Search claims · PlantClaims

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Frankia sp. does not fix nitrogen symbiotically with F. paradoxa.

Taxon: F. paradoxaFallugia paradoxae0
Organ / stage: rootse0
Interactor: Frankia sp.Frankiae0symbiont
Outcome: fix nitrogen in symbiosise0

Verbatim

e0
“The Actinomycete, Frankia sp., can fix nitrogen in symbiosis with roots of C. mexicana but not with F. paradoxa.”
✓ located verbatim in the source · abstract, characters 277–389

Title

Micrografting between N-Fixing and Non-N-Fixing Genera of the Rosaceae

N. E. Kyle; J. L. Jakobek; R. A. Backhaus; et al. Botanical Gazette 1986. doi:10.1086/337590

Other claims from this paper (3)

Observation Fallugia paradoxa and Cowania mexicana formed successful micrografts.
Observation Vascular connections formed across the scion and rootstock graft union.
Observation Frankia sp. fixes nitrogen symbiotically with C. mexicana roots.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

Inoculum strains generally did not fix more nitrogen than average native isolates.

Taxon: Legumest0
Interactor: inoculum strainse0symbiont
Outcome: fix more N(2)e0
Direction: did not fix moree0
Comparator: average isolate from the soil populatione0

Verbatim

e0
“The inoculum strains generally did not fix more N(2) than the average isolate from the soil population in single-isolate tests”
✓ located verbatim in the source · abstract, characters 1289–1415

t0
“Legumes”
✓ located verbatim in the source · title, characters 24–31

Title

Inoculation Response of Legumes in Relation to the Number and Effectiveness of Indigenous Rhizobium Populations

P. W. Singleton; J. W. Tavares Applied and Environmental Microbiology 1986. doi:10.1128/aem.51.5.1013-1018.1986

Other claims from this paper (11)

Observation Inoculated plants had 76% of nodules formed by the inoculum strain.
Observation Native rhizobial populations varied from less than 6 x 10/g to 1 x 10/g soil.
Intervention effect Inoculation did not raise shoot nitrogen when native rhizobia counts were high unless ineffective.
Observation Native isolates varied widely in nitrogen fixation effectiveness.
Observation All populations included ineffective nitrogen fixing isolates.
Intervention effect Inoculation sometimes gave no response despite a superior inoculum symbiont.
Association Enhanced nitrogen fixation after inoculation related to greater nodule dry weight.
Intervention effect Inoculation generally increased nodule number below the native population threshold.
Intervention effect Inoculation did not increase nodule dry weight where native populations were effective.
Mechanism Most species compensated for fewer nodules by increasing nodule size and maintained dry weight.
Intervention effect Selected inoculum did not always enhance fixation above a native population threshold.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The large-seeded faba bean type did not fix more N than the small-seeded type in France.

Taxon: Faba beanVicia fabae0
Material: large‐seeded typee1
Outcome: %Ndfae1
Qualifier: but not in Francee1
Comparator: small‐seeded typee1
Setting: Francee1

Not reportedDirection

Verbatim

e0
“Faba bean obtained 9O%Ndfa in France, but only 69% in Syria”
✓ located verbatim in the source · abstract, characters 1454–1513

e1
“The large‐seeded type fixed higher N (74%Ndfa) than the small‐seeded type (64%) in Syria but not in France”
✓ located verbatim in the source · abstract, characters 1515–1621

Title

Dinitrogen Fixation and Nitrogen Balance in Cool‐Season Food Legumes

D. P. Beck; J. Wery; M. C. Saxena; et al. Agronomy Journal 1991. doi:10.2134/agronj1991.00021962008300020015x

Other claims from this paper (9)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

For almost all samples, rhizobia population size was not related to symbiotic N-fixing ability.

Taxon: white cloverTrifolium repenst0
Interactor: rhizobiae3symbiont
Outcome: ability of the population to fix Ne3
Direction: no relationshipe3
Qualifier: For almost all samplese3

Verbatim

e3
“For almost all samples, there was no relationship between rhizobia population size and ability of the population to fix N during legume symbiosis (SP)”
✓ located verbatim in the source · abstract, characters 779–929

t0
“population size and symbiotic performance of Rhizobium leguminosarum bv. trifolii with white clover in New Zealand pasture soils”
✓ located verbatim in the source · title, characters 26–154

Title

High spatial variation in population size and symbiotic performance of Rhizobium leguminosarum bv. trifolii with white clover in New Zealand pasture soils

Steven Wakelin; Guyléne Tillard; Robert van Ham; et al. PLoS ONE 2018. doi:10.1371/journal.pone.0192607

Other claims from this paper (6)

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Alternate row sowing did not significantly improve mean dry matter, mean legume dry matter or nitrogen fixation.

Taxon: annual legumee0
Treatment: Alternate row sowinge0
Outcome: mean DM, mean legume DM or N-fixe0
Direction: did not significantly improvee0

Not reportedComparator

Verbatim

e0
“Alternate row sowing improved seedling regeneration and annual legume seed reserves in some situations; however, it did not significantly improve mean DM, mean legume DM or N-fix.”
✓ located verbatim in the source · abstract, characters 912–1091

Title

Alternate row sowing: a novel approach to maintain sown species in mixed pasture swards

G. A. Sandral; Tony Swan; Guangdi Li; et al. Charles Sturt University Research Output (CRO) 2015

Other claims from this paper (5)

Intervention effect Alternate row sowing improved seedling regeneration in some situations.
Intervention effect Alternate row sowing improved annual legume seed reserves in some situations.
Intervention effect The choice of pasture species combinations affected establishment, dry matter and nitrogen fixation responses.
Intervention effect Including P. aquatica tended to increase mean pasture dry matter.
Recommendation Maintaining acceptable nitrogen fixation and mean legume dry matter with P. aquatica required M. sativa and Trifolium subterraneum inclusions, according to the authors.

Observationobservedoriginal resultno effectmeasured

Claim · model-written summary

The type of ineffective combination and effective germplasm traits did not alter relative dry matter distribution among organs.

Taxon: AlfalfaMedicago sativat0
Outcome: relative distribution of dry matter among plant organse0
Direction: Neithere0

Verbatim

e0
“Neither the type of Fix − combination nor traits in the Fix + germplasms supportive of increased N 2 fixation altered the relative distribution of dry matter among plant organs”
✓ located verbatim in the source · abstract, characters 1027–1203

t0
“Alfalfa”
✓ located verbatim in the source · title, characters 74–81

Title

Dry Matter, Nitrogen Distribution, and Dinitrogen Fixation in Contrasting Alfalfa Symbioses¹

K. A. Fishbeck; G. H. Heichel; C. P. Vance Crop Science 1987. doi:10.2135/cropsci1987.0011183x002700060023x

Other claims from this paper (6)

Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The amount of N fixed per plant did not differ significantly among the Frankia isolates in Casuarina species.

Taxon: CasuarinaCasuarinae3
Treatment: Frankia isolatese3
Interactor: FrankiaFrankiae3symbiont
Outcome: amount of N, fixed per plante3
Direction: no significant differencese3

Verbatim

e3
“There were no significant differences in plant dry weight, the N concentration of shoots or roots, or the amount of N, fixed per plant among the Frankia isolates for each of the species of Casuarina studied”
✓ located verbatim in the source · abstract, characters 534–740

Title

The abilities of three Frankia isolates to nodulate and fix nitrogen with four species of Casuarina

P. A. Rosbrook; G. D. Bowen Physiologia Plantarum 1987. doi:10.1111/j.1399-3054.1987.tb06158.x

Other claims from this paper (5)

Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The N concentration of shoots or roots did not differ significantly among the Frankia isolates in Casuarina species.

Taxon: CasuarinaCasuarinae3
Treatment: Frankia isolatese3
Interactor: FrankiaFrankiae3symbiont
Outcome: the N concentration of shoots or rootse3
Direction: no significant differencese3

Verbatim

e3
“There were no significant differences in plant dry weight, the N concentration of shoots or roots, or the amount of N, fixed per plant among the Frankia isolates for each of the species of Casuarina studied”
✓ located verbatim in the source · abstract, characters 534–740

Title

The abilities of three Frankia isolates to nodulate and fix nitrogen with four species of Casuarina

P. A. Rosbrook; G. D. Bowen Physiologia Plantarum 1987. doi:10.1111/j.1399-3054.1987.tb06158.x

Other claims from this paper (5)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

Infectivity and effectiveness in N fixation of Frankia strain JCT287 with C. cunninghamiana were similar in two different defined culture media.

Taxon: C. cunninghamianaCasuarina cunninghamianae4
Treatment: two different defined mediae4
Interactor: Frankia strain JCT287e4symbiont
Outcome: infectivity and effectiveness in N, fixatione4
Direction: similare4

Verbatim

e4
“The infectivity and effectiveness in N, fixation of Frankia strain JCT287 with C. cunninghamiana was similar when two different defined media were used for culture of the inoculum”
✓ located verbatim in the source · abstract, characters 742–921

Title

The abilities of three Frankia isolates to nodulate and fix nitrogen with four species of Casuarina

P. A. Rosbrook; G. D. Bowen Physiologia Plantarum 1987. doi:10.1111/j.1399-3054.1987.tb06158.x

Other claims from this paper (5)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At 66 kg nitrogen sunn hemp had no effect on sorghum yield.

Taxon: sorghumSorghume0
Treatment: SHe0
Outcome: sorghum yielde0
Direction: no effectse0

Not reportedComparator

Verbatim

e0
“At 66 kg N ha −1 , SH had no effects on sorghum yield, but it increased wheat yield in 2 of 3 yr”
✓ located verbatim in the source · abstract, characters 852–948

Title

Summer Cover Crops Fix Nitrogen, Increase Crop Yield, and Improve Soil–Crop Relationships

Humberto Blanco‐Canqui; M. M. Claassen; D. R. Presley Agronomy Journal 2012. doi:10.2134/agronj2011.0240

Other claims from this paper (9)

Intervention effect Summer cover crops increased crop yields, especially under low nitrogen.
Intervention effect Sunn hemp raised sorghum yield 1.18 to 1.54 times at zero nitrogen.
Intervention effect Sunn hemp raised wheat yield 1.60 times in the first year at zero nitrogen.
Intervention effect At 66 kg nitrogen sunn hemp increased wheat yield in two of three years.
Intervention effect Cover crops increased soil total nitrogen pool by 270 kg per hectare.
Association Yield increased as soil compactibility and temperature decreased.
Association Yield increased with soil aggregation, carbon, nitrogen and water.
Method / resource PCA selected soil compactibility and total nitrogen as best yield predictors.
Observation Summer legume cover crops in no till fixed nitrogen and improved soil crop relationships.

“fix N”

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