, and soluble sugar content.
Intervention effect Irrigation increased nitrogen uptake efficiency and nitrogen use efficiency.
Intervention effect At 180 kg hm −2 nitrogen, 30 % and 60 % soil wetting had higher nitrogen use efficiency than no irrigation.
Recommendation The authors identify 180 kg/hm 2 nitrogen with 60 % soil wetting as suitable for local sweet potato cultivation.

Intervention effectobservedreview summarymixedbasis n/a

Claim · model-written summary

Variable and uniform nitrogen rates show no consistent advantage in yield, profit, nitrogen use or nitrogen use efficiency.

Taxon: plantsViridiplantaee0
Treatment: variable‐rate N managemente0
Outcome: yields achieved, profitability, whole‐field N usage, or N‐use efficiencye0
Direction: no consistent advantagese0
Comparator: uniform‐e0

Verbatim

e0
“Side‐by‐side comparisons of uniform‐ and variable‐rate N management have revealed no consistent advantages for either strategy in yields achieved, profitability, whole‐field N usage, or N‐use efficiency by plants.”
✓ located verbatim in the source · abstract, characters 455–668

Title

Variable‐Rate Nitrogen Management Creates Opportunities and Challenges for Corn Producers

Thomas A. Doerge Crop Management 2002. doi:10.1094/cm-2002-0905-01-rs

Other claims from this paper (2)

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Xinong 979 had relatively high yield and quality but low nitrogen use efficiency across nitrogen conditions.

Taxon: wheatTriticum aestivumt0
Material: Xinong 979e0
Outcome: relatively high yield and quality but low N use efficiencye0

Verbatim

e0
“Under the two N application conditions,Xinong 979 showed relatively high yield and quality but low N use efficiency”
✓ located verbatim in the source · abstract, characters 514–629

t0
“Wheat”
✓ located verbatim in the source · title, characters 24–29

Title

Response of High-Gluten Wheat to Nitrogen in Sandy Loam Soil

Zhang Shen-ju Hubei nongye kexue 2012

Other claims from this paper (9)

Observation Zhengmai 9023 and Yumai 68 showed high yield, quality and nitrogen use efficiency with or without fertilizer.
Intervention effect Nitrogen fertilizer improved quality and grain protein content in Zhengmai 9023 and Yumai 68.
Intervention effect Nitrogen application further decreased nitrogen use efficiency in Xinong 979.
Observation Wan 38 had low nitrogen use efficiency.
Intervention effect Nitrogen application decreased nitrogen harvest index and use efficiency in Wan 38.
Intervention effect Nitrogen application significantly improved grain quality in Wan 38.
Observation Yumai 34 had middle-range yield, quality and nitrogen use efficiency.
Intervention effect Nitrogen application significantly increased grain yield in Yumai 34.
Intervention effect Nitrogen application did not significantly improve quality in Yumai 34.

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Apparent nitrogen recovery efficiency initially rose then fell.

Outcome: apparent nitrogen recovery efficiente0
Direction: raised first and then dropped downe0

Not reportedTaxon

Verbatim

e0
“The agronomic nitrogen use efficiency,apparent nitrogen recovery efficient,physiological nitrogen use efficiency were raised first and then dropped down”
✓ located verbatim in the source · abstract, characters 685–837

Title

Effects of different nitrogen on dry matter accumulation and nitrogen use efficiency of oriental tobacco

Zhan Jun Turang feiliao 2011

Other claims from this paper (12)

Association Dry matter of organs and whole plants increased with nitrogen fertilizer.
Association Accumulation intensity initially rose and then fell with nitrogen.
Observation Dry matter allocation among organs differed through the growing season.
Association Yield increased with nitrogen fertilizer.
Observation Economic characters increased.
Observation Production rate was 80.43% to 140.23%.
Observation Value rate was 66.90% to 116.20%.
Observation Nitrogen harvest index increased.
Observation Agronomic nitrogen use efficiency initially rose then fell.
Observation Physiological nitrogen use efficiency initially rose then fell.
Observation Partial factor productivity for applied nitrogen declined significantly.
Observation Soil nitrogen dependence rate declined significantly.

Associationauthor interpretationoriginal resultmixedmeasured

Claim · model-written summary

Nitrogen use efficiency in wheat can be substantially reduced or increased depending on the condition of the cultivation year.

Taxon: wheatTriticum aestivume2
Outcome: Nitrogen use efficiencye2
Direction: reduced or increasede2
Setting: condition of the year of cultivatione2

Verbatim

e2
“Nitrogen use efficiency can be substantially reduced or increased in wheat based on the condition of the year of cultivation”
✓ located verbatim in the source · abstract, characters 1022–1146

Title

Wheat yield obtained from nitrogen dose and fractionation

Paula Brezolin Ana; Antonio Gonzalez da Silvae Jose; Roos-Frantz Fabricia; et al. African Journal of Agricultural Research 2017. doi:10.5897/ajar2016.11929

Other claims from this paper (2)

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Residue removal did not consistently affect nitrogen-use efficiency.

Taxon: CornZea mays subsp. mayst0
Treatment: Residue Harvestt0
Outcome: Agronomic efficiency of applied N usee0
Direction: not consistently affectede0

Not reportedComparator

Verbatim

e0
“Agronomic efficiency of applied N use was not consistently affected.”
✓ located verbatim in the source · abstract, characters 886–954

t0
“Residue Harvest Effects on Irrigated, No‐Till Corn”
✓ located verbatim in the source · title, characters 0–50

Title

Residue Harvest Effects on Irrigated, No‐Till Corn Yield and Nitrogen Response

Charles S. Wortmann; Charles A. Shapiro; Marty R. Schmer Agronomy Journal 2015. doi:10.2134/agronj2015.0361

Other claims from this paper (7)

Intervention effect Residue removal raised biomass nitrogen content 22%.
Intervention effect Residue removal raised applied nitrogen recovery efficiency 43%.
Intervention effect Residue removal raised grain yield 20%.
Observation Effects were often greater in year three than year two.
Intervention effect Residue removal effects on optimal nitrogen rate varied among site-years.
Intervention effect Mean optimal nitrogen rate fell by 10–20 kg ha−1.
Recommendation Nitrogen requirement reduction cannot be predicted reliably before planting.

Associationobservedoriginal resultmixedsignificant (as stated)measured

Claim · model-written summary

Nitrogen timing and irrigation frequency interacted significantly for grain yield and water use efficiency.

Taxon: WheatTriticum aestivumt0
Treatment: nitrogen timing and irrigation frequencye0
Outcome: grain yield and water use efficiencye0

Not reportedDirection

Verbatim

t0
“Wheat”
✓ located after whitespace/quote normalisation · title, characters 90–95

e0
“both grain yield and water use efficiency were significantly affected by an interaction between nitrogen timing and irrigation frequency”
✓ located verbatim in the source · abstract, characters 640–776

Title

The effect of seeding rate, timing of nitrogen application and frequency of irrigation on wheat growth, yield and water use

A. A. Nel; F. J. Dijkhuis South African Journal of Plant and Soil 1990. doi:10.1080/02571862.1990.10634560

Other claims from this paper (4)

Intervention effect Seeding rate did not affect wheat grain yield or water use.
Intervention effect With early N, low frequency irrigation increased grain yield by 23% over high frequency irrigation.
Intervention effect With early N, low frequency irrigation increased water use efficiency by 42%.
Intervention effect Under four N instalments irrigation frequency had no effect on grain yield or water use efficiency.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

N apparent use efficiency and N physiological use efficiency first increased and then decreased with N rate.

Taxon: spring maizeZea mayse1
Treatment: N application ratee1
Outcome: N apparent use efficiency and N physiological use efficiencye5
Direction: first increased and then decreasede5

Not reportedComparator

Verbatim

e1
“The results showed that the yield of spring maize increased significantly with N application rate increasing”
✓ located verbatim in the source · abstract, characters 281–389

e5
“N apparent use efficiency and N physiological use efficiency both first increased and then decreased”
✓ located verbatim in the source · abstract, characters 652–752

Title

Response of Spring Maize Grain Yield, Nitrogen Efficiency and Soil Mineral Nitrogen to Nitrogen Application

Juan Ying-hu Nongye ziyuan yu huanjing xuebao 2014

Other claims from this paper (11)

Intervention effect Spring maize yield increased significantly with increasing N application rate.
Intervention effect Above 180 kg·hm-2 N, spring maize yield stayed stable or tended to decline.
Intervention effect N agronomic use efficiency, N uptake efficiency and N partial productivity decreased significantly with increasing N rate.
Intervention effect N harvest index decreased significantly with increasing N rate.
Observation Soil NO3--N content in 0~60 cm showed an increase-decrease-increase-decrease trend, then stabilised, over the season of spring maize.
Observation Under N treatment, soil NO3--N content in 60~120 cm showed a trend of increase at the late growing stage.
Observation Soil NO3--N content decreased in a wave manner with increasing soil depth.
Intervention effect At 240 and 300 kg·hm-2 N, soil NO3--N content in 60~100 cm was significantly higher than under other N rates.
Intervention effect NO3--N accumulation in 0~120 cm soil layer increased significantly with increasing N rate.
Intervention effect Above 240 kg·hm-2 N, accumulated soil NO3--N had a high leaching risk.
Recommendation 179 to 209 kg N·hm-2 is the reasonable N application rate for spring maize under the experimental conditions.

“nitrogen use efficiency”

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