Search claims · PlantClaims

Associationobservedoriginal resultmeasured

Claim · model-written summary

Soil nitrogen and fertilization controlled spring total nitrogen uptake.

Taxon: OrchardgrassDactylis glomeratat0
Treatment: N fertilizatione0
Outcome: Spring total N uptake ratest1

Not reportedDirection

Verbatim

e0
“were controlled by soil N levels and N fertilization”
✓ located verbatim in the source · abstract, characters 1516–1568

t0
“Orchardgrass”
✓ located verbatim in the source · title, characters 77–89

t1
“Spring total N uptake rates”
✓ located verbatim in the source · abstract, characters 1442–1469

Title

Influences of Soil Environment on Biomass and Nitrogen Accumulation Rates of Orchardgrass

W.L. Stout; G.A. Jung Agronomy Journal 1992. doi:10.2134/agronj1992.00021962008400060021x

Other claims from this paper (8)

Observation Spring biomass accumulated at 60.0 to 112.0 kg ha −1 day −1.
Association Soil nitrogen, fertilization and temperature controlled spring biomass accumulation.
Association Fertilization alone controlled fall biomass accumulation.
Observation Spring fertilizer nitrogen accumulated at 0.078 to 0.72 kg ha −1 day −1.
Association Fertilization largely controlled spring fertilizer nitrogen accumulation.
Observation Spring total nitrogen uptake ranged from 0.461 to 2.20 kg ha −1 day −1.
Observation Spring fertilizer nitrogen recovery was about 42%.
Observation Fall fertilizer nitrogen recovery was about 15%.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Grain and straw yield response and total N uptake were almost identical across previous N rates for spring barley.

Taxon: spring barleyHordeum vulgaree0
Treatment: previous N ratee0
Outcome: Grain and straw yield response and total N uptakee0
Direction: almost identicale0

Not reportedComparator

Verbatim

e0
“Grain and straw yield response and total N uptake for spring barley, winter barley and oats, were almost identical irrespective of the previous N rate.”
✓ located verbatim in the source · abstract, characters 1036–1187

Title

Long continued applications of N fertilizer to cereals on sandy loam: grain and straw response to residual N

I.K. Thomsen; J. Djurhuus; B.T. Christensen Soil Use and Management 2003. doi:10.1111/j.1475-2743.2003.tb00280.x

Other claims from this paper (13)

Intervention effect Winter wheat with prior high N fertilization had more grain than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had more straw than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had higher total N uptake than with normal or reduced prior N.
Intervention effect Test-year N supply did not significantly affect winter wheat grain yield response.
Intervention effect Test-year N supply did not significantly affect winter wheat N uptake.
Intervention effect Prior N supply did not affect winter wheat in the second test year.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for winter barley.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for oats.
Intervention effect Soil soil C did not differ significantly among three long-term N fertilizer rates.
Intervention effect Soil N did not differ significantly among three long-term N fertilizer rates.
Intervention effect Oat plots with differing fertilizer history showed no significant difference in soil N mineralizing capacity.
Observation Overall N loss was lower by 189 to 466 kg N ha−1 at normal and high N rates than at the reduced rate.
Intervention effect Authors conclude fertilizer residues did not significantly affect soil N supply capacity or organic matter under continuous cereals.

Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Increasing nitrogen rates significantly improved the maximum nitrogen absorption rate and total uptake.

Taxon: maizeZea mayst0
Treatment: increasing N application ratese0
Outcome: maximum N absorption rate and total N uptakee0
Direction: improvede0

Verbatim

e0
“The maximum N absorption rate and total N uptake were significantly improved with the increasing N application rates”
✓ located verbatim in the source · abstract, characters 467–583

t0
“spring maize”
✓ located verbatim in the source · title, characters 66–78

Title

Effect of N application on nitrogen absorption and utilization of spring maize under different soil fertilities

Jiyun Jin Plant Nutrition and Fertilizing Science 2011

Other claims from this paper (10)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Spring total nitrogen uptake ranged from 0.461 to 2.20 kg ha −1 day −1.

Taxon: OrchardgrassDactylis glomeratat0
Outcome: Spring total N uptake ratese0
Value: 0.461 to 2.20 kg ha −1 day −1e0

Verbatim

e0
“Spring total N uptake rates ranged from 0.461 to 2.20 kg ha −1 day −1”
✓ located verbatim in the source · abstract, characters 1442–1511

t0
“Orchardgrass”
✓ located verbatim in the source · title, characters 77–89

Title

Influences of Soil Environment on Biomass and Nitrogen Accumulation Rates of Orchardgrass

W.L. Stout; G.A. Jung Agronomy Journal 1992. doi:10.2134/agronj1992.00021962008400060021x

Other claims from this paper (8)

Observation Spring biomass accumulated at 60.0 to 112.0 kg ha −1 day −1.
Association Soil nitrogen, fertilization and temperature controlled spring biomass accumulation.
Association Fertilization alone controlled fall biomass accumulation.
Observation Spring fertilizer nitrogen accumulated at 0.078 to 0.72 kg ha −1 day −1.
Association Fertilization largely controlled spring fertilizer nitrogen accumulation.
Association Soil nitrogen and fertilization controlled spring total nitrogen uptake.
Observation Spring fertilizer nitrogen recovery was about 42%.
Observation Fall fertilizer nitrogen recovery was about 15%.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Total wheat nitrogen uptake rose in proportion to nitrogen fertilizer rate.

Treatment: N ratese0
Outcome: total N uptakee0
Direction: increasede0

Not reportedTaxonComparator

Verbatim

e0
“total N uptake increased proportionally to N rates”
✓ located verbatim in the source · abstract, characters 832–882

Title

Spring Wheat Yield and Quality Related to Soil Texture and Nitrogen Fertilization

Judith Nyiraneza; Athyna N. Cambouris; Noura Ziadi; et al. Agronomy Journal 2012. doi:10.2134/agronj2011.0342

Other claims from this paper (11)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Drag-shoe manure produced 15 to 20 kg ha −1 greater N uptake than splash-plate manure at high N rates in spring and summer.

Taxon: tall fescueLolium arundinaceume1
Treatment: drag‐shoee0
Outcome: Total N uptakee0
Direction: greatere0
Value: 15 to 20 kg ha −1e0
Qualifier: high N application rate in spring and summere0
Comparator: splash‐plate applied manuree0

Verbatim

e0
“Total N uptake was 15 to 20 kg ha −1 greater from drag‐shoe than from splash‐plate applied manure at high N application rate in spring and summer”
✓ located verbatim in the source · abstract, characters 1246–1391

e1
“tall fescue ( Festuca arundinacea Schreb.)”
✓ located verbatim in the source · abstract, characters 159–201

Title

Surface‐Banded and Broadcast Dairy Manure Effects on Tall Fescue Yield and Nitrogen Uptake

Shabtai Bittman; C. Grant Kowalenko; Derek E. Hunt; et al. Agronomy Journal 1999. doi:10.2134/agronj1999.915826x

Other claims from this paper (10)

Intervention effect Drag-shoe banded manure gave yield response similar to mineral fertilizer at equivalent N rates.
Intervention effect Splash-plate manure yielded 0.5 to 1.0 Mg ha −1 less than fertilizer in summer and spring.
Intervention effect Splash-plate manure and fertilizer had similar yield response in autumn.
Observation Autumn differences in total N uptake were smaller.
Observation Treatment differences in total N concentration were small.
Intervention effect In summer, drag-shoe application increased apparent manure N recovery by 20 to 30% over splash-plate application.
Intervention effect Early spring application increased apparent N recovery by 18%.
Intervention effect Delaying manure application had little yield effect.
Intervention effect Delayed manure application increased tissue N in some summer and autumn treatments.
Intervention effect Nitrate concentrations under manure were similar to or below fertilizer treatments.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Grain and straw yield response and total N uptake were almost identical across previous N rates for oats.

Taxon: oatsAvena sativae0
Treatment: previous N ratee0
Outcome: Grain and straw yield response and total N uptakee0
Direction: almost identicale0

Not reportedComparator

Verbatim

e0
“Grain and straw yield response and total N uptake for spring barley, winter barley and oats, were almost identical irrespective of the previous N rate.”
✓ located verbatim in the source · abstract, characters 1036–1187

Title

Long continued applications of N fertilizer to cereals on sandy loam: grain and straw response to residual N

I.K. Thomsen; J. Djurhuus; B.T. Christensen Soil Use and Management 2003. doi:10.1111/j.1475-2743.2003.tb00280.x

Other claims from this paper (13)

Intervention effect Winter wheat with prior high N fertilization had more grain than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had more straw than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had higher total N uptake than with normal or reduced prior N.
Intervention effect Test-year N supply did not significantly affect winter wheat grain yield response.
Intervention effect Test-year N supply did not significantly affect winter wheat N uptake.
Intervention effect Prior N supply did not affect winter wheat in the second test year.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for spring barley.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for winter barley.
Intervention effect Soil soil C did not differ significantly among three long-term N fertilizer rates.
Intervention effect Soil N did not differ significantly among three long-term N fertilizer rates.
Intervention effect Oat plots with differing fertilizer history showed no significant difference in soil N mineralizing capacity.
Observation Overall N loss was lower by 189 to 466 kg N ha−1 at normal and high N rates than at the reduced rate.
Intervention effect Authors conclude fertilizer residues did not significantly affect soil N supply capacity or organic matter under continuous cereals.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Grain and straw yield response and total N uptake were almost identical across previous N rates for winter barley.

Taxon: winter barleyHordeum vulgaree0
Treatment: previous N ratee0
Outcome: Grain and straw yield response and total N uptakee0
Direction: almost identicale0

Not reportedComparator

Verbatim

e0
“Grain and straw yield response and total N uptake for spring barley, winter barley and oats, were almost identical irrespective of the previous N rate.”
✓ located verbatim in the source · abstract, characters 1036–1187

Title

Long continued applications of N fertilizer to cereals on sandy loam: grain and straw response to residual N

I.K. Thomsen; J. Djurhuus; B.T. Christensen Soil Use and Management 2003. doi:10.1111/j.1475-2743.2003.tb00280.x

Other claims from this paper (13)

Intervention effect Winter wheat with prior high N fertilization had more grain than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had more straw than with normal or reduced prior N.
Intervention effect Winter wheat with prior high N fertilization had higher total N uptake than with normal or reduced prior N.
Intervention effect Test-year N supply did not significantly affect winter wheat grain yield response.
Intervention effect Test-year N supply did not significantly affect winter wheat N uptake.
Intervention effect Prior N supply did not affect winter wheat in the second test year.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for spring barley.
Intervention effect Grain and straw yield response and total N uptake were almost identical across previous N rates for oats.
Intervention effect Soil soil C did not differ significantly among three long-term N fertilizer rates.
Intervention effect Soil N did not differ significantly among three long-term N fertilizer rates.
Intervention effect Oat plots with differing fertilizer history showed no significant difference in soil N mineralizing capacity.
Observation Overall N loss was lower by 189 to 466 kg N ha−1 at normal and high N rates than at the reduced rate.
Intervention effect Authors conclude fertilizer residues did not significantly affect soil N supply capacity or organic matter under continuous cereals.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N rates increased wheat grain yield.

Taxon: spring wheatTriticum aestivumt0
Treatment: N ratese1
Outcome: Grain yielde1
Direction: increasede1
Setting: eastern Québec (Canada)e3

Not reportedComparator

Verbatim

t0
“spring wheat growth and N uptake”
✓ located verbatim in the source · title, characters 48–80

e3
“in eastern Québec (Canada)”
✓ located verbatim in the source · abstract, characters 275–301

e1
“Grain yield was increased by N rates whereas composts alone at 90 kg total N ha –1 resulted in lower yields than the control in the first year on the sandy loam”
✓ located verbatim in the source · abstract, characters 739–899

Title

Effect of composts and inorganic fertilizers on spring wheat growth and N uptake

B. Gagnon; R. R. Simard; R. Robitaille; et al. Canadian Journal of Soil Science 1997. doi:10.4141/s96-093

Other claims from this paper (10)

Intervention effect Composts alone at 90 kg total N ha –1 gave lower yields than the control in the first year on the sandy loam.
Intervention effect Commercial composts gave higher yields than dairy manure composts.
Intervention effect Wheat showed no significant response to P and K fertilizers on either soil.
Intervention effect Compost rates had no effect on grain N content.
Association Commercial composts increased straw N by 36 to 63%.
Intervention effect Addition of IN to composts increased grain yield by 0.1 to 1.5 Mg ha −1, depending on soil and weather conditions.
Intervention effect Addition of IN to composts increased N uptake by 4 to 55 kg N ha −1.
Association Apparent recovery efficiency of added N was lower for composts (−14 to 15%) than for IN.
Association Apparent recovery efficiency of added N was higher for IN (24 to 56%) than for composts.
Recommendation In spring wheat production, composts should be considered more as organic matter amendments than as N fertilizers because of their limited N efficiency.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Spring nitrogen uptake on unfertilized plots approximated uptake at 40 pounds N.

Taxon: California Annual Grassland Speciest0
Treatment: unfertilized plotse0
Outcome: uptakee0
Direction: approximatede0
Comparator: plots receiving 40 pounds of Ne0

Verbatim

e0
“uptake on unfertilized plots during the spring approximated that on plots receiving 40 pounds of N”
✓ located verbatim in the source · abstract, characters 358–456

t0
“California Annual Grassland Species”
✓ located verbatim in the source · title, characters 62–97

Title

Yield, Percent Nitrogen, and Total Nitrogen Uptake of Various California Annual Grassland Species Fertilized with Increasing Rates of Nitrogen¹

Milton B. Jones Agronomy Journal 1963. doi:10.2134/agronj1963.00021962005500030014x

Other claims from this paper (5)

Intervention effect Near maximum yields occurred at 80 pounds N per acre.
Observation Carryover was measurable only at 160 pounds N.
Association Nonleguminous plant nitrogen percentage increased with nitrogen rate in the vegetative stage.
Intervention effect At maturity, nitrogen percentage at 40 pounds N was lower than the control.
Association Nitrogen uptake increased with nitrogen rate during winter.

“Spring total N uptake rates”

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